kubectl-images

🕸 Show container images used in the cluster.

kubectl-images makes use of the kubectl command. It first calls kubectl get pods to retrieve pods details and filters out the container image information of each pod, then prints out the final result in a table/json/yaml view.

🔰 Installation

Krew

$ kubectl krew install images
Updated the local copy of plugin index.
Installing plugin: images
Installed plugin: images
\
 | Use this plugin:
 | 	kubectl images
 | Documentation:
 | 	https://github.com/chenjiandongx/kubectl-images
/

Build from source code

$ git clone https://github.com/chenjiandongx/kubectl-images.git
$ cd kubectl-images && go build -ldflags="-s -w" -o kubectl-images . && mv ./kubectl-images /usr/local/bin
$ kubectl images --help

Download the binary

# Refer to the link: https://github.com/chenjiandongx/kubectl-images/releases
# Download the binary and then...
$ chmod +x kubectl-images && mv kubectl-images /usr/local/bin/
$ kubectl images --help

📝 Usage

~ 🐶 kubectl images --help
Show container images used in the cluster.

Usage:
  kubectl-images [podname-regex] [flags]

Examples:
  # display a table of all images in current namespace using podName/containerName/containerImage as columns.
  kubectl images

  # display images info in yaml format
  kubectl images -oy

  # display a table of images that match 'nginx' podname regex in 'dev' namespace using podName/containerImage as columns.
  kubectl images -n dev nginx -c 1,2

Flags:
  -A, --all-namespaces         if present, list images in all namespaces.
  -c, --columns string         specify the columns to display, separated by comma. [0:Namespace, 1:PodName, 2:ContainerName, 3:ContainerImage, 4:ImagePullPolicy, 5:ImageSize] (default "1,2,3")
  -C, --context string         The name of the kubeconfig context to use.
  -h, --help                   help for kubectl-images
  -k, --kubeconfig string      path to the kubeconfig file to use for CLI requests.
  -n, --namespace string       if present, list images in the specified namespace only. Use current namespace as fallback.
  -o, --output-format string   output format. [json(j)|table(t)|yaml(y)] (default "table")
  -u, --unique                 Unique images group by namespace/container/images/pullPolicy.
      --version                version for kubectl-images

🔖 Glances

~ 🐶 kubectl images -n kube-system -oy dns
- pod: coredns-78fcd69978-9pbjh
  container: coredns
  image: k8s.gcr.io/coredns/coredns:v1.8.4
- pod: coredns-78fcd69978-jh7m2
  container: coredns
  image: k8s.gcr.io/coredns/coredns:v1.8.4

~ 🐶 kubectl images -A -c 0,1,3
[Summary]: 2 namespaces, 11 pods, 11 containers and 9 different images
+-------------+----------------------------------------+--------------------------------------------+
|  Namespace  |                  Pod                   |                   Image                    |
+-------------+----------------------------------------+--------------------------------------------+
| kube-system | coredns-78fcd69978-9pbjh               | k8s.gcr.io/coredns/coredns:v1.8.4          |
+             +----------------------------------------+                                            +
|             | coredns-78fcd69978-jh7m2               |                                            |
+             +----------------------------------------+--------------------------------------------+
|             | etcd-docker-desktop                    | k8s.gcr.io/etcd:3.5.0-0                    |
+             +----------------------------------------+--------------------------------------------+
|             | kube-apiserver-docker-desktop          | k8s.gcr.io/kube-apiserver:v1.22.5          |
+             +----------------------------------------+--------------------------------------------+
|             | kube-controller-manager-docker-desktop | k8s.gcr.io/kube-controller-manager:v1.22.5 |
+             +----------------------------------------+--------------------------------------------+
|             | kube-proxy-vc7fv                       | k8s.gcr.io/kube-proxy:v1.22.5              |
+             +----------------------------------------+--------------------------------------------+
|             | kube-scheduler-docker-desktop          | k8s.gcr.io/kube-scheduler:v1.22.5          |
+             +----------------------------------------+--------------------------------------------+
|             | storage-provisioner                    | docker/desktop-storage-provisioner:v2.0    |
+             +----------------------------------------+--------------------------------------------+
|             | vpnkit-controller                      | docker/desktop-vpnkit-controller:v2.0      |
+-------------+----------------------------------------+--------------------------------------------+
| nginx       | nginx-deployment-66b6c48dd5-s9wv5      | nginx:1.14.2                               |
+             +----------------------------------------+                                            +
|             | nginx-deployment-66b6c48dd5-wmn9x      |                                            |
+-------------+----------------------------------------+--------------------------------------------+

~ 🐶 kubectl images -A -c 0,1,3 -u
[Summary]: 2 namespaces, 11 pods, 11 containers and 9 different images
+-------------+----------------------------------------+--------------------------------------------+
|  Namespace  |                  Pod                   |                   Image                    |
+-------------+----------------------------------------+--------------------------------------------+
| kube-system | coredns-78fcd69978-9pbjh               | k8s.gcr.io/coredns/coredns:v1.8.4          |                                      +
+             +----------------------------------------+--------------------------------------------+
|             | etcd-docker-desktop                    | k8s.gcr.io/etcd:3.5.0-0                    |
+             +----------------------------------------+--------------------------------------------+
|             | kube-apiserver-docker-desktop          | k8s.gcr.io/kube-apiserver:v1.22.5          |
+             +----------------------------------------+--------------------------------------------+
|             | kube-controller-manager-docker-desktop | k8s.gcr.io/kube-controller-manager:v1.22.5 |
+             +----------------------------------------+--------------------------------------------+
|             | kube-proxy-vc7fv                       | k8s.gcr.io/kube-proxy:v1.22.5              |
+             +----------------------------------------+--------------------------------------------+
|             | kube-scheduler-docker-desktop          | k8s.gcr.io/kube-scheduler:v1.22.5          |
+             +----------------------------------------+--------------------------------------------+
|             | storage-provisioner                    | docker/desktop-storage-provisioner:v2.0    |
+             +----------------------------------------+--------------------------------------------+
|             | vpnkit-controller                      | docker/desktop-vpnkit-controller:v2.0      |
+-------------+----------------------------------------+--------------------------------------------+
| nginx       | nginx-deployment-66b6c48dd5-s9wv5      | nginx:1.14.2                               |
+-------------+----------------------------------------+--------------------------------------------+

~ 🐶 kubectl images -c 0,1,2,3,4 -n nginx -oj
[
 {
  "namespace": "nginx",
  "pod": "nginx-deployment-66b6c48dd5-s9wv5",
  "container": "nginx",
  "image": "nginx:latest",
  "imagePullPolicy": "IfNotPresent"
 },
 {
  "namespace": "nginx",
  "pod": "nginx-deployment-66b6c48dd5-wmn9x",
  "container": "nginx",
  "image": "nginx:latest",
  "imagePullPolicy": "IfNotPresent"
 }
]

📃 License

MIT ©chenjiandongx