Tổng hợp các câu lệnh hay dùng nhất Kubenetes | Kubernetes Cheat Sheet

Tổng hợp các câu lệnh hay dùng nhất Kubenetes | Kubernetes Cheat Sheet

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3 min read

Bài viết được mình sưu tầm với mục đích chia sẻ kiến thức cho mọi người, và không nhằm mục đích thương mại. Vì bài viết có nhiều từ tiếng anh chuyên môn nên mình sẽ để nguyên văn của tác giả để mọi người có thể hiểu dễ hơn.

Cluster Management

  1. Display endpoint details for the cluster’s master and services.

    kubectl cluster-info
    
  2. Show the Kubernetes version that is active on the server and client

    kubectl version
    
  3. Get the cluster’s configuration

    kubectl config view
    
  4. List the available API resources

    kubectl api-resources
    
  5. List everything

    kubectl get all --all-namespaces
    

Node Management

  1. List the nodes

    kubectl get node
    
  2. Update the taints on nodes

    kubectl taint node <node_name>
    
  3. Delete a node

    kubectl delete node <node_name>
    

Pod Management

  1. List pods

    kubectl get pod
    
  2. Delete a pod

    kubectl delete pod <pod_name>
    
  3. See detailed state of a pods

    kubectl describe pod <pod_name>
    
  4. Create a pod

    kubectl create pod <pod_name>
    
  5. Run a command for a container inside a pod

    kubectl exec <pod_name> -c <container_name> <command>
    
  6. Get interactive shell on a pod

    kubectl exec -it <pod_name> /bin/sh
    
  7. See resource usage (CPU/Memory/Storage) for pods

    kubectl top pod
    
  8. Add/update the annotations of a pod

    kubectl annotate pod <pod_name> <annotation>
    
  9. Add/update the label of a pod

    kubectl label pod <pod_name>
    

Replication Controllers

  1. View the list of replication controllers

    kubectl get rc
    
  2. View the list of replication controllers by namespace

    kubectl get rc --namespace="<namespace_name>"
    
  3. Scale a ReplicaSet

    kubectl scale --replicas=<expected_replica_num> replicaset <name>
    

Deployment Management

  1. List the deployments

    kubectl get deployment
    
  2. Show the precise status of single or multiple deployments.

    kubectl describe deployment <deployment_name>
    
  3. Edit and update the deployment.

    kubectl edit deployment <deployment_name>
    
  4. Create a new deployment

    kubectl create deployment <deployment_name>
    
  5. Delete a deployment

    kubectl delete deployment <deployment_name>
    
  6. Check the rollout status of a deployment

    kubectl rollout status deployment <deployment_name>
    
  7. Display Resource usage (CPU/Memory/Storage) for nodes

    kubectl top node
    
  8. See resource allocation per node

    kubectl describe nodes | grep Allocated -A 5
    
  9. List the pods running on a node

    kubectl get pods -o wide | grep <node_name>
    
  10. To annotate a node

    kubectl annotate node <node_name>
    
  11. Add or update the labels of a node

    kubectl label nodes <your-node-name> <label>
    
  12. Scale a Deployment

    kubectl scale deployment <deployment-name> --replicas=<number-of-replicas>
    

Secrets

  1. Create a secret

    kubectl create secret <name>
    
  2. List secrets

    kubectl get secrets
    
  3. View details about secrets

    kubectl describe secrets <name>
    
  4. Delete a secret

    kubectl delete secret <secret_name>
    

Services

  1. List the services

    kubectl get services
    
  2. View the detailed state of a service

    kubectl describe services <name>
    
  3. Expose a replication controller, deployment or pod as a new Kubernetes service

    kubectl expose deployment [deployment_name]
    
  4. Edit/update the definition of a service

    kubectl edit service <name>
    

Common Options

Commands in Kubectl can include optional flags. Here are a few examples of the most popular and helpful ones.

  1. –o Format of output. (Suppose you wanted to list all of the pods in ps output format with additional information.)

    kubectl get pods -o wide
    
  2. Create any resource(pod/replicaset/deployment, etc) using a yaml/json file.

    kubectl apply -f <xyz.yaml>
    

Nội dung tham khảo

Nội dung bài viết này được mình tìm hiểu, tham khảo, đúc kết và tổng hợp lại từ nhiều nguồn. Mọi người có thể xem thêm các bài viết sau:

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