Add containers-common spec and command to podman

Since containers-common package is tied to specific versions
of Podman, add tools to build the package into the contrib directory
This should help other distributions to figure out which commont
package to ship.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

35 files changed, 1757 insertions, 374 deletions

diff --git a/vendor/github.com/prometheus/client_golang/prometheus/build_info.go b/vendor/github.com/prometheus/client_golang/prometheus/build_info.go
deleted file mode 100644
index 288f0e854..000000000
--- a/vendor/github.com/prometheus/client_golang/prometheus/build_info.go
+++ /dev/null
@@ -1,29 +0,0 @@
-// Copyright 2019 The Prometheus Authors
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// +build go1.12
-
-package prometheus
-
-import "runtime/debug"
-
-// readBuildInfo is a wrapper around debug.ReadBuildInfo for Go 1.12+.
-func readBuildInfo() (path, version, sum string) {
-	path, version, sum = "unknown", "unknown", "unknown"
-	if bi, ok := debug.ReadBuildInfo(); ok {
-		path = bi.Main.Path
-		version = bi.Main.Version
-		sum = bi.Main.Sum
-	}
-	return
-}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/counter.go b/vendor/github.com/prometheus/client_golang/prometheus/counter.go
index 0e1b48c03..3f8fd790d 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/counter.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/counter.go
@@ -163,7 +163,7 @@ func (c *counter) updateExemplar(v float64, l Labels) {
 // (e.g. number of HTTP requests, partitioned by response code and
 // method). Create instances with NewCounterVec.
 type CounterVec struct {
-	*metricVec
+	*MetricVec
 }
 
 // NewCounterVec creates a new CounterVec based on the provided CounterOpts and
@@ -176,11 +176,11 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
 		opts.ConstLabels,
 	)
 	return &CounterVec{
-		metricVec: newMetricVec(desc, func(lvs ...string) Metric {
+		MetricVec: NewMetricVec(desc, func(lvs ...string) Metric {
 			if len(lvs) != len(desc.variableLabels) {
 				panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, lvs))
 			}
-			result := &counter{desc: desc, labelPairs: makeLabelPairs(desc, lvs), now: time.Now}
+			result := &counter{desc: desc, labelPairs: MakeLabelPairs(desc, lvs), now: time.Now}
 			result.init(result) // Init self-collection.
 			return result
 		}),
@@ -188,7 +188,7 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
 }
 
 // GetMetricWithLabelValues returns the Counter for the given slice of label
-// values (same order as the VariableLabels in Desc). If that combination of
+// values (same order as the variable labels in Desc). If that combination of
 // label values is accessed for the first time, a new Counter is created.
 //
 // It is possible to call this method without using the returned Counter to only
@@ -202,7 +202,7 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
 // Counter with the same label values is created later.
 //
 // An error is returned if the number of label values is not the same as the
-// number of VariableLabels in Desc (minus any curried labels).
+// number of variable labels in Desc (minus any curried labels).
 //
 // Note that for more than one label value, this method is prone to mistakes
 // caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
@@ -211,7 +211,7 @@ func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
 // with a performance overhead (for creating and processing the Labels map).
 // See also the GaugeVec example.
 func (v *CounterVec) GetMetricWithLabelValues(lvs ...string) (Counter, error) {
-	metric, err := v.metricVec.getMetricWithLabelValues(lvs...)
+	metric, err := v.MetricVec.GetMetricWithLabelValues(lvs...)
 	if metric != nil {
 		return metric.(Counter), err
 	}
@@ -219,19 +219,19 @@ func (v *CounterVec) GetMetricWithLabelValues(lvs ...string) (Counter, error) {
 }
 
 // GetMetricWith returns the Counter for the given Labels map (the label names
-// must match those of the VariableLabels in Desc). If that label map is
+// must match those of the variable labels in Desc). If that label map is
 // accessed for the first time, a new Counter is created. Implications of
 // creating a Counter without using it and keeping the Counter for later use are
 // the same as for GetMetricWithLabelValues.
 //
 // An error is returned if the number and names of the Labels are inconsistent
-// with those of the VariableLabels in Desc (minus any curried labels).
+// with those of the variable labels in Desc (minus any curried labels).
 //
 // This method is used for the same purpose as
 // GetMetricWithLabelValues(...string). See there for pros and cons of the two
 // methods.
 func (v *CounterVec) GetMetricWith(labels Labels) (Counter, error) {
-	metric, err := v.metricVec.getMetricWith(labels)
+	metric, err := v.MetricVec.GetMetricWith(labels)
 	if metric != nil {
 		return metric.(Counter), err
 	}
@@ -275,7 +275,7 @@ func (v *CounterVec) With(labels Labels) Counter {
 // registered with a given registry (usually the uncurried version). The Reset
 // method deletes all metrics, even if called on a curried vector.
 func (v *CounterVec) CurryWith(labels Labels) (*CounterVec, error) {
-	vec, err := v.curryWith(labels)
+	vec, err := v.MetricVec.CurryWith(labels)
 	if vec != nil {
 		return &CounterVec{vec}, err
 	}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/desc.go b/vendor/github.com/prometheus/client_golang/prometheus/desc.go
index 2f19f5e1e..4bb816ab7 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/desc.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/desc.go
@@ -20,7 +20,7 @@ import (
 	"strings"
 
 	"github.com/cespare/xxhash/v2"
-	//lint:ignore SA1019 Need to keep deprecated package for compatibility.
+	//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
 	"github.com/golang/protobuf/proto"
 	"github.com/prometheus/common/model"
 
@@ -51,7 +51,7 @@ type Desc struct {
 	// constLabelPairs contains precalculated DTO label pairs based on
 	// the constant labels.
 	constLabelPairs []*dto.LabelPair
-	// VariableLabels contains names of labels for which the metric
+	// variableLabels contains names of labels for which the metric
 	// maintains variable values.
 	variableLabels []string
 	// id is a hash of the values of the ConstLabels and fqName. This
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector.go
index 18a99d5fa..c41ab37f3 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/expvar_collector.go
@@ -22,43 +22,10 @@ type expvarCollector struct {
 	exports map[string]*Desc
 }
 
-// NewExpvarCollector returns a newly allocated expvar Collector that still has
-// to be registered with a Prometheus registry.
+// NewExpvarCollector is the obsolete version of collectors.NewExpvarCollector.
+// See there for documentation.
 //
-// An expvar Collector collects metrics from the expvar interface. It provides a
-// quick way to expose numeric values that are already exported via expvar as
-// Prometheus metrics. Note that the data models of expvar and Prometheus are
-// fundamentally different, and that the expvar Collector is inherently slower
-// than native Prometheus metrics. Thus, the expvar Collector is probably great
-// for experiments and prototying, but you should seriously consider a more
-// direct implementation of Prometheus metrics for monitoring production
-// systems.
-//
-// The exports map has the following meaning:
-//
-// The keys in the map correspond to expvar keys, i.e. for every expvar key you
-// want to export as Prometheus metric, you need an entry in the exports
-// map. The descriptor mapped to each key describes how to export the expvar
-// value. It defines the name and the help string of the Prometheus metric
-// proxying the expvar value. The type will always be Untyped.
-//
-// For descriptors without variable labels, the expvar value must be a number or
-// a bool. The number is then directly exported as the Prometheus sample
-// value. (For a bool, 'false' translates to 0 and 'true' to 1). Expvar values
-// that are not numbers or bools are silently ignored.
-//
-// If the descriptor has one variable label, the expvar value must be an expvar
-// map. The keys in the expvar map become the various values of the one
-// Prometheus label. The values in the expvar map must be numbers or bools again
-// as above.
-//
-// For descriptors with more than one variable label, the expvar must be a
-// nested expvar map, i.e. where the values of the topmost map are maps again
-// etc. until a depth is reached that corresponds to the number of labels. The
-// leaves of that structure must be numbers or bools as above to serve as the
-// sample values.
-//
-// Anything that does not fit into the scheme above is silently ignored.
+// Deprecated: Use collectors.NewExpvarCollector instead.
 func NewExpvarCollector(exports map[string]*Desc) Collector {
 	return &expvarCollector{
 		exports: exports,
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/gauge.go b/vendor/github.com/prometheus/client_golang/prometheus/gauge.go
index d67573f76..bd0733d6a 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/gauge.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/gauge.go
@@ -132,7 +132,7 @@ func (g *gauge) Write(out *dto.Metric) error {
 // (e.g. number of operations queued, partitioned by user and operation
 // type). Create instances with NewGaugeVec.
 type GaugeVec struct {
-	*metricVec
+	*MetricVec
 }
 
 // NewGaugeVec creates a new GaugeVec based on the provided GaugeOpts and
@@ -145,11 +145,11 @@ func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec {
 		opts.ConstLabels,
 	)
 	return &GaugeVec{
-		metricVec: newMetricVec(desc, func(lvs ...string) Metric {
+		MetricVec: NewMetricVec(desc, func(lvs ...string) Metric {
 			if len(lvs) != len(desc.variableLabels) {
 				panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, lvs))
 			}
-			result := &gauge{desc: desc, labelPairs: makeLabelPairs(desc, lvs)}
+			result := &gauge{desc: desc, labelPairs: MakeLabelPairs(desc, lvs)}
 			result.init(result) // Init self-collection.
 			return result
 		}),
@@ -157,7 +157,7 @@ func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec {
 }
 
 // GetMetricWithLabelValues returns the Gauge for the given slice of label
-// values (same order as the VariableLabels in Desc). If that combination of
+// values (same order as the variable labels in Desc). If that combination of
 // label values is accessed for the first time, a new Gauge is created.
 //
 // It is possible to call this method without using the returned Gauge to only
@@ -172,7 +172,7 @@ func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec {
 // example.
 //
 // An error is returned if the number of label values is not the same as the
-// number of VariableLabels in Desc (minus any curried labels).
+// number of variable labels in Desc (minus any curried labels).
 //
 // Note that for more than one label value, this method is prone to mistakes
 // caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
@@ -180,7 +180,7 @@ func NewGaugeVec(opts GaugeOpts, labelNames []string) *GaugeVec {
 // latter has a much more readable (albeit more verbose) syntax, but it comes
 // with a performance overhead (for creating and processing the Labels map).
 func (v *GaugeVec) GetMetricWithLabelValues(lvs ...string) (Gauge, error) {
-	metric, err := v.metricVec.getMetricWithLabelValues(lvs...)
+	metric, err := v.MetricVec.GetMetricWithLabelValues(lvs...)
 	if metric != nil {
 		return metric.(Gauge), err
 	}
@@ -188,19 +188,19 @@ func (v *GaugeVec) GetMetricWithLabelValues(lvs ...string) (Gauge, error) {
 }
 
