Quick commands

Command	Description	Example
`kubectl auth can-i`	Check whether an action is allowed	`kubectl auth can-i create pods --all-namespaces`
`kubectl get pods POD_NAME_HERE -o jsonpath='{.spec.containers[*].name}'`	List all contains in a pod

kubectl

kubectl patch uses json patch, which means it’s possible to use replace, add, and remove operations.

This will replace the expiry of the zeroth index user in .spec.users to 2022-01-17.

kubectl patch pod pod-tgmgb --type='json' -p '[{"op":"replace","path":"/spec/users/0/expiry","value":"2022-01-17"}]'

This will add a foo field onto the zeroth index user in .spec.users of value bar

kubectl patch pod pod-tgmgb --type='json' -p '[{"op":"add","path":"/spec/users/0/foo","value":"bar"}]'

This will remove the zeroth index user in .spec.users

kubectl patch pod pod-tgmgb --type='json' -p '[{"op":"remove","path":"/spec/users/0"}]'