KubeSphere多节点安装

1.背景

因为觉得手动在云服务安装麻烦，了解到用KubeSphere可以快速实现k8s的集群安装，在这里记录一下安装过程，以及遇到的问题。

2.步骤

官网文档：多节点安装 (kubesphere.io)

1、下载KubeKey

export KKZONE=cn
curl -sfL https://get-kk.kubesphere.io | VERSION=v1.1.1 sh -
chmod +x kk

2、创建集群配置文件、并修改配置文件

./kk create config --with-kubernetes v1.20.4 --with-kubesphere v3.1.1

3、创建集群

./kk create cluster -f config-sample.yaml

4、查看进度

kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f

注意事项

1.修改配置文件 config-sample.yaml 修改host: 将address，internalAddress换成私有地址,将user与password换成登录主机的账号密码。如果ssh无法链接，参考SSH 连接故障 (kubesphere.com.cn)

2.若安装最初出现缺什么就安装什么

yum install -y xxx

3.若出现KubeSphere startup timeout. 我这里检查是镜像拉去不到，可以切换docker镜像

# docker加速配置
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
  "registry-mirrors": ["https://82m9ar63.mirror.aliyuncs.com"],
  "exec-opts": ["native.cgroupdriver=systemd"],
  "log-driver": "json-file",
  "log-opts": {
    "max-size": "100m"
  },
  "storage-driver": "overlay2"
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

apiVersion: kubekey.kubesphere.io/v1alpha1
kind: Cluster
metadata:
  name: sample
spec:
  hosts:
  - {name: master, address: xxx.xxx.xxx.xxx, internalAddress: xxx.xxx.xxx.xxx, user: root, password: xxxxxx}
  - {name: node1, address: xxx.xxx.xxx.xxx, internalAddress: xxx.xxx.xxx.xxx, user: root, password: xxxxxx}
  - {name: node2, address: xxx.xxx.xxx.xxx, internalAddress: xxx.xxx.xxx.xxx, user: root, password: xxxxxx}
  roleGroups:
    etcd:
    - master
    master: 
    - master
    worker:
    - node1
    - node2
  controlPlaneEndpoint:
    domain: lb.kubesphere.local
    address: ""
    port: 6443
  kubernetes:
    version: v1.20.4
    imageRepo: kubesphere
    clusterName: cluster.local
  network:
    plugin: calico
    kubePodsCIDR: 10.233.64.0/18
    kubeServiceCIDR: 10.233.0.0/18
  registry:
    registryMirrors: []
    insecureRegistries: []
  addons: []


---
apiVersion: installer.kubesphere.io/v1alpha1
kind: ClusterConfiguration
metadata:
  name: ks-installer
  namespace: kubesphere-system
  labels:
    version: v3.1.1
spec:
  persistence:
    storageClass: ""       
  authentication:
    jwtSecret: ""
  zone: ""
  local_registry: ""        
  etcd:
    monitoring: false      
    endpointIps: localhost  
    port: 2379             
    tlsEnable: true
  common:
    redis:
      enabled: false
    redisVolumSize: 2Gi 
    openldap:
      enabled: false
    openldapVolumeSize: 2Gi  
    minioVolumeSize: 20Gi
    monitoring:
      endpoint: http://prometheus-operated.kubesphere-monitoring-system.svc:9090
    es:  
      elasticsearchMasterVolumeSize: 4Gi   
      elasticsearchDataVolumeSize: 20Gi   
      logMaxAge: 7          
      elkPrefix: logstash
      basicAuth:
        enabled: false
        username: ""
        password: ""
      externalElasticsearchUrl: ""
      externalElasticsearchPort: ""  
  console:
    enableMultiLogin: true 
    port: 30880
  alerting:       
    enabled: false
    # thanosruler:
    #   replicas: 1
    #   resources: {}
  auditing:    
    enabled: false
  devops:           
    enabled: false
    jenkinsMemoryLim: 2Gi     
    jenkinsMemoryReq: 1500Mi 
    jenkinsVolumeSize: 8Gi   
    jenkinsJavaOpts_Xms: 512m  
    jenkinsJavaOpts_Xmx: 512m
    jenkinsJavaOpts_MaxRAM: 2g
  events:          
    enabled: false
    ruler:
      enabled: true
      replicas: 2
  logging:         
    enabled: false
    logsidecar:
      enabled: true
      replicas: 2
  metrics_server:             
    enabled: false
  monitoring:
    storageClass: ""
    prometheusMemoryRequest: 400Mi  
    prometheusVolumeSize: 20Gi  
  multicluster:
    clusterRole: none 
  network:
    networkpolicy:
      enabled: false
    ippool:
      type: none
    topology:
      type: none
  openpitrix:
    store:
      enabled: false
  servicemesh:    
    enabled: false  
  kubeedge:
    enabled: false
    cloudCore:
      nodeSelector: {"node-role.kubernetes.io/worker": ""}
      tolerations: []
      cloudhubPort: "10000"
      cloudhubQuicPort: "10001"
      cloudhubHttpsPort: "10002"
      cloudstreamPort: "10003"
      tunnelPort: "10004"
      cloudHub:
        advertiseAddress: 
          - ""           
        nodeLimit: "100"
      service:
        cloudhubNodePort: "30000"
        cloudhubQuicNodePort: "30001"
        cloudhubHttpsNodePort: "30002"
        cloudstreamNodePort: "30003"
        tunnelNodePort: "30004"
    edgeWatcher:
      nodeSelector: {"node-role.kubernetes.io/worker": ""}
      tolerations: []
      edgeWatcherAgent:
        nodeSelector: {"node-role.kubernetes.io/worker": ""}
        tolerations: []