 // GetMetricWith returns the Gauge for the given Labels map (the label names
-// must match those of the VariableLabels in Desc). If that label map is
+// must match those of the variable labels in Desc). If that label map is
 // accessed for the first time, a new Gauge is created. Implications of
 // creating a Gauge without using it and keeping the Gauge for later use are
 // the same as for GetMetricWithLabelValues.
 //
 // An error is returned if the number and names of the Labels are inconsistent
-// with those of the VariableLabels in Desc (minus any curried labels).
+// with those of the variable labels in Desc (minus any curried labels).
 //
 // This method is used for the same purpose as
 // GetMetricWithLabelValues(...string). See there for pros and cons of the two
 // methods.
 func (v *GaugeVec) GetMetricWith(labels Labels) (Gauge, error) {
-	metric, err := v.metricVec.getMetricWith(labels)
+	metric, err := v.MetricVec.GetMetricWith(labels)
 	if metric != nil {
 		return metric.(Gauge), err
 	}
@@ -244,7 +244,7 @@ func (v *GaugeVec) With(labels Labels) Gauge {
 // registered with a given registry (usually the uncurried version). The Reset
 // method deletes all metrics, even if called on a curried vector.
 func (v *GaugeVec) CurryWith(labels Labels) (*GaugeVec, error) {
-	vec, err := v.curryWith(labels)
+	vec, err := v.MetricVec.CurryWith(labels)
 	if vec != nil {
 		return &GaugeVec{vec}, err
 	}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go
index ea05cf429..a96ed1cee 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/go_collector.go
@@ -36,31 +36,10 @@ type goCollector struct {
 	msMaxAge        time.Duration           // Maximum allowed age of old memstats.
 }
 
-// NewGoCollector returns a collector that exports metrics about the current Go
-// process. This includes memory stats. To collect those, runtime.ReadMemStats
-// is called. This requires to “stop the world”, which usually only happens for
-// garbage collection (GC). Take the following implications into account when
-// deciding whether to use the Go collector:
+// NewGoCollector is the obsolete version of collectors.NewGoCollector.
+// See there for documentation.
 //
-// 1. The performance impact of stopping the world is the more relevant the more
-// frequently metrics are collected. However, with Go1.9 or later the
-// stop-the-world time per metrics collection is very short (~25µs) so that the
-// performance impact will only matter in rare cases. However, with older Go
-// versions, the stop-the-world duration depends on the heap size and can be
-// quite significant (~1.7 ms/GiB as per
-// https://go-review.googlesource.com/c/go/+/34937).
-//
-// 2. During an ongoing GC, nothing else can stop the world. Therefore, if the
-// metrics collection happens to coincide with GC, it will only complete after
-// GC has finished. Usually, GC is fast enough to not cause problems. However,
-// with a very large heap, GC might take multiple seconds, which is enough to
-// cause scrape timeouts in common setups. To avoid this problem, the Go
-// collector will use the memstats from a previous collection if
-// runtime.ReadMemStats takes more than 1s. However, if there are no previously
-// collected memstats, or their collection is more than 5m ago, the collection
-// will block until runtime.ReadMemStats succeeds. (The problem might be solved
-// in Go1.13, see https://github.com/golang/go/issues/19812 for the related Go
-// issue.)
+// Deprecated: Use collectors.NewGoCollector instead.
 func NewGoCollector() Collector {
 	return &goCollector{
 		goroutinesDesc: NewDesc(
@@ -365,25 +344,17 @@ type memStatsMetrics []struct {
 	valType ValueType
 }
 
-// NewBuildInfoCollector returns a collector collecting a single metric
-// "go_build_info" with the constant value 1 and three labels "path", "version",
-// and "checksum". Their label values contain the main module path, version, and
-// checksum, respectively. The labels will only have meaningful values if the
-// binary is built with Go module support and from source code retrieved from
-// the source repository (rather than the local file system). This is usually
-// accomplished by building from outside of GOPATH, specifying the full address
-// of the main package, e.g. "GO111MODULE=on go run
-// github.com/prometheus/client_golang/examples/random". If built without Go
-// module support, all label values will be "unknown". If built with Go module
-// support but using the source code from the local file system, the "path" will
-// be set appropriately, but "checksum" will be empty and "version" will be
-// "(devel)".
+// NewBuildInfoCollector is the obsolete version of collectors.NewBuildInfoCollector.
+// See there for documentation.
 //
-// This collector uses only the build information for the main module. See
-// https://github.com/povilasv/prommod for an example of a collector for the
-// module dependencies.
+// Deprecated: Use collectors.NewBuildInfoCollector instead.
 func NewBuildInfoCollector() Collector {
-	path, version, sum := readBuildInfo()
+	path, version, sum := "unknown", "unknown", "unknown"
+	if bi, ok := debug.ReadBuildInfo(); ok {
+		path = bi.Main.Path
+		version = bi.Main.Version
+		sum = bi.Main.Sum
+	}
 	c := &selfCollector{MustNewConstMetric(
 		NewDesc(
 			"go_build_info",
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go
index d4ea301a3..8425640b3 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/histogram.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/histogram.go
@@ -22,7 +22,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	//lint:ignore SA1019 Need to keep deprecated package for compatibility.
+	//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
 	"github.com/golang/protobuf/proto"
 
 	dto "github.com/prometheus/client_model/go"
@@ -47,7 +47,12 @@ type Histogram interface {
 	Metric
 	Collector
 
-	// Observe adds a single observation to the histogram.
+	// Observe adds a single observation to the histogram. Observations are
+	// usually positive or zero. Negative observations are accepted but
+	// prevent current versions of Prometheus from properly detecting
+	// counter resets in the sum of observations. See
+	// https://prometheus.io/docs/practices/histograms/#count-and-sum-of-observations
+	// for details.
 	Observe(float64)
 }
 
@@ -192,7 +197,7 @@ func newHistogram(desc *Desc, opts HistogramOpts, labelValues ...string) Histogr
 	h := &histogram{
 		desc:        desc,
 		upperBounds: opts.Buckets,
-		labelPairs:  makeLabelPairs(desc, labelValues),
+		labelPairs:  MakeLabelPairs(desc, labelValues),
 		counts:      [2]*histogramCounts{{}, {}},
 		now:         time.Now,
 	}
@@ -409,7 +414,7 @@ func (h *histogram) updateExemplar(v float64, bucket int, l Labels) {
 // (e.g. HTTP request latencies, partitioned by status code and method). Create
 // instances with NewHistogramVec.
 type HistogramVec struct {
-	*metricVec
+	*MetricVec
 }
 
 // NewHistogramVec creates a new HistogramVec based on the provided HistogramOpts and
@@ -422,14 +427,14 @@ func NewHistogramVec(opts HistogramOpts, labelNames []string) *HistogramVec {
 		opts.ConstLabels,
 	)
 	return &HistogramVec{
-		metricVec: newMetricVec(desc, func(lvs ...string) Metric {
+		MetricVec: NewMetricVec(desc, func(lvs ...string) Metric {
 			return newHistogram(desc, opts, lvs...)
 		}),
 	}
 }
 
 // GetMetricWithLabelValues returns the Histogram for the given slice of label
-// values (same order as the VariableLabels in Desc). If that combination of
+// values (same order as the variable labels in Desc). If that combination of
 // label values is accessed for the first time, a new Histogram is created.
 //
 // It is possible to call this method without using the returned Histogram to only
@@ -444,7 +449,7 @@ func NewHistogramVec(opts HistogramOpts, labelNames []string) *HistogramVec {
 // example.
 //
 // An error is returned if the number of label values is not the same as the
-// number of VariableLabels in Desc (minus any curried labels).
+// number of variable labels in Desc (minus any curried labels).
 //
 // Note that for more than one label value, this method is prone to mistakes
 // caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
@@ -453,7 +458,7 @@ func NewHistogramVec(opts HistogramOpts, labelNames []string) *HistogramVec {
 // with a performance overhead (for creating and processing the Labels map).
 // See also the GaugeVec example.
 func (v *HistogramVec) GetMetricWithLabelValues(lvs ...string) (Observer, error) {
-	metric, err := v.metricVec.getMetricWithLabelValues(lvs...)
+	metric, err := v.MetricVec.GetMetricWithLabelValues(lvs...)
 	if metric != nil {
 		return metric.(Observer), err
 	}
@@ -461,19 +466,19 @@ func (v *HistogramVec) GetMetricWithLabelValues(lvs ...string) (Observer, error)
 }
 
 // GetMetricWith returns the Histogram for the given Labels map (the label names
-// must match those of the VariableLabels in Desc). If that label map is
+// must match those of the variable labels in Desc). If that label map is
 // accessed for the first time, a new Histogram is created. Implications of
 // creating a Histogram without using it and keeping the Histogram for later use
 // are the same as for GetMetricWithLabelValues.
 //
 // An error is returned if the number and names of the Labels are inconsistent
-// with those of the VariableLabels in Desc (minus any curried labels).
+// with those of the variable labels in Desc (minus any curried labels).
 //
 // This method is used for the same purpose as
 // GetMetricWithLabelValues(...string). See there for pros and cons of the two
 // methods.
 func (v *HistogramVec) GetMetricWith(labels Labels) (Observer, error) {
-	metric, err := v.metricVec.getMetricWith(labels)
+	metric, err := v.MetricVec.GetMetricWith(labels)
 	if metric != nil {
 		return metric.(Observer), err
 	}
@@ -517,7 +522,7 @@ func (v *HistogramVec) With(labels Labels) Observer {
 // registered with a given registry (usually the uncurried version). The Reset
 // method deletes all metrics, even if called on a curried vector.
 func (v *HistogramVec) CurryWith(labels Labels) (ObserverVec, error) {
-	vec, err := v.curryWith(labels)
+	vec, err := v.MetricVec.CurryWith(labels)
 	if vec != nil {
 		return &HistogramVec{vec}, err
 	}
@@ -602,7 +607,7 @@ func NewConstHistogram(
 		count:      count,
 		sum:        sum,
 		buckets:    buckets,
-		labelPairs: makeLabelPairs(desc, labelValues),
+		labelPairs: MakeLabelPairs(desc, labelValues),
 	}, nil
 }
 
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/metric.go b/vendor/github.com/prometheus/client_golang/prometheus/metric.go
index 35bd8bde3..dc121910a 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/metric.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/metric.go
@@ -17,7 +17,7 @@ import (
 	"strings"
 	"time"
 
-	//lint:ignore SA1019 Need to keep deprecated package for compatibility.
+	//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
 	"github.com/golang/protobuf/proto"
 	"github.com/prometheus/common/model"
 
@@ -58,7 +58,7 @@ type Metric interface {
 }
 
 // Opts bundles the options for creating most Metric types. Each metric
-// implementation XXX has its own XXXOpts type, but in most cases, it is just be
+// implementation XXX has its own XXXOpts type, but in most cases, it is just
 // an alias of this type (which might change when the requirement arises.)
 //
 // It is mandatory to set Name to a non-empty string. All other fields are
@@ -89,7 +89,7 @@ type Opts struct {
 	// better covered by target labels set by the scraping Prometheus
 	// server, or by one specific metric (e.g. a build_info or a
 	// machine_role metric). See also
-	// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels,-not-static-scraped-labels
+	// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels-not-static-scraped-labels
 	ConstLabels Labels
 }
 
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go
index 9b8097942..5bfe0ff5b 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/process_collector.go
@@ -15,7 +15,11 @@ package prometheus
 
 import (
 	"errors"
+	"fmt"
+	"io/ioutil"
 	"os"
+	"strconv"
+	"strings"
 )
 
 type processCollector struct {
@@ -50,16 +54,10 @@ type ProcessCollectorOpts struct {
 	ReportErrors bool
 }
 
