Shulou(Shulou.com)06/03 Report--

Related Services and uses Node name name usage Management Node kubctl-apiserver provides HTTP Rest unified interface services for processing and verifying REST requests and updating API objects in etcd status management node kubectl-controller-manager resource control management synchronous management node kube-scheduler is responsible for resource scheduling (scheduling Pod) worker node kubelet manages the life cycle of Pod The work node kube-proxy for creating, starting and stopping tasks is responsible for network communication and load balancing # 1. Restart the service

Kubectl patch deployment app name-p {\ "spec\": {\ "template\": {\ "metadata\": {\ "labels\": {\ "date\":\ "date +'% s'\"}-n kube-system

# 2. Reassign the number of pod

Kubectl scale deployment kubernetes-dashboard-- replicas=1-n kube-system

# 3. View deployed applications

Kubectl get deploy-n kube-system

# 4. Get the log contents of the last run of the container

Kubectl logs-previous

Kubectl logs-- previous l7-lb-controller-74c67fb85d-5b5cg-n kube-system

# 5. View description

Kubectl describe svc kubernetes-dashboard-n kube-system

Kubectl describe pod kubernetes-dashboard-n kube-system

# 6. View pod deployment nodes and IP

Kubectl get pods-n kube-system-o wide

# 7. View the services in the cluster

Kubectl get services-all-namespaces

Kubectl get svc kubernetes-dashboard-n kube-system

# 8. View exposed port

Kubectl get endpoints-n kube-system kubernetes-dashboard

Kubectl get ep-n kube-system kubernetes-dashboard

# # 9. Label Management add tags

Kubectl label node 192.168.61.66 nodetype=node-overwrite

Lsmod | grep ip_vs

View label

Kubectl get node-- show-labels-n kube-system

Kubectl get pods-show-labels kube-sytem

Kubectl get pod-- show-labels kubernetes-dashboard-6845889d64-25f9x-n kube-system

# 10. View svc/pod description

Kubectl describe type resource name namespace

Kubectl describe svc kubernetes-dashboard-n kube-system

Kubectl describe pod kubernetes-dashboard-n kube-system

# 11. Query log check the log of a certain Pod (standard output)

Kubectl logs-f pod name-n kube-system

Execute commands within the container

Kubectl exec-ti pod name / bin/bash-n kube-system

# 12. Display pod information in yaml/json mode

Kubectl get deployment-o yaml kubernetes-dashboard-n kube-system

Kubectl get daemonset-o yaml-n kube-system calico-node

Kubectl get svc-o json pod name-n kube-system

# 13. Show all services

Kubectl get deployments-n kube-system

Kubectl get daemonsets-n kube-system

# 14. Create a namespace by creating a command

Kubectl create namespace new-namespace

Create from a file

Cat > my-namespace.yaml / usr/bin/kubeadm

View cluster access connections

Kubectl cluster-info

View permissions

Kubectl describe clusterrole cluster-admin-n kube-system

View kubectl version

Kubectl version

View the supported api version

Kubectl api-version

View current kubectl configuration

Kubectl config view

View cluster status

Kubectl get componentstatuses

Kubectl get rs

View cluster nodes

Kubectl get nodes

View Namespace

Kubectl get namespaces

Node condition maintenance

Each Node includes the following status information

Address: including hostname, public network IP and private network IP

Conditions (Condition): including OutOfDisk, Ready, MemoryPressure and DiskPressure

Capacity (Capacity): total resources available on the Node, including CPU, memory, and Pod

Basic information (Info): including kernel version, container engine version, OS type, etc.

Maintenance status / cancel maintenance mode

Kubectl cordon NodeName

Kubectl uncordon NodeName

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.