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authorOpenShift Merge Robot <openshift-merge-robot@users.noreply.github.com>2019-01-16 12:44:10 +0100
committerGitHub <noreply@github.com>2019-01-16 12:44:10 +0100
commitd8683219d2ac5fd9a0aa271ef9d94cebe0c2adc0 (patch)
treed0546c3da5d6aad67d3543cb4d6fc4faa6620735 /libpod
parentb3abe2c28941143d520e03c581b0ee3c3fafc087 (diff)
parent3b37101c6e3679399a5ed05bb2e109df0e0032e8 (diff)
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Merge pull request #2079 from giuseppe/multiple-runtimes
oci: allow to define multiple OCI runtimes
Diffstat (limited to 'libpod')
-rw-r--r--libpod/container.go3
-rw-r--r--libpod/info.go6
-rw-r--r--libpod/oci.go6
-rw-r--r--libpod/options.go6
-rw-r--r--libpod/runtime.go77
-rw-r--r--libpod/runtime_ctr.go2
6 files changed, 65 insertions, 35 deletions
diff --git a/libpod/container.go b/libpod/container.go
index ca83bbffe..95f7a2972 100644
--- a/libpod/container.go
+++ b/libpod/container.go
@@ -350,6 +350,9 @@ type ContainerConfig struct {
PostConfigureNetNS bool `json:"postConfigureNetNS"`
+ // OCIRuntime used to create the container
+ OCIRuntime string `json:"runtime,omitempty"`
+
// ExitCommand is the container's exit command.
// This Command will be executed when the container exits
ExitCommand []string `json:"exitCommand,omitempty"`
diff --git a/libpod/info.go b/libpod/info.go
index a98f93897..191ce6810 100644
--- a/libpod/info.go
+++ b/libpod/info.go
@@ -4,7 +4,6 @@ import (
"bufio"
"bytes"
"fmt"
- "github.com/containers/buildah"
"io/ioutil"
"os"
"runtime"
@@ -12,6 +11,7 @@ import (
"strings"
"time"
+ "github.com/containers/buildah"
"github.com/containers/libpod/pkg/rootless"
"github.com/containers/libpod/pkg/util"
"github.com/containers/libpod/utils"
@@ -184,12 +184,12 @@ func (r *Runtime) GetConmonVersion() (string, error) {
// GetOCIRuntimePath returns the path to the OCI Runtime Path the runtime is using
func (r *Runtime) GetOCIRuntimePath() string {
- return r.ociRuntimePath
+ return r.ociRuntimePath.Paths[0]
}
// GetOCIRuntimeVersion returns a string representation of the oci runtimes version
func (r *Runtime) GetOCIRuntimeVersion() (string, error) {
- output, err := utils.ExecCmd(r.ociRuntimePath, "--version")
+ output, err := utils.ExecCmd(r.ociRuntimePath.Paths[0], "--version")
if err != nil {
return "", err
}
diff --git a/libpod/oci.go b/libpod/oci.go
index 7a908db2e..4092657f8 100644
--- a/libpod/oci.go
+++ b/libpod/oci.go
@@ -75,10 +75,10 @@ type syncInfo struct {
}
// Make a new OCI runtime with provided options
-func newOCIRuntime(name string, path string, conmonPath string, conmonEnv []string, cgroupManager string, tmpDir string, logSizeMax int64, noPivotRoot bool, reservePorts bool) (*OCIRuntime, error) {
+func newOCIRuntime(oruntime OCIRuntimePath, conmonPath string, conmonEnv []string, cgroupManager string, tmpDir string, logSizeMax int64, noPivotRoot bool, reservePorts bool) (*OCIRuntime, error) {
runtime := new(OCIRuntime)
- runtime.name = name
- runtime.path = path
+ runtime.name = oruntime.Name
+ runtime.path = oruntime.Paths[0]
runtime.conmonPath = conmonPath
runtime.conmonEnv = conmonEnv
runtime.cgroupManager = cgroupManager
diff --git a/libpod/options.go b/libpod/options.go
index 319e1f6c6..d965c058e 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -137,17 +137,17 @@ func WithStateType(storeType RuntimeStateStore) RuntimeOption {
}
// WithOCIRuntime specifies an OCI runtime to use for running containers.
-func WithOCIRuntime(runtimePath string) RuntimeOption {
+func WithOCIRuntime(runtime string) RuntimeOption {
return func(rt *Runtime) error {
if rt.valid {
return ErrRuntimeFinalized
}
- if runtimePath == "" {
+ if runtime == "" {
return errors.Wrapf(ErrInvalidArg, "must provide a valid path")
}
- rt.config.RuntimePath = []string{runtimePath}
+ rt.config.OCIRuntime = runtime
return nil
}
diff --git a/libpod/runtime.go b/libpod/runtime.go
index c9471247c..5ff8b30f6 100644
--- a/libpod/runtime.go
+++ b/libpod/runtime.go
@@ -86,7 +86,7 @@ type Runtime struct {
imageContext *types.SystemContext
ociRuntime *OCIRuntime
netPlugin ocicni.CNIPlugin
- ociRuntimePath string
+ ociRuntimePath OCIRuntimePath
conmonPath string
valid bool
lock sync.RWMutex
@@ -96,6 +96,14 @@ type Runtime struct {
configuredFrom *runtimeConfiguredFrom
}
+// OCIRuntimePath contains information about an OCI runtime.