-// NewProcessCollector returns a collector which exports the current state of
-// process metrics including CPU, memory and file descriptor usage as well as
-// the process start time. The detailed behavior is defined by the provided
-// ProcessCollectorOpts. The zero value of ProcessCollectorOpts creates a
-// collector for the current process with an empty namespace string and no error
-// reporting.
+// NewProcessCollector is the obsolete version of collectors.NewProcessCollector.
+// See there for documentation.
 //
-// The collector only works on operating systems with a Linux-style proc
-// filesystem and on Microsoft Windows. On other operating systems, it will not
-// collect any metrics.
+// Deprecated: Use collectors.NewProcessCollector instead.
 func NewProcessCollector(opts ProcessCollectorOpts) Collector {
 	ns := ""
 	if len(opts.Namespace) > 0 {
@@ -149,3 +147,20 @@ func (c *processCollector) reportError(ch chan<- Metric, desc *Desc, err error)
 	}
 	ch <- NewInvalidMetric(desc, err)
 }
+
+// NewPidFileFn returns a function that retrieves a pid from the specified file.
+// It is meant to be used for the PidFn field in ProcessCollectorOpts.
+func NewPidFileFn(pidFilePath string) func() (int, error) {
+	return func() (int, error) {
+		content, err := ioutil.ReadFile(pidFilePath)
+		if err != nil {
+			return 0, fmt.Errorf("can't read pid file %q: %+v", pidFilePath, err)
+		}
+		pid, err := strconv.Atoi(strings.TrimSpace(string(content)))
+		if err != nil {
+			return 0, fmt.Errorf("can't parse pid file %q: %+v", pidFilePath, err)
+		}
+
+		return pid, nil
+	}
+}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go
index 5070e72e2..e7c0d0546 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/delegator.go
@@ -83,8 +83,7 @@ type readerFromDelegator struct{ *responseWriterDelegator }
 type pusherDelegator struct{ *responseWriterDelegator }
 
 func (d closeNotifierDelegator) CloseNotify() <-chan bool {
-	//lint:ignore SA1019 http.CloseNotifier is deprecated but we don't want to
-	//remove support from client_golang yet.
+	//nolint:staticcheck // Ignore SA1019. http.CloseNotifier is deprecated but we keep it here to not break existing users.
 	return d.ResponseWriter.(http.CloseNotifier).CloseNotify()
 }
 func (d flusherDelegator) Flush() {
@@ -348,8 +347,7 @@ func newDelegator(w http.ResponseWriter, observeWriteHeaderFunc func(int)) deleg
 	}
 
 	id := 0
-	//lint:ignore SA1019 http.CloseNotifier is deprecated but we don't want to
-	//remove support from client_golang yet.
+	//nolint:staticcheck // Ignore SA1019. http.CloseNotifier is deprecated but we keep it here to not break existing users.
 	if _, ok := w.(http.CloseNotifier); ok {
 		id += closeNotifier
 	}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
index 5e1c4546c..d86d0cf4b 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/http.go
@@ -99,7 +99,7 @@ func HandlerFor(reg prometheus.Gatherer, opts HandlerOpts) http.Handler {
 		inFlightSem = make(chan struct{}, opts.MaxRequestsInFlight)
 	}
 	if opts.Registry != nil {
-		// Initialize all possibilites that can occur below.
+		// Initialize all possibilities that can occur below.
 		errCnt.WithLabelValues("gathering")
 		errCnt.WithLabelValues("encoding")
 		if err := opts.Registry.Register(errCnt); err != nil {
@@ -303,8 +303,12 @@ type Logger interface {
 // HandlerOpts specifies options how to serve metrics via an http.Handler. The
 // zero value of HandlerOpts is a reasonable default.
 type HandlerOpts struct {
-	// ErrorLog specifies an optional logger for errors collecting and
-	// serving metrics. If nil, errors are not logged at all.
+	// ErrorLog specifies an optional Logger for errors collecting and
+	// serving metrics. If nil, errors are not logged at all. Note that the
+	// type of a reported error is often prometheus.MultiError, which
+	// formats into a multi-line error string. If you want to avoid the
+	// latter, create a Logger implementation that detects a
+	// prometheus.MultiError and formats the contained errors into one line.
 	ErrorLog Logger
 	// ErrorHandling defines how errors are handled. Note that errors are
 	// logged regardless of the configured ErrorHandling provided ErrorLog
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_server.go b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_server.go
index 9db243805..ab037db86 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_server.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/promhttp/instrument_server.go
@@ -43,14 +43,14 @@ func InstrumentHandlerInFlight(g prometheus.Gauge, next http.Handler) http.Handl
 
 // InstrumentHandlerDuration is a middleware that wraps the provided
 // http.Handler to observe the request duration with the provided ObserverVec.
-// The ObserverVec must have zero, one, or two non-const non-curried labels. For
-// those, the only allowed label names are "code" and "method". The function
-// panics otherwise. The Observe method of the Observer in the ObserverVec is
-// called with the request duration in seconds. Partitioning happens by HTTP
-// status code and/or HTTP method if the respective instance label names are
-// present in the ObserverVec. For unpartitioned observations, use an
-// ObserverVec with zero labels. Note that partitioning of Histograms is
-// expensive and should be used judiciously.
+// The ObserverVec must have valid metric and label names and must have zero,
+// one, or two non-const non-curried labels. For those, the only allowed label
+// names are "code" and "method". The function panics otherwise. The Observe
+// method of the Observer in the ObserverVec is called with the request duration
+// in seconds. Partitioning happens by HTTP status code and/or HTTP method if
+// the respective instance label names are present in the ObserverVec. For
+// unpartitioned observations, use an ObserverVec with zero labels. Note that
+// partitioning of Histograms is expensive and should be used judiciously.
 //
 // If the wrapped Handler does not set a status code, a status code of 200 is assumed.
 //
@@ -79,12 +79,13 @@ func InstrumentHandlerDuration(obs prometheus.ObserverVec, next http.Handler) ht
 }
 
 // InstrumentHandlerCounter is a middleware that wraps the provided http.Handler
-// to observe the request result with the provided CounterVec.  The CounterVec
-// must have zero, one, or two non-const non-curried labels. For those, the only
-// allowed label names are "code" and "method". The function panics
-// otherwise. Partitioning of the CounterVec happens by HTTP status code and/or
-// HTTP method if the respective instance label names are present in the
-// CounterVec. For unpartitioned counting, use a CounterVec with zero labels.
+// to observe the request result with the provided CounterVec. The CounterVec
+// must have valid metric and label names and must have zero, one, or two
+// non-const non-curried labels. For those, the only allowed label names are
+// "code" and "method". The function panics otherwise. Partitioning of the
+// CounterVec happens by HTTP status code and/or HTTP method if the respective
+// instance label names are present in the CounterVec. For unpartitioned
+// counting, use a CounterVec with zero labels.
 //
 // If the wrapped Handler does not set a status code, a status code of 200 is assumed.
 //
@@ -110,14 +111,15 @@ func InstrumentHandlerCounter(counter *prometheus.CounterVec, next http.Handler)
 
 // InstrumentHandlerTimeToWriteHeader is a middleware that wraps the provided
 // http.Handler to observe with the provided ObserverVec the request duration
-// until the response headers are written. The ObserverVec must have zero, one,
-// or two non-const non-curried labels. For those, the only allowed label names
-// are "code" and "method". The function panics otherwise. The Observe method of
-// the Observer in the ObserverVec is called with the request duration in
-// seconds. Partitioning happens by HTTP status code and/or HTTP method if the
-// respective instance label names are present in the ObserverVec. For
-// unpartitioned observations, use an ObserverVec with zero labels. Note that
-// partitioning of Histograms is expensive and should be used judiciously.
+// until the response headers are written. The ObserverVec must have valid
+// metric and label names and must have zero, one, or two non-const non-curried
+// labels. For those, the only allowed label names are "code" and "method". The
+// function panics otherwise. The Observe method of the Observer in the
+// ObserverVec is called with the request duration in seconds. Partitioning
+// happens by HTTP status code and/or HTTP method if the respective instance
+// label names are present in the ObserverVec. For unpartitioned observations,
+// use an ObserverVec with zero labels. Note that partitioning of Histograms is
+// expensive and should be used judiciously.
 //
 // If the wrapped Handler panics before calling WriteHeader, no value is
 // reported.
@@ -139,15 +141,15 @@ func InstrumentHandlerTimeToWriteHeader(obs prometheus.ObserverVec, next http.Ha
 }
 
 // InstrumentHandlerRequestSize is a middleware that wraps the provided
-// http.Handler to observe the request size with the provided ObserverVec.  The
-// ObserverVec must have zero, one, or two non-const non-curried labels. For
-// those, the only allowed label names are "code" and "method". The function
-// panics otherwise. The Observe method of the Observer in the ObserverVec is
-// called with the request size in bytes. Partitioning happens by HTTP status
-// code and/or HTTP method if the respective instance label names are present in
-// the ObserverVec. For unpartitioned observations, use an ObserverVec with zero
-// labels. Note that partitioning of Histograms is expensive and should be used
-// judiciously.
+// http.Handler to observe the request size with the provided ObserverVec. The
+// ObserverVec must have valid metric and label names and must have zero, one,
+// or two non-const non-curried labels. For those, the only allowed label names
+// are "code" and "method". The function panics otherwise. The Observe method of
+// the Observer in the ObserverVec is called with the request size in
+// bytes. Partitioning happens by HTTP status code and/or HTTP method if the
+// respective instance label names are present in the ObserverVec. For
+// unpartitioned observations, use an ObserverVec with zero labels. Note that
+// partitioning of Histograms is expensive and should be used judiciously.
 //
 // If the wrapped Handler does not set a status code, a status code of 200 is assumed.
 //
@@ -174,15 +176,15 @@ func InstrumentHandlerRequestSize(obs prometheus.ObserverVec, next http.Handler)
 }
 
 // InstrumentHandlerResponseSize is a middleware that wraps the provided
-// http.Handler to observe the response size with the provided ObserverVec.  The
-// ObserverVec must have zero, one, or two non-const non-curried labels. For
-// those, the only allowed label names are "code" and "method". The function
-// panics otherwise. The Observe method of the Observer in the ObserverVec is
-// called with the response size in bytes. Partitioning happens by HTTP status
-// code and/or HTTP method if the respective instance label names are present in
-// the ObserverVec. For unpartitioned observations, use an ObserverVec with zero
-// labels. Note that partitioning of Histograms is expensive and should be used
-// judiciously.
+// http.Handler to observe the response size with the provided ObserverVec. The
+// ObserverVec must have valid metric and label names and must have zero, one,
+// or two non-const non-curried labels. For those, the only allowed label names
+// are "code" and "method". The function panics otherwise. The Observe method of
+// the Observer in the ObserverVec is called with the response size in
+// bytes. Partitioning happens by HTTP status code and/or HTTP method if the
+// respective instance label names are present in the ObserverVec. For
+// unpartitioned observations, use an ObserverVec with zero labels. Note that
+// partitioning of Histograms is expensive and should be used judiciously.
 //
 // If the wrapped Handler does not set a status code, a status code of 200 is assumed.
 //
@@ -198,6 +200,11 @@ func InstrumentHandlerResponseSize(obs prometheus.ObserverVec, next http.Handler
 	})
 }
 
+// checkLabels returns whether the provided Collector has a non-const,
+// non-curried label named "code" and/or "method". It panics if the provided
+// Collector does not have a Desc or has more than one Desc or its Desc is
+// invalid. It also panics if the Collector has any non-const, non-curried
+// labels that are not named "code" or "method".
 func checkLabels(c prometheus.Collector) (code bool, method bool) {
 	// TODO(beorn7): Remove this hacky way to check for instance labels
 	// once Descriptors can have their dimensionality queried.
@@ -225,6 +232,10 @@ func checkLabels(c prometheus.Collector) (code bool, method bool) {
 
 	close(descc)
 
