source <(kubectl completion bash)

kubectl config view
kubectl config current-context
kubectl config use-context CONTEXT

kubectl cluster-info
kubectl get componentstatuses
kubectl get events

# Logs
kubectl logs --namespace=NAMESPACE POD_NAME --container=CONTAINER_NAME
kubectl logs --previous POD_NAME --container=CONTAINER_NAME

# Namespaces
kubectl get namespace
kubectl create namespace NAMESPACE

kubectl create -f my-manifest.yaml            # create from file
kubectl create -f my1.yaml -f my2.yaml        # create from multiple files
kubectl create -f dir                         # create from files in dir

kubectl get pods                              # List all pods in the namespace
kubectl get pods --all-namespaces             # List all pods in all namespaces
kubectl get pods -o wide                      # List all pods in the namespace, with more details
kubectl get pods --include-uninitialized      # List all pods in the namespace, including uninitialized ones
kubectl get pods --watch                      # List all pods and watch changes
kubectl get pod my-pod                        # List a particular deployment

kubectl describe nodes my-node

kubectl get services --sort-by=.metadata.name # List Services Sorted by Name

# List pods Sorted by Restart Count
kubectl get pods --sort-by='.status.containerStatuses[0].restartCount'

# Get the version label of all pods with label app=cassandra
kubectl get pods --selector=app=cassandra -o jsonpath='{.items[*].metadata.labels.version}'

# Get all running pods in the namespace
kubectl get pods --field-selector=status.phase=Running

# Get ExternalIPs of all nodes
kubectl get nodes -o jsonpath='{.items[*].status.addresses[?(@.type=="ExternalIP")].address}'

# List Names of Pods that belong to Particular Deployment
# "jq" command useful for transformations that are too complex for jsonpath, it can be found at https://stedolan.github.io/jq/
sel=$(kubectl get deployment nginx-deployment -o=json | jq -j '.spec.selector.matchLabels | to_entries | map([.key,.value] | join("=")) | join(",")')
kubectl get pods -l=$sel -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}'

# Force replace, delete and then re-create the resource. Will cause a service outage.
kubectl replace --force -f ./pod.json

kubectl label node NODE KEY=VALUE

kubectl get nodes --show-labels

kubectl get nodes -o jsonpath="{$.items[*].metadata.labels}"

# Taint
kubectl taint node NODE_NAME LABEL_KEY=LABEL_VALUE:NoSchedule


# Drain and Uncordon
kubectl drain NODE_NAME
kubectl uncordon NODE_NAME

# API version
export ETCDCTL_API=3

# Certificates
export ETCDCTL_CACERT=/tmp/ca.pem
export ETCDCTL_CERT=/tmp/cert.pem
export ETCDCTL_KEY=/tmp/key.pem

# List etcd cluster members
etcdctl member list

# List resources
etcdctl ls
etcdctl ls /registry

# Backup
etcdctl --endpoints <ENDPOINT> snapshot save snapshotdb
etcdctl --write-out=table snapshot status snapshotdb

systemctl list-units | grep kube

systemctl status kube-apiserver

journalctl -u kubelet

minikube start
minikube ip
minikube version
minikube ssh

sudo ctr -n k8s.io containers list