List all namespaces in the cluster
kubectl get namespaces
List all services in the namespace
kubectl get services
List all pods in all namespaces
kubectl get pods --all-namespaces
List all pods in the namespace, with more details
kubectl get pods -o wide
List a particular replication controller
kubectl get rc <rc-name>
List a particular RC
kubectl get replicationcontroller <rc-name>
List a particular node with verbose output
kubectl describe nodes <node-name>
List a particular pod with verbose output
kubectl describe pods <pod-name> kubectl describe pods/<pod-name> # Equivalent to previous
Lists pods created by using common prefix
kubectl describe pods <rc-name>
List services sorted by name
kubectl get services --sort-by=.metadata.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 rc -o 'jsonpath={.items[*].metadata.labels.version}'
Get ExternalIPs of all nodes
kubectl get nodes -o jsonpath='{.items[*].status.addresses[?(@.type=="ExternalIP")].address}'
List names of pods that belong to Particular RC
# "jq" command useful for transformations that are too complex for jsonpath
sel=$(./kubectl get rc <rc-name> --output=json | jq -j '.spec.selector | to_entries | .[] | "\(.key)=\(.value),"')
sel=${sel%?} # Remove trailing comma
pods=$(kubectl get pods --selector=$sel --output=jsonpath={.items..metadata.name})`
Check which nodes are ready
kubectl get nodes -o jsonpath='{range .items[*]}{@.metadata.name}:{range @.status.conditions[*]}{@.type}={@.status};{end}{end}'| tr ';' "\n" | grep "Ready=True"