Kubernetes Cheat Sheet

When it comes to interacting with Kubernetes clusters on a daily basis, you’re going to need to turn to kubectl; the command line tool for Kubernetes. List all services
kubectl get services 
kubectl get svc
List everything
kubectl get all --all-namespaces
Describe service <name>
kubectl describe svc <name>
Get services sorted by name
kubectl get services –sort-by=.metadata.name
List all pods
kubectl get pods
Watch nodes continuously
kubectl get pods -w
Get version information
kubectl get version
Get cluster information
kubectl get cluster-info
Get the configuration
kubectl config view
Output information about a node
kubectl describe node <node-name>
List the replication controllers
kubectl get rc
List the replication controllers in specific <namespace>
kubectl get rc -n <namespace-name>
Describe replication controller <name>
kubectl describe rc <name>
Delete pod <name>
kubectl delete pod <name>
Delete replication controller <name>
kubectl delete rc <name>
Delete service <name>
kubectl delete svc <name>
Remove <node> from the cluster
kubectl delete node <name>
Show metrics for nodes
kubectl top nodes
Show metrics for pods
kubectl top pods
Watch the Kublet logs
watch -n 2 cat /var/log/kublet.log
Get logs from service <name>, optionally  selecting container <$container>
kubectl logs -f <name> [-c <$container>] 
execute <command> on <service>, optionally  selecting container <$container>
kubectl exec <service> <command> [-c <$container>]
Initialize your master node
kubeadm init
Join a node to your Kubernetes cluster
kubeadm join --token <token> <master-ip>:<master-port>
Create namespace <name>
kubectl create namespace <namespace>
Allow Kubernetes master nodes to run pods
kubectl taint nodes --all node-role.kubernetes.io/master
Reset current state
kubeadm reset
List all secrets
kubectl get secrets
Launch a pod called <name> ,using image <image-name>
kubectl run <name> --image=<image-name>
Create a service described in <manifest.yaml> file
kubectl create -f <manifest.yaml>
Validate yaml file with dry run
kubectl create --dry-run --validate -f sysaix.yaml
Scale replication controller
kubectl scale rc <name> --replicas=<count>
Stop all pods on specific pods
kubectl drain <n> --delete-local-data --force --ignore-deamonsets
Explain resource
kubectl explain pods
kubectl explain svc
Open a bash terminal in a pod
kubectl exec -it sysa'xpod sh
Check pod environment variables
kubectl exec sysaixpod env
Filter pods by label
kubectl get pods -l owner=emre
List statefulset
kubectl get sts
Scale statefulset
kubectl scale sts <stateful_set_name> --replicas=5
Delete statefulset only (not pods)
kubectl delete sts <stateful_set_name> --cascade=false
View all events
kubectl get events --all-namespaces


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