k8s/Admin snippets
Multiple pod operations
- Using xargs.
- Note: xargs
- The -t option prints each command that will be executed to the terminal.
- The -p command will print the command to be executed and prompt the user to run it.
- -I flag. This replaces occurrences of the argument with the argument passed to xargs e.g. -I % 'echo %;echo %'
- -n 1 , number of parameters to group on command line
kubectl get pods | grep etl | awk -F' ' '{print $1}' | xargs -t kubectl get pod
- Note: xargs
Launch container in k8s cluster
$ kubectl run -i --tty --rm my-container --image=debian /bin/bash # apt-get update && apt-get install openssh-client -y
dns lookup on minimalist pod with no dig / nslookup use getent
getent hosts www.google.com