How to list all containers in Kubernetes?

Question

How do i list all containers in Kubernetes cluster using kubectl?

Current documentation doesn't mention anything like 'container' resource.

kubectl get pod -o json

lists all pods which contains container descriptions. But is it possible to list containers as first class citizens?

score 14 · Accepted Answer · answered May 09 '18 at 18:52

14

This will get all container with the namespace in a pretty format:

kubectl get pods --all-namespaces -o=custom-columns=NameSpace:.metadata.namespace,NAME:.metadata.name,CONTAINERS:.spec.containers[*].name

answered May 09 '18 at 18:52

1

To prevent expansion of wildcards by my shell, I had to put a single quote around the `-o=` value, like `kubectl get pods --all-namespaces -o='custom-columns=NameSpace:.metadata.namespace,NAME:.metadata.name,CONTAINERS:.spec.containers[*].name'` – Steve Campbell Jan 20 '21 at 15:28

Mike · Answer 2 · 2017-09-14T10:58:46.693

4

When you don't use the namespace flag you are only looking in the default namespace. Try

kubectl get pod --all-namespaces

That will list all the pods in your cluster

You can filter via namespace like

kubectl get pod -n kube-system

To show all containers

kubectl get pods --all-namespaces -o jsonpath={.items[*].spec.containers[*].name}

edited Sep 14 '17 at 10:58

answered Sep 13 '17 at 16:16

Mike

Commands in the answer list pods. Is there any way how to list containers in a similar way? – czerny Sep 13 '17 at 16:24
1

you can do this `kubectl get pods --all-namespaces -o jsonpath={.items[*].spec.containers[*].name}` its not as nicely printed out – Mike Sep 13 '17 at 16:31
Thanks. Could you please copy it to the main answer since the question is really about containers, not pods? – czerny Sep 13 '17 at 17:39
done.. I made an edit – Mike Sep 14 '17 at 10:58

score 2 · Answer 3 · answered Sep 13 '17 at 16:16

2

kubectl get pods --all-namespaces

EDIT : damn, burned ! :)

answered Sep 13 '17 at 16:16

SBO

score 1 · Answer 4 · answered Apr 06 '20 at 02:45

1

kubectl describe pods <pod name>

This will list containers in pods of given name.

answered Apr 06 '20 at 02:45

Ankur Agarwal

Saeed Kazemi · Answer 5 · 2023-01-20T09:02:34.243

0

you can use -A shortcut instead of --all-namespaces

kubectl get pods -A

edited Jan 20 '23 at 09:02

answered Jan 20 '23 at 09:01

Saeed Kazemi

score 0 · Answer 6 · answered Dec 17 '18 at 14:49

You can list all containers in default namespace

kubectl get pods -o=jsonpath="{.items[*].spec.containers[*].name}"

Also you can user --namespace and --selector.

kubectl get pods --namespace default --selector app=nginx -o=jsonpath="{.items[*].spec.containers[*].name}"

Reference

6 Answers6