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authorPeter Hunt <pehunt@redhat.com>2020-01-03 10:15:03 -0500
committerPeter Hunt <pehunt@redhat.com>2020-01-03 13:27:17 -0500
commitb6792b61de7706ad6019a98db23c2a62753b1bde (patch)
tree75c4b9c1f428103b1b52565fcbba9607e186272a
parent50b44463760a224cd72e0920f03ed2041689bc63 (diff)
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play kube: make seccomp handling better conform to k8s
Add flag --seccomp-profile-root in play kube to allow users to specify where to look for seccomp profiles update tests Signed-off-by: Peter Hunt <pehunt@redhat.com>
-rw-r--r--cmd/podman/cliconfig/config.go13
-rw-r--r--cmd/podman/play_kube.go3
-rw-r--r--completions/bash/podman1
-rw-r--r--docs/source/markdown/podman-play-kube.1.md4
-rw-r--r--pkg/adapter/pods.go20
-rw-r--r--test/e2e/play_kube_test.go11
6 files changed, 31 insertions, 21 deletions
diff --git a/cmd/podman/cliconfig/config.go b/cmd/podman/cliconfig/config.go
index e81756808..282d90d0b 100644
--- a/cmd/podman/cliconfig/config.go
+++ b/cmd/podman/cliconfig/config.go
@@ -308,12 +308,13 @@ type HealthCheckValues struct {
type KubePlayValues struct {
PodmanCommand
- Authfile string
- CertDir string
- Creds string
- Quiet bool
- SignaturePolicy string
- TlsVerify bool
+ Authfile string
+ CertDir string
+ Creds string
+ Quiet bool
+ SignaturePolicy string
+ TlsVerify bool
+ SeccompProfileRoot string
}
type PodCreateValues struct {
diff --git a/cmd/podman/play_kube.go b/cmd/podman/play_kube.go
index fc9f2d5b6..2028d2ef4 100644
--- a/cmd/podman/play_kube.go
+++ b/cmd/podman/play_kube.go
@@ -28,6 +28,8 @@ var (
},
Example: `podman play kube demo.yml`,
}
+ // https://kubernetes.io/docs/reference/command-line-tools-reference/kubelet/
+ defaultSeccompRoot = "/var/lib/kubelet/seccomp"
)
func init() {
@@ -46,6 +48,7 @@ func init() {
flags.StringVar(&playKubeCommand.CertDir, "cert-dir", "", "`Pathname` of a directory containing TLS certificates and keys")
flags.StringVar(&playKubeCommand.SignaturePolicy, "signature-policy", "", "`Pathname` of signature policy file (not usually used)")
flags.BoolVar(&playKubeCommand.TlsVerify, "tls-verify", true, "Require HTTPS and verify certificates when contacting registries")
+ flags.StringVar(&playKubeCommand.SeccompProfileRoot, "seccomp-profile-root", defaultSeccompRoot, "Directory path for seccomp profiles")
markFlagHidden(flags, "signature-policy")
}
}
diff --git a/completions/bash/podman b/completions/bash/podman
index 40be0018b..c23d156bc 100644
--- a/completions/bash/podman
+++ b/completions/bash/podman
@@ -2672,6 +2672,7 @@ _podman_play_kube() {
--quiet
-q
--tls-verify
+ --seccomp-profile-root
"
case "$cur" in
diff --git a/docs/source/markdown/podman-play-kube.1.md b/docs/source/markdown/podman-play-kube.1.md
index 2ac860a32..2367ff7fe 100644
--- a/docs/source/markdown/podman-play-kube.1.md
+++ b/docs/source/markdown/podman-play-kube.1.md
@@ -40,6 +40,10 @@ value can be entered. The password is entered without echo.