+	// Make sure the Collector has a valid Desc by registering it with a
+	// temporary registry.
+	prometheus.NewRegistry().MustRegister(c)
+
 	// Create a ConstMetric with the Desc. Since we don't know how many
 	// variable labels there are, try for as long as it needs.
 	for err := errors.New("dummy"); err != nil; lvs = append(lvs, magicString) {
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/registry.go b/vendor/github.com/prometheus/client_golang/prometheus/registry.go
index ba94405af..383a7f594 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/registry.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/registry.go
@@ -26,7 +26,7 @@ import (
 	"unicode/utf8"
 
 	"github.com/cespare/xxhash/v2"
-	//lint:ignore SA1019 Need to keep deprecated package for compatibility.
+	//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
 	"github.com/golang/protobuf/proto"
 	"github.com/prometheus/common/expfmt"
 
@@ -215,6 +215,8 @@ func (err AlreadyRegisteredError) Error() string {
 // by a Gatherer to report multiple errors during MetricFamily gathering.
 type MultiError []error
 
+// Error formats the contained errors as a bullet point list, preceded by the
+// total number of errors. Note that this results in a multi-line string.
 func (errs MultiError) Error() string {
 	if len(errs) == 0 {
 		return ""
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/summary.go b/vendor/github.com/prometheus/client_golang/prometheus/summary.go
index f3c1440d1..c5fa8ed7c 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/summary.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/summary.go
@@ -23,7 +23,7 @@ import (
 	"time"
 
 	"github.com/beorn7/perks/quantile"
-	//lint:ignore SA1019 Need to keep deprecated package for compatibility.
+	//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
 	"github.com/golang/protobuf/proto"
 
 	dto "github.com/prometheus/client_model/go"
@@ -55,7 +55,12 @@ type Summary interface {
 	Metric
 	Collector
 
-	// Observe adds a single observation to the summary.
+	// Observe adds a single observation to the summary. Observations are
+	// usually positive or zero. Negative observations are accepted but
+	// prevent current versions of Prometheus from properly detecting
+	// counter resets in the sum of observations. See
+	// https://prometheus.io/docs/practices/histograms/#count-and-sum-of-observations
+	// for details.
 	Observe(float64)
 }
 
@@ -110,7 +115,7 @@ type SummaryOpts struct {
 	// better covered by target labels set by the scraping Prometheus
 	// server, or by one specific metric (e.g. a build_info or a
 	// machine_role metric). See also
-	// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels,-not-static-scraped-labels
+	// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels-not-static-scraped-labels
 	ConstLabels Labels
 
 	// Objectives defines the quantile rank estimates with their respective
@@ -121,7 +126,9 @@ type SummaryOpts struct {
 	Objectives map[float64]float64
 
 	// MaxAge defines the duration for which an observation stays relevant
-	// for the summary. Must be positive. The default value is DefMaxAge.
+	// for the summary. Only applies to pre-calculated quantiles, does not
+	// apply to _sum and _count. Must be positive. The default value is
+	// DefMaxAge.
 	MaxAge time.Duration
 
 	// AgeBuckets is the number of buckets used to exclude observations that
@@ -208,7 +215,7 @@ func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary {
 		// Use the lock-free implementation of a Summary without objectives.
 		s := &noObjectivesSummary{
 			desc:       desc,
-			labelPairs: makeLabelPairs(desc, labelValues),
+			labelPairs: MakeLabelPairs(desc, labelValues),
 			counts:     [2]*summaryCounts{{}, {}},
 		}
 		s.init(s) // Init self-collection.
@@ -221,7 +228,7 @@ func newSummary(desc *Desc, opts SummaryOpts, labelValues ...string) Summary {
 		objectives:       opts.Objectives,
 		sortedObjectives: make([]float64, 0, len(opts.Objectives)),
 
-		labelPairs: makeLabelPairs(desc, labelValues),
+		labelPairs: MakeLabelPairs(desc, labelValues),
 
 		hotBuf:         make([]float64, 0, opts.BufCap),
 		coldBuf:        make([]float64, 0, opts.BufCap),
@@ -513,7 +520,7 @@ func (s quantSort) Less(i, j int) bool {
 // (e.g. HTTP request latencies, partitioned by status code and method). Create
 // instances with NewSummaryVec.
 type SummaryVec struct {
-	*metricVec
+	*MetricVec
 }
 
 // NewSummaryVec creates a new SummaryVec based on the provided SummaryOpts and
@@ -535,14 +542,14 @@ func NewSummaryVec(opts SummaryOpts, labelNames []string) *SummaryVec {
 		opts.ConstLabels,
 	)
 	return &SummaryVec{
-		metricVec: newMetricVec(desc, func(lvs ...string) Metric {
+		MetricVec: NewMetricVec(desc, func(lvs ...string) Metric {
 			return newSummary(desc, opts, lvs...)
 		}),
 	}
 }
 
 // GetMetricWithLabelValues returns the Summary for the given slice of label
-// values (same order as the VariableLabels in Desc). If that combination of
+// values (same order as the variable labels in Desc). If that combination of
 // label values is accessed for the first time, a new Summary is created.
 //
 // It is possible to call this method without using the returned Summary to only
@@ -557,7 +564,7 @@ func NewSummaryVec(opts SummaryOpts, labelNames []string) *SummaryVec {
 // example.
 //
 // An error is returned if the number of label values is not the same as the
-// number of VariableLabels in Desc (minus any curried labels).
+// number of variable labels in Desc (minus any curried labels).
 //
 // Note that for more than one label value, this method is prone to mistakes
 // caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
@@ -566,7 +573,7 @@ func NewSummaryVec(opts SummaryOpts, labelNames []string) *SummaryVec {
 // with a performance overhead (for creating and processing the Labels map).
 // See also the GaugeVec example.
 func (v *SummaryVec) GetMetricWithLabelValues(lvs ...string) (Observer, error) {
-	metric, err := v.metricVec.getMetricWithLabelValues(lvs...)
+	metric, err := v.MetricVec.GetMetricWithLabelValues(lvs...)
 	if metric != nil {
 		return metric.(Observer), err
 	}
@@ -574,19 +581,19 @@ func (v *SummaryVec) GetMetricWithLabelValues(lvs ...string) (Observer, error) {
 }
 
 // GetMetricWith returns the Summary for the given Labels map (the label names
-// must match those of the VariableLabels in Desc). If that label map is
+// must match those of the variable labels in Desc). If that label map is
 // accessed for the first time, a new Summary is created. Implications of
 // creating a Summary without using it and keeping the Summary for later use are
 // the same as for GetMetricWithLabelValues.
 //
 // An error is returned if the number and names of the Labels are inconsistent
-// with those of the VariableLabels in Desc (minus any curried labels).
+// with those of the variable labels in Desc (minus any curried labels).
 //
 // This method is used for the same purpose as
 // GetMetricWithLabelValues(...string). See there for pros and cons of the two
 // methods.
 func (v *SummaryVec) GetMetricWith(labels Labels) (Observer, error) {
-	metric, err := v.metricVec.getMetricWith(labels)
+	metric, err := v.MetricVec.GetMetricWith(labels)
 	if metric != nil {
 		return metric.(Observer), err
 	}
@@ -630,7 +637,7 @@ func (v *SummaryVec) With(labels Labels) Observer {
 // registered with a given registry (usually the uncurried version). The Reset
 // method deletes all metrics, even if called on a curried vector.
 func (v *SummaryVec) CurryWith(labels Labels) (ObserverVec, error) {
-	vec, err := v.curryWith(labels)
+	vec, err := v.MetricVec.CurryWith(labels)
 	if vec != nil {
 		return &SummaryVec{vec}, err
 	}
@@ -716,7 +723,7 @@ func NewConstSummary(
 		count:      count,
 		sum:        sum,
 		quantiles:  quantiles,
-		labelPairs: makeLabelPairs(desc, labelValues),
+		labelPairs: MakeLabelPairs(desc, labelValues),
 	}, nil
 }
 
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/value.go b/vendor/github.com/prometheus/client_golang/prometheus/value.go
index 6206928cc..c778711b8 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/value.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/value.go
@@ -19,7 +19,7 @@ import (
 	"time"
 	"unicode/utf8"
 
-	//lint:ignore SA1019 Need to keep deprecated package for compatibility.
+	//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
 	"github.com/golang/protobuf/proto"
 	"github.com/golang/protobuf/ptypes"
 
@@ -63,7 +63,7 @@ func newValueFunc(desc *Desc, valueType ValueType, function func() float64) *val
 		desc:       desc,
 		valType:    valueType,
 		function:   function,
-		labelPairs: makeLabelPairs(desc, nil),
+		labelPairs: MakeLabelPairs(desc, nil),
 	}
 	result.init(result)
 	return result
@@ -95,7 +95,7 @@ func NewConstMetric(desc *Desc, valueType ValueType, value float64, labelValues
 		desc:       desc,
 		valType:    valueType,
 		val:        value,
-		labelPairs: makeLabelPairs(desc, labelValues),
+		labelPairs: MakeLabelPairs(desc, labelValues),
 	}, nil
 }
 
@@ -145,7 +145,14 @@ func populateMetric(
 	return nil
 }
 
-func makeLabelPairs(desc *Desc, labelValues []string) []*dto.LabelPair {
+// MakeLabelPairs is a helper function to create protobuf LabelPairs from the
+// variable and constant labels in the provided Desc. The values for the
+// variable labels are defined by the labelValues slice, which must be in the
+// same order as the corresponding variable labels in the Desc.
+//
+// This function is only needed for custom Metric implementations. See MetricVec
+// example.
+func MakeLabelPairs(desc *Desc, labelValues []string) []*dto.LabelPair {
 	totalLen := len(desc.variableLabels) + len(desc.constLabelPairs)
 	if totalLen == 0 {
 		// Super fast path.
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/vec.go b/vendor/github.com/prometheus/client_golang/prometheus/vec.go
index d53848dc4..4ababe6c9 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/vec.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/vec.go
@@ -20,12 +20,20 @@ import (
 	"github.com/prometheus/common/model"
 )
 
-// metricVec is a Collector to bundle metrics of the same name that differ in
-// their label values. metricVec is not used directly (and therefore
-// unexported). It is used as a building block for implementations of vectors of
-// a given metric type, like GaugeVec, CounterVec, SummaryVec, and HistogramVec.
-// It also handles label currying.
-type metricVec struct {
+// MetricVec is a Collector to bundle metrics of the same name that differ in
+// their label values. MetricVec is not used directly but as a building block
+// for implementations of vectors of a given metric type, like GaugeVec,
+// CounterVec, SummaryVec, and HistogramVec. It is exported so that it can be
+// used for custom Metric implementations.
+//
+// To create a FooVec for custom Metric Foo, embed a pointer to MetricVec in
+// FooVec and initialize it with NewMetricVec. Implement wrappers for
+// GetMetricWithLabelValues and GetMetricWith that return (Foo, error) rather
+// than (Metric, error). Similarly, create a wrapper for CurryWith that returns
+// (*FooVec, error) rather than (*MetricVec, error). It is recommended to also
+// add the convenience methods WithLabelValues, With, and MustCurryWith, which
+// panic instead of returning errors. See also the MetricVec example.
+type MetricVec struct {
 	*metricMap
 
 	curry []curriedLabelValue
@@ -35,9 +43,9 @@ type metricVec struct {
 	hashAddByte func(h uint64, b byte) uint64
 }
 
-// newMetricVec returns an initialized metricVec.
-func newMetricVec(desc *Desc, newMetric func(lvs ...string) Metric) *metricVec {
-	return &metricVec{
+// NewMetricVec returns an initialized metricVec.
+func NewMetricVec(desc *Desc, newMetric func(lvs ...string) Metric) *MetricVec {
+	return &MetricVec{
 		metricMap: &metricMap{
 			metrics:   map[uint64][]metricWithLabelValues{},
 			desc:      desc,
@@ -63,7 +71,7 @@ func newMetricVec(desc *Desc, newMetric func(lvs ...string) Metric) *metricVec {
 // latter has a much more readable (albeit more verbose) syntax, but it comes
 // with a performance overhead (for creating and processing the Labels map).
 // See also the CounterVec example.
-func (m *metricVec) DeleteLabelValues(lvs ...string) bool {
+func (m *MetricVec) DeleteLabelValues(lvs ...string) bool {
 	h, err := m.hashLabelValues(lvs)
 	if err != nil {
 		return false
@@ -82,7 +90,7 @@ func (m *metricVec) DeleteLabelValues(lvs ...string) bool {
 //
 // This method is used for the same purpose as DeleteLabelValues(...string). See
 // there for pros and cons of the two methods.
-func (m *metricVec) Delete(labels Labels) bool {
+func (m *MetricVec) Delete(labels Labels) bool {
 	h, err := m.hashLabels(labels)
 	if err != nil {
 		return false
@@ -95,15 +103,32 @@ func (m *metricVec) Delete(labels Labels) bool {
 // show up in GoDoc.
 