+type OCIRuntimePath struct {
+ // Name of the runtime to refer to by the --runtime flag
+ Name string `toml:"name"`
+ // Paths to check for this executable
+ Paths []string `toml:"paths"`
+}
+
// RuntimeConfig contains configuration options used to set up the runtime
type RuntimeConfig struct {
// StorageConfig is the configuration used by containers/storage
@@ -118,10 +126,10 @@ type RuntimeConfig struct {
// cause conflicts in containers/storage
// As such this is not exposed via the config file
StateType RuntimeStateStore `toml:"-"`
- // RuntimePath is the path to OCI runtime binary for launching
- // containers
- // The first path pointing to a valid file will be used
- RuntimePath []string `toml:"runtime_path"`
+ // OCIRuntime is the OCI runtime to use.
+ OCIRuntime string `toml:"runtime"`
+ // OCIRuntimes are the set of configured OCI runtimes (default is runc)
+ OCIRuntimes map[string][]string `toml:"runtimes"`
// ConmonPath is the path to the Conmon binary used for managing
// containers
// The first path pointing to a valid file will be used
@@ -213,14 +221,17 @@ var (
StorageConfig: storage.StoreOptions{},
ImageDefaultTransport: DefaultTransport,
StateType: BoltDBStateStore,
- RuntimePath: []string{
- "/usr/bin/runc",
- "/usr/sbin/runc",
- "/usr/local/bin/runc",
- "/usr/local/sbin/runc",
- "/sbin/runc",
- "/bin/runc",
- "/usr/lib/cri-o-runc/sbin/runc",
+ OCIRuntime: "runc",
+ OCIRuntimes: map[string][]string{
+ "runc": {
+ "/usr/bin/runc",
+ "/usr/sbin/runc",
+ "/usr/local/bin/runc",
+ "/usr/local/sbin/runc",
+ "/sbin/runc",
+ "/bin/runc",
+ "/usr/lib/cri-o-runc/sbin/runc",
+ },
},
ConmonPath: []string{
"/usr/libexec/podman/conmon",
@@ -414,8 +425,9 @@ func NewRuntimeFromConfig(configPath string, options ...RuntimeOption) (runtime
runtime.config = new(RuntimeConfig)
runtime.configuredFrom = new(runtimeConfiguredFrom)
- // Set two fields not in the TOML config
+ // Set three fields not in the TOML config
runtime.config.StateType = defaultRuntimeConfig.StateType
+ runtime.config.OCIRuntime = defaultRuntimeConfig.OCIRuntime
runtime.config.StorageConfig = storage.StoreOptions{}
// Check to see if the given configuration file exists
@@ -453,22 +465,35 @@ func NewRuntimeFromConfig(configPath string, options ...RuntimeOption) (runtime
func makeRuntime(runtime *Runtime) (err error) {
// Find a working OCI runtime binary
foundRuntime := false
- for _, path := range runtime.config.RuntimePath {
- stat, err := os.Stat(path)
- if err != nil {
- continue
- }
- if stat.IsDir() {
- continue
- }
+ // If runtime is an absolute path, then use it as it is.
+ if runtime.config.OCIRuntime[0] == '/' {
foundRuntime = true
- runtime.ociRuntimePath = path
- break
+ runtime.ociRuntimePath = OCIRuntimePath{Name: filepath.Base(runtime.config.OCIRuntime), Paths: []string{runtime.config.OCIRuntime}}
+ } else {
+ // If not, look it up in the configuration.
+ paths := runtime.config.OCIRuntimes[runtime.config.OCIRuntime]
+ if paths != nil {
+ for _, path := range paths {
+ stat, err := os.Stat(path)
+ if err != nil {
+ if os.IsNotExist(err) {
+ continue
+ }
+ return errors.Wrapf(err, "cannot stat %s", path)
+ }
+ if !stat.Mode().IsRegular() {
+ continue
+ }
+ foundRuntime = true
+ runtime.ociRuntimePath = OCIRuntimePath{Name: runtime.config.OCIRuntime, Paths: []string{path}}
+ break
+ }
+ }
}
if !foundRuntime {
return errors.Wrapf(ErrInvalidArg,
"could not find a working binary (configured options: %v)",
- runtime.config.RuntimePath)
+ runtime.config.OCIRuntimes)
}
// Find a working conmon binary
@@ -619,7 +644,7 @@ func makeRuntime(runtime *Runtime) (err error) {
}
// Make an OCI runtime to perform container operations
- ociRuntime, err := newOCIRuntime("runc", runtime.ociRuntimePath,
+ ociRuntime, err := newOCIRuntime(runtime.ociRuntimePath,
runtime.conmonPath, runtime.config.ConmonEnvVars,
runtime.config.CgroupManager, runtime.config.TmpDir,
runtime.config.MaxLogSize, runtime.config.NoPivotRoot,
diff --git a/libpod/runtime_ctr.go b/libpod/runtime_ctr.go
index ab79fe5fb..68599fe6d 100644
--- a/libpod/runtime_ctr.go
+++ b/libpod/runtime_ctr.go
@@ -62,6 +62,8 @@ func (r *Runtime) newContainer(ctx context.Context, rSpec *spec.Spec, options ..
ctr.config.StopTimeout = CtrRemoveTimeout
+ ctr.config.OCIRuntime = r.config.OCIRuntime
+
// Set namespace based on current runtime namespace
// Do so before options run so they can override it
if r.config.Namespace != "" {