Overview
The following is the most concise Kubernetes/K3S/K8S commands list.
General
kubectl create secret generic --from-literal=password=test123
kubectl get secrets
Pods & Nodes
kubectl get nodeskubectl describe nodes
kubectl apply -f yml
kubectl get deploy
kubectl get pods -o wide
kubectl exec -it node bash
kubectl get svc —watch
kubectl version -o yaml
kubectl get rs
kubectl rollout status
Kubectl rollout History
kubectl apply —record=true
Install inside nodes for basic networking stuff:
apt-get install iputils-ping curl dnsutils iproute2 -y
kubectl describe sc
kubectl get pvc
kubectl get pv
kubectl describe pv
kubectl get clusterrolebindings
kubectl get ns
openssl req -new -key Mia.key -out Mia.csr -subj “/CN=Mia/O=orgname”
convert to .crt
OpenSSL x509 -req -in Mia.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out Mia.crt -days 365
kubectl config set-credentials mia —client-certificate=mia.crt —client-key=mia.key
Logins:
kubectl config set-context mia —cluster=clustername —namespace=ns1 —user=mia
kubectl use-context mia
kubectl config current-context
kubectl version -o yaml
kubectl get rs
kubectl rollout status
Kubectl rollout History
kubectl apply —record=true
Install inside nodes for basic networking stuff:
apt-get install iputils-ping curl dnsutils iproute2 -y
Docker related
docker image build -t name something/something:0.1
docker image ls
docker login
docker image push image name
Storage related
kubectl get sckubectl describe sc
kubectl get pvc
kubectl get pv
kubectl describe pv
Scaling
kubectl get hpakubectl get clusterrolebindings
kubectl get ns
Certificates
openssl genrsa -out mia.key 2048openssl req -new -key Mia.key -out Mia.csr -subj “/CN=Mia/O=orgname”
convert to .crt
OpenSSL x509 -req -in Mia.csr -CA ca.crt -CAkey ca.key -CAcreateserial -out Mia.crt -days 365
kubectl config set-credentials mia —client-certificate=mia.crt —client-key=mia.key
Logins:
kubectl config set-context mia —cluster=clustername —namespace=ns1 —user=mia
kubectl use-context mia
kubectl config current-context
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