 // Describe implements Collector.
-func (m *metricVec) Describe(ch chan<- *Desc) { m.metricMap.Describe(ch) }
+func (m *MetricVec) Describe(ch chan<- *Desc) { m.metricMap.Describe(ch) }
 
 // Collect implements Collector.
-func (m *metricVec) Collect(ch chan<- Metric) { m.metricMap.Collect(ch) }
+func (m *MetricVec) Collect(ch chan<- Metric) { m.metricMap.Collect(ch) }
 
 // Reset deletes all metrics in this vector.
-func (m *metricVec) Reset() { m.metricMap.Reset() }
-
-func (m *metricVec) curryWith(labels Labels) (*metricVec, error) {
+func (m *MetricVec) Reset() { m.metricMap.Reset() }
+
+// CurryWith returns a vector curried with the provided labels, i.e. the
+// returned vector has those labels pre-set for all labeled operations performed
+// on it. The cardinality of the curried vector is reduced accordingly. The
+// order of the remaining labels stays the same (just with the curried labels
+// taken out of the sequence – which is relevant for the
+// (GetMetric)WithLabelValues methods). It is possible to curry a curried
+// vector, but only with labels not yet used for currying before.
+//
+// The metrics contained in the MetricVec are shared between the curried and
+// uncurried vectors. They are just accessed differently. Curried and uncurried
+// vectors behave identically in terms of collection. Only one must be
+// registered with a given registry (usually the uncurried version). The Reset
+// method deletes all metrics, even if called on a curried vector.
+//
+// Note that CurryWith is usually not called directly but through a wrapper
+// around MetricVec, implementing a vector for a specific Metric
+// implementation, for example GaugeVec.
+func (m *MetricVec) CurryWith(labels Labels) (*MetricVec, error) {
 	var (
 		newCurry []curriedLabelValue
 		oldCurry = m.curry
@@ -128,7 +153,7 @@ func (m *metricVec) curryWith(labels Labels) (*metricVec, error) {
 		return nil, fmt.Errorf("%d unknown label(s) found during currying", l)
 	}
 
-	return &metricVec{
+	return &MetricVec{
 		metricMap:   m.metricMap,
 		curry:       newCurry,
 		hashAdd:     m.hashAdd,
@@ -136,7 +161,34 @@ func (m *metricVec) curryWith(labels Labels) (*metricVec, error) {
 	}, nil
 }
 
-func (m *metricVec) getMetricWithLabelValues(lvs ...string) (Metric, error) {
+// GetMetricWithLabelValues returns the Metric for the given slice of label
+// values (same order as the variable labels in Desc). If that combination of
+// label values is accessed for the first time, a new Metric is created (by
+// calling the newMetric function provided during construction of the
+// MetricVec).
+//
+// It is possible to call this method without using the returned Metric to only
+// create the new Metric but leave it in its initial state.
+//
+// Keeping the Metric for later use is possible (and should be considered if
+// performance is critical), but keep in mind that Reset, DeleteLabelValues and
+// Delete can be used to delete the Metric from the MetricVec. In that case, the
+// Metric will still exist, but it will not be exported anymore, even if a
+// Metric with the same label values is created later.
+//
+// An error is returned if the number of label values is not the same as the
+// number of variable labels in Desc (minus any curried labels).
+//
+// Note that for more than one label value, this method is prone to mistakes
+// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
+// an alternative to avoid that type of mistake. For higher label numbers, the
+// latter has a much more readable (albeit more verbose) syntax, but it comes
+// with a performance overhead (for creating and processing the Labels map).
+//
+// Note that GetMetricWithLabelValues is usually not called directly but through
+// a wrapper around MetricVec, implementing a vector for a specific Metric
+// implementation, for example GaugeVec.
+func (m *MetricVec) GetMetricWithLabelValues(lvs ...string) (Metric, error) {
 	h, err := m.hashLabelValues(lvs)
 	if err != nil {
 		return nil, err
@@ -145,7 +197,23 @@ func (m *metricVec) getMetricWithLabelValues(lvs ...string) (Metric, error) {
 	return m.metricMap.getOrCreateMetricWithLabelValues(h, lvs, m.curry), nil
 }
 
-func (m *metricVec) getMetricWith(labels Labels) (Metric, error) {
+// GetMetricWith returns the Metric for the given Labels map (the label names
+// must match those of the variable labels in Desc). If that label map is
+// accessed for the first time, a new Metric is created. Implications of
+// creating a Metric without using it and keeping the Metric for later use
+// are the same as for GetMetricWithLabelValues.
+//
+// An error is returned if the number and names of the Labels are inconsistent
+// with those of the variable labels in Desc (minus any curried labels).
+//
+// This method is used for the same purpose as
+// GetMetricWithLabelValues(...string). See there for pros and cons of the two
+// methods.
+//
+// Note that GetMetricWith is usually not called directly but through a wrapper
+// around MetricVec, implementing a vector for a specific Metric implementation,
+// for example GaugeVec.
+func (m *MetricVec) GetMetricWith(labels Labels) (Metric, error) {
 	h, err := m.hashLabels(labels)
 	if err != nil {
 		return nil, err
@@ -154,7 +222,7 @@ func (m *metricVec) getMetricWith(labels Labels) (Metric, error) {
 	return m.metricMap.getOrCreateMetricWithLabels(h, labels, m.curry), nil
 }
 
-func (m *metricVec) hashLabelValues(vals []string) (uint64, error) {
+func (m *MetricVec) hashLabelValues(vals []string) (uint64, error) {
 	if err := validateLabelValues(vals, len(m.desc.variableLabels)-len(m.curry)); err != nil {
 		return 0, err
 	}
@@ -177,7 +245,7 @@ func (m *metricVec) hashLabelValues(vals []string) (uint64, error) {
 	return h, nil
 }
 
-func (m *metricVec) hashLabels(labels Labels) (uint64, error) {
+func (m *MetricVec) hashLabels(labels Labels) (uint64, error) {
 	if err := validateValuesInLabels(labels, len(m.desc.variableLabels)-len(m.curry)); err != nil {
 		return 0, err
 	}
@@ -276,7 +344,9 @@ func (m *metricMap) deleteByHashWithLabelValues(
 	}
 
 	if len(metrics) > 1 {
+		old := metrics
 		m.metrics[h] = append(metrics[:i], metrics[i+1:]...)
+		old[len(old)-1] = metricWithLabelValues{}
 	} else {
 		delete(m.metrics, h)
 	}
@@ -302,7 +372,9 @@ func (m *metricMap) deleteByHashWithLabels(
 	}
 
 	if len(metrics) > 1 {
+		old := metrics
 		m.metrics[h] = append(metrics[:i], metrics[i+1:]...)
+		old[len(old)-1] = metricWithLabelValues{}
 	} else {
 		delete(m.metrics, h)
 	}
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/wrap.go b/vendor/github.com/prometheus/client_golang/prometheus/wrap.go
index 438aa5e92..74ee93280 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/wrap.go
+++ b/vendor/github.com/prometheus/client_golang/prometheus/wrap.go
@@ -17,7 +17,7 @@ import (
 	"fmt"
 	"sort"
 
-	//lint:ignore SA1019 Need to keep deprecated package for compatibility.
+	//nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
 	"github.com/golang/protobuf/proto"
 
 	dto "github.com/prometheus/client_model/go"
@@ -32,7 +32,9 @@ import (
 // in a no-op Registerer.
 //
 // WrapRegistererWith provides a way to add fixed labels to a subset of
-// Collectors. It should not be used to add fixed labels to all metrics exposed.
+// Collectors. It should not be used to add fixed labels to all metrics
+// exposed. See also
+// https://prometheus.io/docs/instrumenting/writing_exporters/#target-labels-not-static-scraped-labels
 //
 // Conflicts between Collectors registered through the original Registerer with
 // Collectors registered through the wrapping Registerer will still be
diff --git a/vendor/github.com/prometheus/common/expfmt/decode.go b/vendor/github.com/prometheus/common/expfmt/decode.go
index c092723e8..7657f841d 100644
--- a/vendor/github.com/prometheus/common/expfmt/decode.go
+++ b/vendor/github.com/prometheus/common/expfmt/decode.go
@@ -164,7 +164,7 @@ func (sd *SampleDecoder) Decode(s *model.Vector) error {
 }
 
 // ExtractSamples builds a slice of samples from the provided metric
-// families. If an error occurrs during sample extraction, it continues to
+// families. If an error occurs during sample extraction, it continues to
 // extract from the remaining metric families. The returned error is the last
 // error that has occurred.
 func ExtractSamples(o *DecodeOptions, fams ...*dto.MetricFamily) (model.Vector, error) {
diff --git a/vendor/github.com/prometheus/common/expfmt/encode.go b/vendor/github.com/prometheus/common/expfmt/encode.go
index bd4e34745..64dc0eb40 100644
--- a/vendor/github.com/prometheus/common/expfmt/encode.go
+++ b/vendor/github.com/prometheus/common/expfmt/encode.go
@@ -18,7 +18,7 @@ import (
 	"io"
 	"net/http"
 
-	"github.com/golang/protobuf/proto"
+	"github.com/golang/protobuf/proto" //nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
 	"github.com/matttproud/golang_protobuf_extensions/pbutil"
 	"github.com/prometheus/common/internal/bitbucket.org/ww/goautoneg"
 
diff --git a/vendor/github.com/prometheus/common/expfmt/text_parse.go b/vendor/github.com/prometheus/common/expfmt/text_parse.go
index 342e5940d..84be0643e 100644
--- a/vendor/github.com/prometheus/common/expfmt/text_parse.go
+++ b/vendor/github.com/prometheus/common/expfmt/text_parse.go
@@ -24,7 +24,7 @@ import (
 
 	dto "github.com/prometheus/client_model/go"
 
-	"github.com/golang/protobuf/proto"
+	"github.com/golang/protobuf/proto" //nolint:staticcheck // Ignore SA1019. Need to keep deprecated package for compatibility.
 	"github.com/prometheus/common/model"
 )
 
