Cordon a node

Mark node as unschedulable — no new pods land here

kubectl cordon <node>
tool
kubectl73 commands
tags
nodes

More kubectl commands

  • Drain a node
    kubectl drain <node> --ignore-daemonsets --delete-emptydir-data

    Gracefully evict all pods before maintenance

  • Edit a live resource
    kubectl edit deployment/<name> -n <ns>

    Open resource in $EDITOR; changes applied on save

  • Verify RBAC permissions
    kubectl auth can-i list pods --as=system:serviceaccount:<ns>:<sa> -n <ns>

    Check what a ServiceAccount is allowed to do

  • Get resource with custom columns
    kubectl get pods -n <ns> -o custom-columns='NAME:.metadata.name,NODE:.spec.nodeName,STATUS:.status.phase'

    Print only the fields you care about without jq

  • Patch resource field
    kubectl patch deployment <name> -n <ns> -p '{"spec":{"replicas":2}}'

    Inline JSON patch without editing the whole manifest

all 73 kubectl commands