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-rw-r--r--libpod/kube.go33
-rw-r--r--pkg/domain/infra/abi/generate.go8
-rw-r--r--test/e2e/generate_kube_test.go39
3 files changed, 66 insertions, 14 deletions
diff --git a/libpod/kube.go b/libpod/kube.go
index af3b0916e..e6b9b0477 100644
--- a/libpod/kube.go
+++ b/libpod/kube.go
@@ -1,9 +1,11 @@
package libpod
import (
+ "context"
"fmt"
"math/rand"
"os"
+ "reflect"
"sort"
"strconv"
"strings"
@@ -27,14 +29,14 @@ import (
// GenerateForKube takes a slice of libpod containers and generates
// one v1.Pod description that includes just a single container.
-func GenerateForKube(ctrs []*Container) (*v1.Pod, error) {
+func GenerateForKube(ctx context.Context, ctrs []*Container) (*v1.Pod, error) {
// Generate the v1.Pod yaml description
- return simplePodWithV1Containers(ctrs)
+ return simplePodWithV1Containers(ctx, ctrs)
}
// GenerateForKube takes a slice of libpod containers and generates
// one v1.Pod description
-func (p *Pod) GenerateForKube() (*v1.Pod, []v1.ServicePort, error) {
+func (p *Pod) GenerateForKube(ctx context.Context) (*v1.Pod, []v1.ServicePort, error) {
// Generate the v1.Pod yaml description
var (
ports []v1.ContainerPort //nolint
@@ -78,7 +80,7 @@ func (p *Pod) GenerateForKube() (*v1.Pod, []v1.ServicePort, error) {
servicePorts = containerPortsToServicePorts(ports)
hostNetwork = infraContainer.NetworkMode() == string(namespaces.NetworkMode(specgen.Host))
}
- pod, err := p.podWithContainers(allContainers, ports, hostNetwork)
+ pod, err := p.podWithContainers(ctx, allContainers, ports, hostNetwork)
if err != nil {
return nil, servicePorts, err
}
@@ -218,7 +220,7 @@ func containersToServicePorts(containers []v1.Container) []v1.ServicePort {
return sps
}
-func (p *Pod) podWithContainers(containers []*Container, ports []v1.ContainerPort, hostNetwork bool) (*v1.Pod, error) {
+func (p *Pod) podWithContainers(ctx context.Context, containers []*Container, ports []v1.ContainerPort, hostNetwork bool) (*v1.Pod, error) {
deDupPodVolumes := make(map[string]*v1.Volume)
first := true
podContainers := make([]v1.Container, 0, len(containers))
@@ -239,7 +241,7 @@ func (p *Pod) podWithContainers(containers []*Container, ports []v1.ContainerPor
isInit := ctr.IsInitCtr()
- ctr, volumes, _, err := containerToV1Container(ctr)
+ ctr, volumes, _, err := containerToV1Container(ctx, ctr)
if err != nil {
return nil, err
}
@@ -267,7 +269,7 @@ func (p *Pod) podWithContainers(containers []*Container, ports []v1.ContainerPor
deDupPodVolumes[vol.Name] = &vol
}
} else {
- _, _, infraDNS, err := containerToV1Container(ctr)
+ _, _, infraDNS, err := containerToV1Container(ctx, ctr)
if err != nil {
return nil, err
}
@@ -337,7 +339,7 @@ func newPodObject(podName string, annotations map[string]string, initCtrs, conta
// simplePodWithV1Containers is a function used by inspect when kube yaml needs to be generated
// for a single container. we "insert" that container description in a pod.
-func simplePodWithV1Containers(ctrs []*Container) (*v1.Pod, error) {
+func simplePodWithV1Containers(ctx context.Context, ctrs []*Container) (*v1.Pod, error) {
kubeCtrs := make([]v1.Container, 0, len(ctrs))
kubeInitCtrs := []v1.Container{}
kubeVolumes := make([]v1.Volume, 0)
@@ -355,7 +357,7 @@ func simplePodWithV1Containers(ctrs []*Container) (*v1.Pod, error) {
if !ctr.HostNetwork() {
hostNetwork = false
}
- kubeCtr, kubeVols, ctrDNS, err := containerToV1Container(ctr)
+ kubeCtr, kubeVols, ctrDNS, err := containerToV1Container(ctx, ctr)
if err != nil {
return nil, err
}
@@ -411,7 +413,7 @@ func simplePodWithV1Containers(ctrs []*Container) (*v1.Pod, error) {
// containerToV1Container converts information we know about a libpod container
// to a V1.Container specification.