@@ -299,6 +299,17 @@ func (p *TextParser) startLabelName() stateFn {
 		p.parseError(fmt.Sprintf("expected '=' after label name, found %q", p.currentByte))
 		return nil
 	}
+	// Check for duplicate label names.
+	labels := make(map[string]struct{})
+	for _, l := range p.currentMetric.Label {
+		lName := l.GetName()
+		if _, exists := labels[lName]; !exists {
+			labels[lName] = struct{}{}
+		} else {
+			p.parseError(fmt.Sprintf("duplicate label names for metric %q", p.currentMF.GetName()))
+			return nil
+		}
+	}
 	return p.startLabelValue
 }
 
diff --git a/vendor/github.com/prometheus/common/model/fnv.go b/vendor/github.com/prometheus/common/model/fnv.go
index 038fc1c90..367afecd3 100644
--- a/vendor/github.com/prometheus/common/model/fnv.go
+++ b/vendor/github.com/prometheus/common/model/fnv.go
@@ -20,7 +20,7 @@ const (
 	prime64  = 1099511628211
 )
 
-// hashNew initializies a new fnv64a hash value.
+// hashNew initializes a new fnv64a hash value.
 func hashNew() uint64 {
 	return offset64
 }
diff --git a/vendor/github.com/prometheus/common/model/labels.go b/vendor/github.com/prometheus/common/model/labels.go
index 41051a01a..ef8956335 100644
--- a/vendor/github.com/prometheus/common/model/labels.go
+++ b/vendor/github.com/prometheus/common/model/labels.go
@@ -45,6 +45,14 @@ const (
 	// scrape a target.
 	MetricsPathLabel = "__metrics_path__"
 
+	// ScrapeIntervalLabel is the name of the label that holds the scrape interval
+	// used to scrape a target.
+	ScrapeIntervalLabel = "__scrape_interval__"
+
+	// ScrapeTimeoutLabel is the name of the label that holds the scrape
+	// timeout used to scrape a target.
+	ScrapeTimeoutLabel = "__scrape_timeout__"
+
 	// ReservedLabelPrefix is a prefix which is not legal in user-supplied
 	// label names.
 	ReservedLabelPrefix = "__"
diff --git a/vendor/github.com/prometheus/common/model/time.go b/vendor/github.com/prometheus/common/model/time.go
index 490a0240c..7f67b16e4 100644
--- a/vendor/github.com/prometheus/common/model/time.go
+++ b/vendor/github.com/prometheus/common/model/time.go
@@ -14,6 +14,8 @@
 package model
 
 import (
+	"encoding/json"
+	"errors"
 	"fmt"
 	"math"
 	"regexp"
@@ -181,77 +183,118 @@ func (d *Duration) Type() string {
 	return "duration"
 }
 
-var durationRE = regexp.MustCompile("^([0-9]+)(y|w|d|h|m|s|ms)$")
+var durationRE = regexp.MustCompile("^(([0-9]+)y)?(([0-9]+)w)?(([0-9]+)d)?(([0-9]+)h)?(([0-9]+)m)?(([0-9]+)s)?(([0-9]+)ms)?$")
 
 // ParseDuration parses a string into a time.Duration, assuming that a year
 // always has 365d, a week always has 7d, and a day always has 24h.
 func ParseDuration(durationStr string) (Duration, error) {
-	// Allow 0 without a unit.
-	if durationStr == "0" {
+	switch durationStr {
+	case "0":
+		// Allow 0 without a unit.
 		return 0, nil
+	case "":
+		return 0, fmt.Errorf("empty duration string")
 	}
 	matches := durationRE.FindStringSubmatch(durationStr)
-	if len(matches) != 3 {
+	if matches == nil {
 		return 0, fmt.Errorf("not a valid duration string: %q", durationStr)
 	}
-	var (
-		n, _ = strconv.Atoi(matches[1])
-		dur  = time.Duration(n) * time.Millisecond
-	)
-	switch unit := matches[2]; unit {
-	case "y":
-		dur *= 1000 * 60 * 60 * 24 * 365
-	case "w":
-		dur *= 1000 * 60 * 60 * 24 * 7
-	case "d":
-		dur *= 1000 * 60 * 60 * 24
-	case "h":
-		dur *= 1000 * 60 * 60
-	case "m":
-		dur *= 1000 * 60
-	case "s":
-		dur *= 1000
-	case "ms":
-		// Value already correct
-	default:
-		return 0, fmt.Errorf("invalid time unit in duration string: %q", unit)
+	var dur time.Duration
+
+	// Parse the match at pos `pos` in the regex and use `mult` to turn that
+	// into ms, then add that value to the total parsed duration.
+	var overflowErr error
+	m := func(pos int, mult time.Duration) {
+		if matches[pos] == "" {
+			return
+		}
+		n, _ := strconv.Atoi(matches[pos])
+
+		// Check if the provided duration overflows time.Duration (> ~ 290years).
+		if n > int((1<<63-1)/mult/time.Millisecond) {
+			overflowErr = errors.New("duration out of range")
+		}
+		d := time.Duration(n) * time.Millisecond
+		dur += d * mult
+
+		if dur < 0 {
+			overflowErr = errors.New("duration out of range")
+		}
 	}
-	return Duration(dur), nil
+
+	m(2, 1000*60*60*24*365) // y
+	m(4, 1000*60*60*24*7)   // w
+	m(6, 1000*60*60*24)     // d
+	m(8, 1000*60*60)        // h
+	m(10, 1000*60)          // m
+	m(12, 1000)             // s
+	m(14, 1)                // ms
+
+	return Duration(dur), overflowErr
 }
 
 func (d Duration) String() string {
 	var (
-		ms   = int64(time.Duration(d) / time.Millisecond)
-		unit = "ms"
+		ms = int64(time.Duration(d) / time.Millisecond)
+		r  = ""
 	)
 	if ms == 0 {
 		return "0s"
 	}
-	factors := map[string]int64{
-		"y":  1000 * 60 * 60 * 24 * 365,
-		"w":  1000 * 60 * 60 * 24 * 7,
-		"d":  1000 * 60 * 60 * 24,
-		"h":  1000 * 60 * 60,
-		"m":  1000 * 60,
-		"s":  1000,
-		"ms": 1,
+
+	f := func(unit string, mult int64, exact bool) {
+		if exact && ms%mult != 0 {
+			return
+		}
+		if v := ms / mult; v > 0 {
+			r += fmt.Sprintf("%d%s", v, unit)
+			ms -= v * mult
+		}
 	}
 
-	switch int64(0) {
-	case ms % factors["y"]:
-		unit = "y"
-	case ms % factors["w"]:
-		unit = "w"
-	case ms % factors["d"]:
-		unit = "d"
-	case ms % factors["h"]:
-		unit = "h"
-	case ms % factors["m"]:
-		unit = "m"
-	case ms % factors["s"]:
-		unit = "s"
+	// Only format years and weeks if the remainder is zero, as it is often
+	// easier to read 90d than 12w6d.
+	f("y", 1000*60*60*24*365, true)
+	f("w", 1000*60*60*24*7, true)
+
+	f("d", 1000*60*60*24, false)
+	f("h", 1000*60*60, false)
+	f("m", 1000*60, false)
+	f("s", 1000, false)
+	f("ms", 1, false)
+
+	return r
+}
+
+// MarshalJSON implements the json.Marshaler interface.
+func (d Duration) MarshalJSON() ([]byte, error) {
+	return json.Marshal(d.String())
+}
+
+// UnmarshalJSON implements the json.Unmarshaler interface.
+func (d *Duration) UnmarshalJSON(bytes []byte) error {
+	var s string
+	if err := json.Unmarshal(bytes, &s); err != nil {
+		return err
+	}
+	dur, err := ParseDuration(s)
+	if err != nil {
+		return err
 	}
-	return fmt.Sprintf("%v%v", ms/factors[unit], unit)
+	*d = dur
+	return nil
+}
+
+// MarshalText implements the encoding.TextMarshaler interface.
+func (d *Duration) MarshalText() ([]byte, error) {
+	return []byte(d.String()), nil
+}
+
+// UnmarshalText implements the encoding.TextUnmarshaler interface.
+func (d *Duration) UnmarshalText(text []byte) error {
+	var err error
+	*d, err = ParseDuration(string(text))
+	return err
 }
 
 // MarshalYAML implements the yaml.Marshaler interface.
diff --git a/vendor/github.com/prometheus/procfs/Makefile b/vendor/github.com/prometheus/procfs/Makefile
index 616a0d25e..fa2bd5b52 100644
--- a/vendor/github.com/prometheus/procfs/Makefile
+++ b/vendor/github.com/prometheus/procfs/Makefile
@@ -18,6 +18,8 @@ include Makefile.common
 	./ttar -C $(dir $*) -x -f $*.ttar
 	touch $@
 
+fixtures: fixtures/.unpacked
+
 update_fixtures:
 	rm -vf fixtures/.unpacked
 	./ttar -c -f fixtures.ttar fixtures/
diff --git a/vendor/github.com/prometheus/procfs/Makefile.common b/vendor/github.com/prometheus/procfs/Makefile.common
index 3ac29c636..a1b1ca40f 100644
--- a/vendor/github.com/prometheus/procfs/Makefile.common
+++ b/vendor/github.com/prometheus/procfs/Makefile.common
@@ -78,12 +78,12 @@ ifneq ($(shell which gotestsum),)
 endif
 endif
 
-PROMU_VERSION ?= 0.7.0
+PROMU_VERSION ?= 0.12.0
 PROMU_URL     := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz
 
 GOLANGCI_LINT :=
 GOLANGCI_LINT_OPTS ?=
-GOLANGCI_LINT_VERSION ?= v1.18.0
+GOLANGCI_LINT_VERSION ?= v1.39.0
 # golangci-lint only supports linux, darwin and windows platforms on i386/amd64.
 # windows isn't included here because of the path separator being different.
 ifeq ($(GOHOSTOS),$(filter $(GOHOSTOS),linux darwin))
@@ -118,7 +118,7 @@ endif
 %: common-% ;
 
 .PHONY: common-all
-common-all: precheck style check_license lint unused build test
+common-all: precheck style check_license lint yamllint unused build test
 
 .PHONY: common-style
 common-style:
@@ -198,6 +198,15 @@ else
 endif
 endif
 
+.PHONY: common-yamllint
+common-yamllint:
+	@echo ">> running yamllint on all YAML files in the repository"
+ifeq (, $(shell which yamllint))
+	@echo "yamllint not installed so skipping"
+else
+	yamllint .
+endif
+
 # For backward-compatibility.
 .PHONY: common-staticcheck
 common-staticcheck: lint
diff --git a/vendor/github.com/prometheus/procfs/README.md b/vendor/github.com/prometheus/procfs/README.md
index 55d1e3261..43c37735a 100644
--- a/vendor/github.com/prometheus/procfs/README.md
+++ b/vendor/github.com/prometheus/procfs/README.md
@@ -6,8 +6,8 @@ metrics from the pseudo-filesystems /proc and /sys.
 *WARNING*: This package is a work in progress. Its API may still break in
 backwards-incompatible ways without warnings. Use it at your own risk.
 
