Imperatives!

Objets with no imperative commands

• persistent volume / persistent volume claim

• Network Policy

• Ingress

• Job/ Cron Job is not working in KODEKLOUD but working in SG Server. 1.11 vs 1.16

Setup commandlines

source <(kubectl completion bash | sed 's/kubectl/k/g' )

Passing any of the two Kubernetes Exam

Imperative commands

Watch Command

# Watch command does not use ALIAS.

watch kubectl <command>

# W is watch

k get jobs -w

Change NS

k config set-context --current --namespace=ns-kim

Pod

#Create

k run pod-kim --generator=run-pod/v1 --image=busybox -r=3 --limits='cpu=100m,memory=256M'

#Replace

k replace --force -f pod-kim

Run command

k exec -it kim-pod -c kim-container -- /bin/sh

k run nginx --generator=run-pod/v1 --image=nginx -- sleep 3600

k run busybox --generator=run-pod/v1 --image=busybox -- sleep 3600

# Not working k run busybox --generator=run-pod/v1 --image=busybox -- /sh/bash -c ls

k run busybox --generator=run-pod/v1 --image=busybox -- /bin/sh -c 'i=0; while true; do echo "$i: $(date)"; i=$((i+1)); sleep 1; done'

# CrashLoopBackOff Error will occur if --generator=run-pod/v1 is added

# SH and Bash are for deploy object only.

kubectl run busybox [--generator=run-pod/v1 dont add] --image=busybox -- /bin/sh -c 'ls'

Config Map

k create cm cm-kim --from-literal=firstname=kim,lastname=chi

Secret

k create secret generic kim-secret --from-file=/tmp

Service

k expose deploy -n ingress-space ingress-controller --type=NodePort --tcp=<port>:<targetpot> --name=ingress-kim

Deploy

k run deploy-kim --image=busybox --expose --port=80