https://kubernetes.io/ru/docs/reference/kubectl/cheatsheet/

2022
https://www.learncloudnative.com/blog/2022-05-10-kubectl-tips

kubectl
    --kubeconfig=...

    completion -h

    ??? port-forward ???
        for "probros" local <-> remote ports
    config
        https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#-em-set-context-em-
        current-context
            show current context
        set-context
            --current --namespace kube-system.
        use-context
            minikube
    cluster-info
    api-resources
        !!! ??? get resources of all kinds (from api-server)
    explain
        ... doc on specific part of descr ...
        ex:
            deployment.spec.strategy
    auth
        can-i
          list pod
          get hr
    get
        namespace
            list namespaces
        nodes
        events
        po[ds]
            -o yaml
            [--namespace=kube-system]
            -l app=<name>
        rs[replicaset]
        svc
        ingress
        secrets
        cm, configmap
            <cm-name> -o yaml
        rs[replicaset]
        pv
            list pvc-s
    set
        # !!! this does not change already running PODs
        # in fact - we just change template
        image rs[replicaset] <rs-name> <container-name>=.../nginx:1.13
                                       '*=.../nxinx:1.13' # in case of single container
    logs
        deploy/<deployment-name> -c <container-name> 

    edit
        deployment
        ? what else ?
            edit ... stuff ... with platform default text editor
    run
        first-deployment --image=katacoda/docker-http-server --port=80
        -it --image=tutum/curl bash
    expose
        deployment first-deployment --port=80 --type=NodePort
    svc
        first-deployment
        export PORT=$(kubectl get svc first-deployment -o go-template='{{range.spec.ports}}{{if .nodePort}}{{.nodePort}}{{"\n"}}{{end}}{{end}}')

    create # can't re-create
        [--validate=false]
        -f <local-file.yaml>
        -f https://raw.githubusercontent.com/kubernetes/kubernetes/master/examples/guestbook/all-in-one/guestbook-all-in-one.yaml
        namespace <name>
            create a new <name> namespace

    apply # can apply multiple time
        -f https://k8s.io/docs/tutorials/stateless-application/deployment-scale.yaml


    delete
        all [--all] [-A]
        pod
        replicaset
        service <name>
        deployment <name>

    describe
        [--namespace=kube-system]
        [po]ds <name>
        [deploy]ment <name>
        [rs]replicaset <name>

    exec
        https://itsecforu.ru/2022/07/29/%e2%98%b8%ef%b8%8f-%d0%ba%d0%b0%d0%ba-%d0%b2%d1%8b%d0%bf%d0%be%d0%bb%d0%bd%d1%8f%d1%82%d1%8c-%d0%ba%d0%be%d0%bc%d0%b0%d0%bd%d0%b4%d1%8b-%d0%b2%d0%bd%d1%83%d1%82%d1%80%d0%b8-%d0%ba%d0%be%d0%bd%d1%82/
        <pod-name>
            [-ti]
            -- <cmd>

    wait
        https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#wait
        --for=condition=ready --timeout=60s pod/<pod-id> -n <node-id>

    diff
        https://github.com/kubernetes/enhancements/issues/491
    uncordon
        ???

    scale
        --replicas <N>
        replicaset <rs-name>

    rollout
        [undo|history] deployment <dpl-name>
        # ... revision-history-limit
        k explain deployment.spec.strategy
            field type - "RollingUpdate|Recreate"
        k explain deployment.spec.strategy.rollingUpdate
            maxSurge       - for how much we can increase ... up to desired state
            maxUnavailable - ... can use percents ...

    port-forward <svc> <p1:p2>
        -n<namespace>

    proxy
        ???