-[![GoDoc](https://godoc.org/github.com/prometheus/procfs?status.png)](https://godoc.org/github.com/prometheus/procfs)
-[![Build Status](https://travis-ci.org/prometheus/procfs.svg?branch=master)](https://travis-ci.org/prometheus/procfs)
+[![Go Reference](https://pkg.go.dev/badge/github.com/prometheus/procfs.svg)](https://pkg.go.dev/github.com/prometheus/procfs)
+[![CircleCI](https://circleci.com/gh/prometheus/procfs/tree/master.svg?style=svg)](https://circleci.com/gh/prometheus/procfs/tree/master)
 [![Go Report Card](https://goreportcard.com/badge/github.com/prometheus/procfs)](https://goreportcard.com/report/github.com/prometheus/procfs)
 
 ## Usage
diff --git a/vendor/github.com/prometheus/client_golang/prometheus/build_info_pre_1.12.go b/vendor/github.com/prometheus/procfs/cmdline.go
index 6609e2877..bf4f3b48c 100644
--- a/vendor/github.com/prometheus/client_golang/prometheus/build_info_pre_1.12.go
+++ b/vendor/github.com/prometheus/procfs/cmdline.go
@@ -1,4 +1,4 @@
-// Copyright 2019 The Prometheus Authors
+// Copyright 2021 The Prometheus Authors
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -11,12 +11,20 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// +build !go1.12
+package procfs
 
-package prometheus
+import (
+	"strings"
 
-// readBuildInfo is a wrapper around debug.ReadBuildInfo for Go versions before
-// 1.12. Remove this whole file once the minimum supported Go version is 1.12.
-func readBuildInfo() (path, version, sum string) {
-	return "unknown", "unknown", "unknown"
+	"github.com/prometheus/procfs/internal/util"
+)
+
+// CmdLine returns the command line of the kernel.
+func (fs FS) CmdLine() ([]string, error) {
+	data, err := util.ReadFileNoStat(fs.proc.Path("cmdline"))
+	if err != nil {
+		return nil, err
+	}
+
+	return strings.Fields(string(data)), nil
 }
diff --git a/vendor/github.com/prometheus/procfs/doc.go b/vendor/github.com/prometheus/procfs/doc.go
index e2acd6d40..d31a82600 100644
--- a/vendor/github.com/prometheus/procfs/doc.go
+++ b/vendor/github.com/prometheus/procfs/doc.go
@@ -31,7 +31,7 @@
 //    		log.Fatalf("could not get process: %s", err)
 //    	}
 //
-//    	stat, err := p.NewStat()
+//    	stat, err := p.Stat()
 //    	if err != nil {
 //    		log.Fatalf("could not get process stat: %s", err)
 //    	}
diff --git a/vendor/github.com/prometheus/procfs/fixtures.ttar b/vendor/github.com/prometheus/procfs/fixtures.ttar
index 1e76173da..5e7eeef4a 100644
--- a/vendor/github.com/prometheus/procfs/fixtures.ttar
+++ b/vendor/github.com/prometheus/procfs/fixtures.ttar
@@ -644,6 +644,11 @@ Node 0, zone    DMA32    759    572    791    475    194     45     12      0
 Node 0, zone   Normal   4381   1093    185   1530    567    102      4      0      0      0      0
 Mode: 644
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/proc/cmdline
+Lines: 1
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+Path: fixtures/sys/devices/pci0000:00/0000:00:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/scsi_tape/st0m/stats/other_cnt
+Lines: 1
+1409EOF
+Mode: 444
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/devices/pci0000:00/0000:00:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/scsi_tape/st0m/stats/read_byte_cnt
+Lines: 1
+979383912EOF
+Mode: 444
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/devices/pci0000:00/0000:00:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/scsi_tape/st0m/stats/read_cnt
+Lines: 1
+3741EOF
+Mode: 444
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/devices/pci0000:00/0000:00:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/scsi_tape/st0m/stats/read_ns
+Lines: 1
+33788355744EOF
+Mode: 444
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/devices/pci0000:00/0000:00:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/scsi_tape/st0m/stats/resid_cnt
+Lines: 1
+19EOF
+Mode: 444
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/devices/pci0000:00/0000:00:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/scsi_tape/st0m/stats/write_byte_cnt
+Lines: 1
+1496246784000EOF
+Mode: 444
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/devices/pci0000:00/0000:00:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/scsi_tape/st0m/stats/write_cnt
+Lines: 1
+53772916EOF
+Mode: 444
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/devices/pci0000:00/0000:00:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/scsi_tape/st0m/stats/write_ns
+Lines: 1
+5233597394395EOF
+Mode: 444
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Directory: fixtures/sys/devices/pci0000:00/0000:00:0d.0
 Mode: 755
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -4978,35 +6098,6 @@ Mode: 644
 Directory: fixtures/sys/devices/system
 Mode: 775
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Directory: fixtures/sys/devices/system/node
-Mode: 775
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Directory: fixtures/sys/devices/system/node/node1
-Mode: 755
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/sys/devices/system/node/node1/vmstat
-Lines: 6
-nr_free_pages 1
-nr_zone_inactive_anon 2
-nr_zone_active_anon 3
-nr_zone_inactive_file 4
-nr_zone_active_file 5
-nr_zone_unevictable 6
-Mode: 644
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Directory: fixtures/sys/devices/system/node/node2
-Mode: 755
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/sys/devices/system/node/node2/vmstat
-Lines: 6
-nr_free_pages 7
-nr_zone_inactive_anon 8
-nr_zone_active_anon 9
-nr_zone_inactive_file 10
-nr_zone_active_file 11
-nr_zone_unevictable 12
-Mode: 644
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Directory: fixtures/sys/devices/system/clocksource
 Mode: 775
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@@ -5254,6 +6345,35 @@ Mode: 644
 Directory: fixtures/sys/devices/system/cpu/cpufreq/policy1
 Mode: 755
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/devices/system/node
+Mode: 775
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/devices/system/node/node1
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/devices/system/node/node1/vmstat
+Lines: 6
+nr_free_pages 1
+nr_zone_inactive_anon 2
+nr_zone_active_anon 3
+nr_zone_inactive_file 4
+nr_zone_active_file 5
+nr_zone_unevictable 6
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Directory: fixtures/sys/devices/system/node/node2
+Mode: 755
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+Path: fixtures/sys/devices/system/node/node2/vmstat
+Lines: 6
+nr_free_pages 7
+nr_zone_inactive_anon 8
+nr_zone_active_anon 9
+nr_zone_inactive_file 10
+nr_zone_active_file 11
+nr_zone_unevictable 12
+Mode: 644
+# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Directory: fixtures/sys/fs
 Mode: 755
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
diff --git a/vendor/github.com/prometheus/procfs/mdstat.go b/vendor/github.com/prometheus/procfs/mdstat.go
index 4c4493bfa..f0b9e5f75 100644
--- a/vendor/github.com/prometheus/procfs/mdstat.go
+++ b/vendor/github.com/prometheus/procfs/mdstat.go
@@ -22,9 +22,12 @@ import (
 )
 
 var (
-	statusLineRE      = regexp.MustCompile(`(\d+) blocks .*\[(\d+)/(\d+)\] \[[U_]+\]`)
-	recoveryLineRE    = regexp.MustCompile(`\((\d+)/\d+\)`)
-	componentDeviceRE = regexp.MustCompile(`(.*)\[\d+\]`)
+	statusLineRE         = regexp.MustCompile(`(\d+) blocks .*\[(\d+)/(\d+)\] \[([U_]+)\]`)
+	recoveryLineBlocksRE = regexp.MustCompile(`\((\d+)/\d+\)`)
+	recoveryLinePctRE    = regexp.MustCompile(`= (.+)%`)
+	recoveryLineFinishRE = regexp.MustCompile(`finish=(.+)min`)
+	recoveryLineSpeedRE  = regexp.MustCompile(`speed=(.+)[A-Z]`)
+	componentDeviceRE    = regexp.MustCompile(`(.*)\[\d+\]`)
 )
 
 // MDStat holds info parsed from /proc/mdstat.
@@ -39,12 +42,20 @@ type MDStat struct {
 	DisksTotal int64
 	// Number of failed disks.
 	DisksFailed int64
+	// Number of "down" disks. (the _ indicator in the status line)
+	DisksDown int64
 	// Spare disks in the device.
 	DisksSpare int64
 	// Number of blocks the device holds.
 	BlocksTotal int64
 	// Number of blocks on the device that are in sync.
 	BlocksSynced int64
+	// progress percentage of current sync
+	BlocksSyncedPct float64
+	// estimated finishing time for current sync (in minutes)
+	BlocksSyncedFinishTime float64
+	// current sync speed (in Kilobytes/sec)
+	BlocksSyncedSpeed float64
 	// Name of md component devices
 	Devices []string
 }
@@ -91,7 +102,7 @@ func parseMDStat(mdStatData []byte) ([]MDStat, error) {
 		// Failed disks have the suffix (F) & Spare disks have the suffix (S).
 		fail := int64(strings.Count(line, "(F)"))
 		spare := int64(strings.Count(line, "(S)"))
-		active, total, size, err := evalStatusLine(lines[i], lines[i+1])
+		active, total, down, size, err := evalStatusLine(lines[i], lines[i+1])
 
 		if err != nil {
 			return nil, fmt.Errorf("error parsing md device lines: %w", err)
@@ -105,6 +116,9 @@ func parseMDStat(mdStatData []byte) ([]MDStat, error) {
 		// If device is syncing at the moment, get the number of currently
 		// synced bytes, otherwise that number equals the size of the device.
 		syncedBlocks := size
+		speed := float64(0)
+		finish := float64(0)
+		pct := float64(0)
 		recovering := strings.Contains(lines[syncLineIdx], "recovery")
 		resyncing := strings.Contains(lines[syncLineIdx], "resync")
 		checking := strings.Contains(lines[syncLineIdx], "check")
@@ -124,7 +138,7 @@ func parseMDStat(mdStatData []byte) ([]MDStat, error) {
 				strings.Contains(lines[syncLineIdx], "DELAYED") {
 				syncedBlocks = 0
 			} else {
-				syncedBlocks, err = evalRecoveryLine(lines[syncLineIdx])
+				syncedBlocks, pct, finish, speed, err = evalRecoveryLine(lines[syncLineIdx])
 				if err != nil {
 					return nil, fmt.Errorf("error parsing sync line in md device %q: %w", mdName, err)
 				}
@@ -132,69 +146,104 @@ func parseMDStat(mdStatData []byte) ([]MDStat, error) {
 		}
 
 		mdStats = append(mdStats, MDStat{
-			Name:          mdName,
-			ActivityState: state,
-			DisksActive:   active,
-			DisksFailed:   fail,
-			DisksSpare:    spare,
-			DisksTotal:    total,
-			BlocksTotal:   size,
-			BlocksSynced:  syncedBlocks,
-			Devices:       evalComponentDevices(deviceFields),
+			Name:                   mdName,
+			ActivityState:          state,
+			DisksActive:            active,
+			DisksFailed:            fail,
+			DisksDown:              down,
+			DisksSpare:             spare,
+			DisksTotal:             total,
+			BlocksTotal:            size,
+			BlocksSynced:           syncedBlocks,
+			BlocksSyncedPct:        pct,
+			BlocksSyncedFinishTime: finish,
+			BlocksSyncedSpeed:      speed,
+			Devices:                evalComponentDevices(deviceFields),
 		})
 	}
 
 	return mdStats, nil
 }
 
-func evalStatusLine(deviceLine, statusLine string) (active, total, size int64, err error) {
+func evalStatusLine(deviceLine, statusLine string) (active, total, down, size int64, err error) {
 
