kubernetes: pod.status.containerStatuses displayed image name incorrectly when image has multiple tags on the node

What happened: image name in pod.status.containerStatuses is different from pod.spec.containers via kubectl get pod -o yaml What you expected to happen: image name in should be the same in pod.status.containerStatuses and pod.spec.containers How to reproduce it (as minimally and precisely as possible):

give a new tag to a image via docker tag (same image with different tag)
start a deployment using that image with original tag
show pod yaml via kubectl get pod -o yaml <pod name> we will see the image name in pod.status.containerStatuses is the new tag rather than the original tag we have set in the spec

Environment:

Kubernetes version (use kubectl version):

Client Version: version.Info{Major:"1", Minor:"10+", GitVersion:"v1.10.5-tke.3", GitCommit:"53e244be925234190938376fe8637189b6caf125", GitTreeState:"clean", BuildDate:"2018-12-04T04:10:03Z", GoVersion:"go1.9.3", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"10+", GitVersion:"v1.10.5-qcloud-rev1", GitCommit:"2e618fb4fb02e6934ca26ef3a9b4683ca1a7c1a2", GitTreeState:"clean", BuildDate:"2018-09-21T04:52:05Z", GoVersion:"go1.9.3", Compiler:"gc", Platform:"linux/amd64"}

Cloud provider or hardware configuration:
OS (e.g. from /etc/os-release):

NAME="Ubuntu"
VERSION="16.04.1 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.1 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
UBUNTU_CODENAME=xenial

Kernel (e.g. uname -a):

Linux VM-0-3-ubuntu 4.4.0-104-generic #127-Ubuntu SMP Mon Dec 11 12:16:42 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Install tools:

$ docker version
Client:
 Version:	17.12.1-ce
 API version:	1.35
 Go version:	go1.9.4
 Git commit:	7390fc6
 Built:	Tue Feb 27 22:13:43 2018
 OS/Arch:	linux/amd64

Server:
 Engine:
  Version:	17.12.1-ce
  API version:	1.35 (minimum version 1.12)
  Go version:	go1.9.4
  Git commit:	7390fc6
  Built:	Tue Feb 27 22:20:43 2018
  OS/Arch:	linux/amd64
  Experimental:	false

Others:

About this issue

Original URL
State: closed
Created 5 years ago
Reactions: 5
Comments: 17 (8 by maintainers)

Most upvoted comments

https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/dockershim/docker_container.go#L388

If the same ID docker image has many tags, kubelet just pick the first one.


	imageName := r.Config.Image
	if len(ir.RepoTags) > 0 {
		imageName = ir.RepoTags[0]
	}
	status := &runtimeapi.ContainerStatus{
		Id:          r.ID,
		Metadata:    metadata,
		Image:       &runtimeapi.ImageSpec{Image: imageName},
		ImageRef:    imageID,
		Mounts:      mounts,
		ExitCode:    exitCode,
		State:       state,
		CreatedAt:   ct,
		StartedAt:   st,
		FinishedAt:  ft,
		Reason:      reason,
		Message:     message,
		Labels:      labels,
		Annotations: annotations,
		LogPath:     r.Config.Labels[containerLogPathLabelKey],
	}
	return &runtimeapi.ContainerStatusResponse{Status: status}, nil
}

yowenter on Feb 15, 2019