kubectl exec into a container without using the random guid at the end of the pod name

user_6611672 0
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To exec into a container in a pod, I use the following two commands (note the template flag in the first command trims the output to print just the name of the pods):

$ kubectl get pods --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'
app-api-6421cdf4fd-x9tbk
app-worker-432f86f54-fknxw
app-frontend-87dd65d49c-6b4mn
app-rabbit-413632c874-s2ptw

$ kubectl exec -it app-api-6421cdf4fd-x9tbk -- bash

It would be nice to exec into the container without having to discover the random guid at the end of the pod name every single time. How can I do this?

kubectl kubernetes
3 Answers

You can exec into a pod using the deployment
You can use the following command:

kubectl exec -it deploy/<deployment-name> -- bash
user_142468890

Suppose you have a Deployment with the name myadmin and namespace demo. After deploy, you can exec into the deployment's pod by running the below command:

$ export id=( kubectl get pod -n demo | grep 'myadmin' | awk 'END {print $1}' | xargs echo) && kubectl -n demo exec -it $id -- bash
user_119742530

I believe you expect this.

(sed 's/pod\///' is used below because kubectl get pod -o name gives you names like pod/rabbitmq-0 and you should cut first part)

kubectl exec -it $(kubectl get pod -o name |  sed 's/pod\///' | grep api) -- bash

Similar to previous one you can use any known commands to find and sort needed objects. Providing version from your initial question

kubectl exec -it $(kubectl get pod --template '{{range .items}}{{.metadata.name}}{{"\n"}}{{end}}'| grep api) -- bash
user_99290150
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