 	sizeStr := strings.Fields(statusLine)[0]
 	size, err = strconv.ParseInt(sizeStr, 10, 64)
 	if err != nil {
-		return 0, 0, 0, fmt.Errorf("unexpected statusLine %q: %w", statusLine, err)
+		return 0, 0, 0, 0, fmt.Errorf("unexpected statusLine %q: %w", statusLine, err)
 	}
 
 	if strings.Contains(deviceLine, "raid0") || strings.Contains(deviceLine, "linear") {
 		// In the device deviceLine, only disks have a number associated with them in [].
 		total = int64(strings.Count(deviceLine, "["))
-		return total, total, size, nil
+		return total, total, 0, size, nil
 	}
 
 	if strings.Contains(deviceLine, "inactive") {
-		return 0, 0, size, nil
+		return 0, 0, 0, size, nil
 	}
 
 	matches := statusLineRE.FindStringSubmatch(statusLine)
-	if len(matches) != 4 {
-		return 0, 0, 0, fmt.Errorf("couldn't find all the substring matches: %s", statusLine)
+	if len(matches) != 5 {
+		return 0, 0, 0, 0, fmt.Errorf("couldn't find all the substring matches: %s", statusLine)
 	}
 
 	total, err = strconv.ParseInt(matches[2], 10, 64)
 	if err != nil {
-		return 0, 0, 0, fmt.Errorf("unexpected statusLine %q: %w", statusLine, err)
+		return 0, 0, 0, 0, fmt.Errorf("unexpected statusLine %q: %w", statusLine, err)
 	}
 
 	active, err = strconv.ParseInt(matches[3], 10, 64)
 	if err != nil {
-		return 0, 0, 0, fmt.Errorf("unexpected statusLine %q: %w", statusLine, err)
+		return 0, 0, 0, 0, fmt.Errorf("unexpected statusLine %q: %w", statusLine, err)
 	}
+	down = int64(strings.Count(matches[4], "_"))
 
-	return active, total, size, nil
+	return active, total, down, size, nil
 }
 
-func evalRecoveryLine(recoveryLine string) (syncedBlocks int64, err error) {
-	matches := recoveryLineRE.FindStringSubmatch(recoveryLine)
+func evalRecoveryLine(recoveryLine string) (syncedBlocks int64, pct float64, finish float64, speed float64, err error) {
+	matches := recoveryLineBlocksRE.FindStringSubmatch(recoveryLine)
 	if len(matches) != 2 {
-		return 0, fmt.Errorf("unexpected recoveryLine: %s", recoveryLine)
+		return 0, 0, 0, 0, fmt.Errorf("unexpected recoveryLine: %s", recoveryLine)
 	}
 
 	syncedBlocks, err = strconv.ParseInt(matches[1], 10, 64)
 	if err != nil {
-		return 0, fmt.Errorf("error parsing int from recoveryLine %q: %w", recoveryLine, err)
+		return 0, 0, 0, 0, fmt.Errorf("error parsing int from recoveryLine %q: %w", recoveryLine, err)
 	}
 
-	return syncedBlocks, nil
+	// Get percentage complete
+	matches = recoveryLinePctRE.FindStringSubmatch(recoveryLine)
+	if len(matches) != 2 {
+		return syncedBlocks, 0, 0, 0, fmt.Errorf("unexpected recoveryLine matching percentage: %s", recoveryLine)
+	}
+	pct, err = strconv.ParseFloat(strings.TrimSpace(matches[1]), 64)
+	if err != nil {
+		return syncedBlocks, 0, 0, 0, fmt.Errorf("error parsing float from recoveryLine %q: %w", recoveryLine, err)
+	}
+
+	// Get time expected left to complete
+	matches = recoveryLineFinishRE.FindStringSubmatch(recoveryLine)
+	if len(matches) != 2 {
+		return syncedBlocks, pct, 0, 0, fmt.Errorf("unexpected recoveryLine matching est. finish time: %s", recoveryLine)
+	}
+	finish, err = strconv.ParseFloat(matches[1], 64)
+	if err != nil {
+		return syncedBlocks, pct, 0, 0, fmt.Errorf("error parsing float from recoveryLine %q: %w", recoveryLine, err)
+	}
+
+	// Get recovery speed
+	matches = recoveryLineSpeedRE.FindStringSubmatch(recoveryLine)
+	if len(matches) != 2 {
+		return syncedBlocks, pct, finish, 0, fmt.Errorf("unexpected recoveryLine matching speed: %s", recoveryLine)
+	}
+	speed, err = strconv.ParseFloat(matches[1], 64)
+	if err != nil {
+		return syncedBlocks, pct, finish, 0, fmt.Errorf("error parsing float from recoveryLine %q: %w", recoveryLine, err)
+	}
+
+	return syncedBlocks, pct, finish, speed, nil
 }
 
 func evalComponentDevices(deviceFields []string) []string {
diff --git a/vendor/github.com/prometheus/procfs/net_ip_socket.go b/vendor/github.com/prometheus/procfs/net_ip_socket.go
index ac01dd847..8c9ee3de8 100644
--- a/vendor/github.com/prometheus/procfs/net_ip_socket.go
+++ b/vendor/github.com/prometheus/procfs/net_ip_socket.go
@@ -65,6 +65,7 @@ type (
 		TxQueue   uint64
 		RxQueue   uint64
 		UID       uint64
+		Inode     uint64
 	}
 )
 
@@ -150,9 +151,9 @@ func parseIP(hexIP string) (net.IP, error) {
 // parseNetIPSocketLine parses a single line, represented by a list of fields.
 func parseNetIPSocketLine(fields []string) (*netIPSocketLine, error) {
 	line := &netIPSocketLine{}
-	if len(fields) < 8 {
+	if len(fields) < 10 {
 		return nil, fmt.Errorf(
-			"cannot parse net socket line as it has less then 8 columns %q",
+			"cannot parse net socket line as it has less then 10 columns %q",
 			strings.Join(fields, " "),
 		)
 	}
@@ -216,5 +217,10 @@ func parseNetIPSocketLine(fields []string) (*netIPSocketLine, error) {
 		return nil, fmt.Errorf("cannot parse uid value in socket line: %w", err)
 	}
 
+	// inode
+	if line.Inode, err = strconv.ParseUint(fields[9], 0, 64); err != nil {
+		return nil, fmt.Errorf("cannot parse inode value in socket line: %w", err)
+	}
+
 	return line, nil
 }
diff --git a/vendor/github.com/prometheus/procfs/netstat.go b/vendor/github.com/prometheus/procfs/netstat.go
new file mode 100644
index 000000000..94d892f11
--- /dev/null
+++ b/vendor/github.com/prometheus/procfs/netstat.go
@@ -0,0 +1,68 @@
+// Copyright 2020 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package procfs
+
+import (
+	"bufio"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+)
+
+// NetStat contains statistics for all the counters from one file
+type NetStat struct {
+	Filename string
+	Stats    map[string][]uint64
+}
+
+// NetStat retrieves stats from /proc/net/stat/
+func (fs FS) NetStat() ([]NetStat, error) {
+	statFiles, err := filepath.Glob(fs.proc.Path("net/stat/*"))
+	if err != nil {
+		return nil, err
+	}
+
+	var netStatsTotal []NetStat
+
+	for _, filePath := range statFiles {
+		file, err := os.Open(filePath)
+		if err != nil {
+			return nil, err
+		}
+
+		netStatFile := NetStat{
+			Filename: filepath.Base(filePath),
+			Stats:    make(map[string][]uint64),
+		}
+		scanner := bufio.NewScanner(file)
+		scanner.Scan()
+		// First string is always a header for stats
+		var headers []string
+		headers = append(headers, strings.Fields(scanner.Text())...)
+
+		// Other strings represent per-CPU counters
+		for scanner.Scan() {
+			for num, counter := range strings.Fields(scanner.Text()) {
+				value, err := strconv.ParseUint(counter, 16, 32)
+				if err != nil {
+					return nil, err
+				}
+				netStatFile.Stats[headers[num]] = append(netStatFile.Stats[headers[num]], value)
+			}
+		}
+		netStatsTotal = append(netStatsTotal, netStatFile)
+	}
+	return netStatsTotal, nil
+}
diff --git a/vendor/github.com/prometheus/procfs/proc_cgroup.go b/vendor/github.com/prometheus/procfs/proc_cgroup.go
index 0094a13c0..be45b7987 100644
--- a/vendor/github.com/prometheus/procfs/proc_cgroup.go
+++ b/vendor/github.com/prometheus/procfs/proc_cgroup.go
@@ -90,7 +90,7 @@ func parseCgroups(data []byte) ([]Cgroup, error) {
 // control hierarchy running on this system. On every system (v1 and v2), all hierarchies contain all processes,
 // so the len of the returned struct is equal to the number of active hierarchies on this system
 func (p Proc) Cgroups() ([]Cgroup, error) {
-	data, err := util.ReadFileNoStat(fmt.Sprintf("/proc/%d/cgroup", p.PID))
+	data, err := util.ReadFileNoStat(p.path("cgroup"))
 	if err != nil {
 		return nil, err
 	}
diff --git a/vendor/github.com/prometheus/procfs/proc_stat.go b/vendor/github.com/prometheus/procfs/proc_stat.go
index 67ca0e9fb..8c7b6e80a 100644
--- a/vendor/github.com/prometheus/procfs/proc_stat.go
+++ b/vendor/github.com/prometheus/procfs/proc_stat.go
@@ -100,6 +100,15 @@ type ProcStat struct {
 	VSize uint
 	// Resident set size in pages.
 	RSS int
+	// Soft limit in bytes on the rss of the process.
+	RSSLimit uint64
+	// Real-time scheduling priority, a number in the range 1 to 99 for processes
+	// scheduled under a real-time policy, or 0, for non-real-time processes.
+	RTPriority uint
+	// Scheduling policy.
+	Policy uint
+	// Aggregated block I/O delays, measured in clock ticks (centiseconds).
+	DelayAcctBlkIOTicks uint64
 
 	proc fs.FS
 }
@@ -119,7 +128,8 @@ func (p Proc) Stat() (ProcStat, error) {
 	}
 
 	var (
-		ignore int
+		ignoreInt64  int64
+		ignoreUint64 uint64
 
 		s = ProcStat{PID: p.PID, proc: p.fs}
 		l = bytes.Index(data, []byte("("))
@@ -151,10 +161,28 @@ func (p Proc) Stat() (ProcStat, error) {
 		&s.Priority,
 		&s.Nice,
 		&s.NumThreads,
-		&ignore,
+		&ignoreInt64,
 		&s.Starttime,
 		&s.VSize,
 		&s.RSS,
+		&s.RSSLimit,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreUint64,
+		&ignoreInt64,
+		&ignoreInt64,
+		&s.RTPriority,
+		&s.Policy,
+		&s.DelayAcctBlkIOTicks,
 	)
 	if err != nil {
 		return ProcStat{}, err
diff --git a/vendor/github.com/prometheus/procfs/zoneinfo.go b/vendor/github.com/prometheus/procfs/zoneinfo.go
index 0b9bb6796..209e2ac98 100644
--- a/vendor/github.com/prometheus/procfs/zoneinfo.go
+++ b/vendor/github.com/prometheus/procfs/zoneinfo.go
@@ -99,7 +99,6 @@ func parseZoneinfo(zoneinfoData []byte) ([]Zoneinfo, error) {
 				continue
 			}
 			if strings.HasPrefix(strings.TrimSpace(line), "per-node stats") {
-				zoneinfoElement.Zone = ""
 				continue
 			}
 			parts := strings.Fields(strings.TrimSpace(line))