-func containerToV1Container(c *Container) (v1.Container, []v1.Volume, *v1.PodDNSConfig, error) {
+func containerToV1Container(ctx context.Context, c *Container) (v1.Container, []v1.Volume, *v1.PodDNSConfig, error) {
kubeContainer := v1.Container{}
kubeVolumes := []v1.Volume{}
kubeSec, err := generateKubeSecurityContext(c)
@@ -463,6 +465,17 @@ func containerToV1Container(c *Container) (v1.Container, []v1.Volume, *v1.PodDNS
_, image := c.Image()
kubeContainer.Image = image
kubeContainer.Stdin = c.Stdin()
+ img, _, err := c.runtime.libimageRuntime.LookupImage(image, nil)
+ if err != nil {
+ return kubeContainer, kubeVolumes, nil, err
+ }
+ imgData, err := img.Inspect(ctx, false)
+ if err != nil {
+ return kubeContainer, kubeVolumes, nil, err
+ }
+ if reflect.DeepEqual(imgData.Config.Cmd, kubeContainer.Command) {
+ kubeContainer.Command = nil
+ }
kubeContainer.WorkingDir = c.WorkingDir()
kubeContainer.Ports = ports
diff --git a/pkg/domain/infra/abi/generate.go b/pkg/domain/infra/abi/generate.go
index 1e614ce58..081a2464b 100644
--- a/pkg/domain/infra/abi/generate.go
+++ b/pkg/domain/infra/abi/generate.go
@@ -107,7 +107,7 @@ func (ic *ContainerEngine) GenerateKube(ctx context.Context, nameOrIDs []string,
// Generate kube pods and services from pods.
if len(pods) >= 1 {
- pos, svcs, err := getKubePods(pods, options.Service)
+ pos, svcs, err := getKubePods(ctx, pods, options.Service)
if err != nil {
return nil, err
}
@@ -120,7 +120,7 @@ func (ic *ContainerEngine) GenerateKube(ctx context.Context, nameOrIDs []string,
// Generate the kube pods from containers.
if len(ctrs) >= 1 {
- po, err := libpod.GenerateForKube(ctrs)
+ po, err := libpod.GenerateForKube(ctx, ctrs)
if err != nil {
return nil, err
}
@@ -153,12 +153,12 @@ func (ic *ContainerEngine) GenerateKube(ctx context.Context, nameOrIDs []string,
}
// getKubePods returns kube pod and service YAML files from podman pods.
-func getKubePods(pods []*libpod.Pod, getService bool) ([][]byte, [][]byte, error) {
+func getKubePods(ctx context.Context, pods []*libpod.Pod, getService bool) ([][]byte, [][]byte, error) {
pos := [][]byte{}
svcs := [][]byte{}
for _, p := range pods {
- po, sp, err := p.GenerateForKube()
+ po, sp, err := p.GenerateForKube(ctx)
if err != nil {
return nil, nil, err
}
diff --git a/test/e2e/generate_kube_test.go b/test/e2e/generate_kube_test.go
index bf89a0708..cb556991c 100644
--- a/test/e2e/generate_kube_test.go
+++ b/test/e2e/generate_kube_test.go
@@ -792,6 +792,45 @@ var _ = Describe("Podman generate kube", func() {
Expect(containers[0].Args).To(Equal([]string{"10s"}))
})
+ It("podman generate kube - no command", func() {
+ session := podmanTest.Podman([]string{"create", "--name", "test", ALPINE})
+ session.WaitWithDefaultTimeout()
+ Expect(session).Should(Exit(0))
+
+ kube := podmanTest.Podman([]string{"generate", "kube", "test"})
+ kube.WaitWithDefaultTimeout()
+ Expect(kube).Should(Exit(0))
+
+ // Now make sure that the container's command is not set to the
+ // entrypoint and it's arguments to "10s".
+ pod := new(v1.Pod)
+ err := yaml.Unmarshal(kube.Out.Contents(), pod)
+ Expect(err).To(BeNil())
+
+ containers := pod.Spec.Containers
+ Expect(len(containers)).To(Equal(1))
+ Expect(len(containers[0].Command)).To(Equal(0))
+
+ cmd := []string{"echo", "hi"}
+ session = podmanTest.Podman(append([]string{"create", "--name", "test1", ALPINE}, cmd...))
+ session.WaitWithDefaultTimeout()
+ Expect(session).Should(Exit(0))
+
+ kube = podmanTest.Podman([]string{"generate", "kube", "test1"})
+ kube.WaitWithDefaultTimeout()
+ Expect(kube).Should(Exit(0))
+
+ // Now make sure that the container's command is not set to the
+ // entrypoint and it's arguments to "10s".
+ pod = new(v1.Pod)
+ err = yaml.Unmarshal(kube.Out.Contents(), pod)
+ Expect(err).To(BeNil())
+
+ containers = pod.Spec.Containers
+ Expect(len(containers)).To(Equal(1))
+ Expect(containers[0].Command).To(Equal(cmd))
+ })
+
It("podman generate kube - use entrypoint from image", func() {
// Build an image with an entrypoint.
containerfile := `FROM quay.io/libpod/alpine:latest
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-12-28 01:42:51 +0000