K
Q

Get current image of kubernetes deployment

8/22/2016

How can I use kubectl or the API to retrieve the current image for containers in a pod or deployment?

For example, in a deployment created with the below configuration, I want to retrieve the value eu.gcr.io/test0/brain:latest.

apiVersion: v1
   kind: Deployment
   metadata:
     name: flags
   spec:
     replicas: 6
     template:
       metadata:
      labels:
        app: flags
       spec:
         containers:
         - name: flags
           image: eu.gcr.io/test0/brain:latest
-- Andy Hume
kubectl
kubernetes

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8 Answers

4/21/2020

I often use this for gaining better image insight into a pod:

kubectl get   --output json pods \
  | jq '.items[] .status.containerStatuses[] | { "name": .name, "image": .image, "imageID": .imageID }'

Ouputs:

{
  "name": "app-admin",
  "image": "***docker_app-admin:v1",
  "imageID": "***docker_app-admin@sha256:2ce3208649e72faaf1fe8be59649de01b36f656866498b46790adaf154eefc6b"
}
-- Chris Stryczynski
Source: StackOverflow
7/5/2017

From kubectl 1.6 the -o wide option does this, so

kubectl get deployments -o wide

will show the current image in the output.

-- Daniel Perez
Source: StackOverflow
8/22/2016

You can use kubectl's jsonpath output option to achieve this:

kubectl get deployment flags -o=jsonpath='{$.spec.template.spec.containers[:1].image}'
-- Pixel Elephant
Source: StackOverflow
7/13/2017

to get just the image uri for all pods (in all namespaces, for example):

kubectl get pods --all-namespaces -o jsonpath="{..image}"

(see https://kubernetes.io/docs/tasks/access-application-cluster/list-all-running-container-images/ for more detail)

-- eversMcc
Source: StackOverflow
10/10/2018

You can list all deployments' image tag in a list:

kubectl get deployment -o=jsonpath="{range .items[*]}{'\n'}{.metadata.name}{':\t'}{range .spec.template.spec.containers[*]}{.image}{', '}{end}{
end}"

Sample output:

deployment-a:   docker-registry.com/group/image-a:v1,
deployment-b:   docker-registry.com/group/image-b:v2,
deployment-c:   docker-registry.com/group/image-c:v3,
deployment-d:   docker-registry.com/group/image-d:v4,
-- Evan Hu
Source: StackOverflow
4/12/2019

For a single deployment use this:

kubectl get deploy/deployment-name -o jsonpath="{..image}"

It can work for pod too

kubectl get pod/pod-name -o jsonpath="{..image}"
-- Shalkam
Source: StackOverflow
9/6/2016

the following worked for me:

kubectl get deployment -o=jsonpath='{$.items[:1].spec.template.spec.containers[:1].image}'

..my deployment config was clearly different (with 'items' element at the start) for some reason.

UPDATE: The 'items' element (which is just a list of deployment elements) will appear if just doing:

kubectl get deployment -o=json

whereas if I specify the deployment name, there'll be no items element in the returned json, e.g.:

kubectl get deployment [deploymentName] -o=json
-- eversMcc
Source: StackOverflow
9/13/2019

You can use,

kubectl get pod <pod_name> -o yaml| grep image:

And from deployment,

kubectl get deploy <deployment_name> -o yaml| grep image:

-- Sachin Arote
Source: StackOverflow