Suppress output information when pulling images
+**--seccomp-profile-root**=*path*
+
+Directory path for seccomp profiles (default: "/var/lib/kubelet/seccomp"). (Not available for remote commands)
+
**--tls-verify**=*true|false*
Require HTTPS and verify certificates when contacting registries (default: true). If explicitly set to true,
diff --git a/pkg/adapter/pods.go b/pkg/adapter/pods.go
index a726153c0..5891c361f 100644
--- a/pkg/adapter/pods.go
+++ b/pkg/adapter/pods.go
@@ -8,6 +8,7 @@ import (
"io"
"io/ioutil"
"os"
+ "path/filepath"
"strings"
"github.com/containers/buildah/pkg/parse"
@@ -597,7 +598,7 @@ func (r *LocalRuntime) PlayKubeYAML(ctx context.Context, c *cliconfig.KubePlayVa
volumes[volume.Name] = hostPath.Path
}
- seccompPaths, err := initializeSeccompPaths(podYAML.ObjectMeta.Annotations)
+ seccompPaths, err := initializeSeccompPaths(podYAML.ObjectMeta.Annotations, c.SeccompProfileRoot)
if err != nil {
return nil, err
}
@@ -847,7 +848,8 @@ func (k *kubeSeccompPaths) findForContainer(ctrName string) string {
// initializeSeccompPaths takes annotations from the pod object metadata and finds annotations pertaining to seccomp
// it parses both pod and container level
-func initializeSeccompPaths(annotations map[string]string) (*kubeSeccompPaths, error) {
+// if the annotation is of the form "localhost/%s", the seccomp profile will be set to profileRoot/%s
+func initializeSeccompPaths(annotations map[string]string, profileRoot string) (*kubeSeccompPaths, error) {
seccompPaths := &kubeSeccompPaths{containerPaths: make(map[string]string)}
var err error
if annotations != nil {
@@ -863,7 +865,7 @@ func initializeSeccompPaths(annotations map[string]string) (*kubeSeccompPaths, e
return nil, errors.Errorf("Invalid seccomp path: %s", prefixAndCtr[0])
}
- path, err := verifySeccompPath(seccomp)
+ path, err := verifySeccompPath(seccomp, profileRoot)
if err != nil {
return nil, err
}
@@ -872,7 +874,7 @@ func initializeSeccompPaths(annotations map[string]string) (*kubeSeccompPaths, e
podSeccomp, ok := annotations[v1.SeccompPodAnnotationKey]
if ok {
- seccompPaths.podPath, err = verifySeccompPath(podSeccomp)
+ seccompPaths.podPath, err = verifySeccompPath(podSeccomp, profileRoot)
} else {
seccompPaths.podPath, err = libpod.DefaultSeccompPath()
}
@@ -885,7 +887,7 @@ func initializeSeccompPaths(annotations map[string]string) (*kubeSeccompPaths, e
// verifySeccompPath takes a path and checks whether it is a default, unconfined, or a path
// the available options are parsed as defined in https://kubernetes.io/docs/concepts/policy/pod-security-policy/#seccomp
-func verifySeccompPath(path string) (string, error) {
+func verifySeccompPath(path string, profileRoot string) (string, error) {
switch path {
case v1.DeprecatedSeccompProfileDockerDefault:
fallthrough
@@ -894,13 +896,9 @@ func verifySeccompPath(path string) (string, error) {
case "unconfined":
return path, nil
default:
- // TODO we have an inconsistency here
- // k8s parses `localhost/<path>` which is found at `<seccomp_root>`
- // we currently parse `localhost:<seccomp_root>/<path>
- // to fully conform, we need to find a good location for the seccomp root
- parts := strings.Split(path, ":")
+ parts := strings.Split(path, "/")
if parts[0] == "localhost" {
- return parts[1], nil
+ return filepath.Join(profileRoot, parts[1]), nil
}
return "", errors.Errorf("invalid seccomp path: %s", path)
}
diff --git a/test/e2e/play_kube_test.go b/test/e2e/play_kube_test.go
index 29c60d7ac..89a5eddf4 100644
--- a/test/e2e/play_kube_test.go
+++ b/test/e2e/play_kube_test.go
@@ -358,10 +358,11 @@ var _ = Describe("Podman generate kube", func() {
ctrAnnotation := "container.seccomp.security.alpha.kubernetes.io/" + defaultCtrName
ctr := getCtr(withCmd([]string{"pwd"}))
- err = generateKubeYaml(getPod(withCtr(ctr), withAnnotation(ctrAnnotation, "localhost:"+jsonFile)), kubeYaml)
+ err = generateKubeYaml(getPod(withCtr(ctr), withAnnotation(ctrAnnotation, "localhost/"+filepath.Base(jsonFile))), kubeYaml)
Expect(err).To(BeNil())
- kube := podmanTest.Podman([]string{"play", "kube", kubeYaml})
+ // CreateSeccompJson will put the profile into podmanTest.TempDir. Use --seccomp-profile-root to tell play kube where to look
+ kube := podmanTest.Podman([]string{"play", "kube", "--seccomp-profile-root", podmanTest.TempDir, kubeYaml})
kube.WaitWithDefaultTimeout()
Expect(kube.ExitCode()).To(Equal(0))
@@ -378,13 +379,15 @@ var _ = Describe("Podman generate kube", func() {
fmt.Println(err)
Skip("Failed to prepare seccomp.json for test.")
}
+ defer os.Remove(jsonFile)
ctr := getCtr(withCmd([]string{"pwd"}))
- err = generateKubeYaml(getPod(withCtr(ctr), withAnnotation("seccomp.security.alpha.kubernetes.io/pod", "localhost:"+jsonFile)), kubeYaml)
+ err = generateKubeYaml(getPod(withCtr(ctr), withAnnotation("seccomp.security.alpha.kubernetes.io/pod", "localhost/"+filepath.Base(jsonFile))), kubeYaml)
Expect(err).To(BeNil())
- kube := podmanTest.Podman([]string{"play", "kube", kubeYaml})
+ // CreateSeccompJson will put the profile into podmanTest.TempDir. Use --seccomp-profile-root to tell play kube where to look
+ kube := podmanTest.Podman([]string{"play", "kube", "--seccomp-profile-root", podmanTest.TempDir, kubeYaml})
kube.WaitWithDefaultTimeout()
Expect(kube.ExitCode()).To(Equal(0))