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+---
+ 标题: "KubeSphere 在 阿里云ECS 高可用实例"
+ 关键字: "Kubesphere，安装，高可用性，高可用性，负载均衡器"
+ 描述: "本教程用于安装高可用性集群"
+ ---
+
+ # 在阿里云ECS部署高可用的 KubeSphere
+
+ 快速入门 尝试建议All-In-One入手
+
+但对于生产环境，我们需要考虑集群的高可用性。
+kubernate服务需要做到高可用,需要保证kube-apiserver的ha,所以推荐下列两种方式
+ 1. 阿里云SLB
+ 2. keepalived + haproxy [keepalived + haproxy](https://kubesphere.com.cn/forum/d/1566-kubernetes-keepalived-haproxy)对kube-apiserver进行负载均衡，实现高可用kubernetes集群。
+
+ ## 前提条件
+
+ - 请遵循该[指南](https://github.com/kubesphere/kubekey)，确保您已经知道如何将KubeSphere与多节点集群一起安装。有关用于安装的config yaml文件的详细信息，请参阅多节点安装。本教程重点介绍如何配置负载均衡器。
+ - 考虑到数据的持久性，对于生产环境，我们不建议您使用存储OpenEBS,建议nfs,gfs等存储(需要提前安装)。文章为了进行开发和测试，集成的OpenEBS直接将LocalPV设置为存储服务。
+
+ ## 部署架构
+ ![部署架构](../../../../../static/images/docs/ali-ecs/ali.png)
+ ## 创建主机
+
+ 本示例创建 SLB + 6 台 **CentOS Linux release 7.6.1810 (Core)** 的虚拟机，每台配置为 2Core16GB50G
+
+ | 主机IP | 主机名称 | 角色 |
+ | --- | --- | --- |
+ |39.104.82.170|Eip|slb|
+ |172.24.107.72|master1|master1, etcd|
+ |172.24.107.73|master2|master2, etcd| 
+ |172.24.107.74|master3|master3, etcd| 
+ |172.24.107.75|node1|node|
+ |172.24.107.76|node2|node|
+ |172.24.107.77|node3|node|
+ 机器有限,所以把etcd放入master,在生产环境建议单独部署etcd,提高稳定性
+
+ ## 部署keepalived+haproxy
+ ###  1. 创建SLB
+ ![1-1-创建slb](../../../../../static/images/docs/ali-ecs/ali-slb-create.png)
+ 创建SLB实例
+ ### 2. 配置SLB
+ ![2-1-创建slb](../../../../../static/images/docs/ali-ecs/ali-slb-config.png)
+
+ 
+ 后面的config.yaml 需要配置slb分配的地址
+ ```yaml
+     controlPlaneEndpoint:
+         domain: lb.kubesphere.local
+         address: "39.104.82.170"
+         port: "6443"
+```
+ ### 3. 配置SLB 主机实例
+![3-1-添加主机](../../../../../static/images/docs/ali-ecs/ali-slb-add.png)
+添加需要负载的3台master主机 6443端口(api-server)
+![3-2-配置监听端口](../../../../../static/images/docs/ali-ecs/ali-slb-listen-conf1.png)
+![3-3-配置监听端口](../../../../../static/images/docs/ali-ecs/ali-slb-listen-conf2.png)
+![3-3-配置监听端口](../../../../../static/images/docs/ali-ecs/ali-slb-listen-conf3.png)
+- <font color=red>现在的健康检查暂时是失败的,因为还没部署master的服务,所以6443端口telnet不通的.
+</font>
+- 然后提交审核即可
+
+ ## 4. 获取安装程序可执行文件
+ ```bash
+ #下载installer 至随意一台机器
+ curl -O -k https://kubernetes.pek3b.qingstor.com/tools/kubekey/kk
+ chmod +x kk
+ ```
+
+ ## 创建多节点群集
+
+ 您可以使用高级安装来控制自定义参数或创建多节点群集。具体来说，通过指定配置文件来创建集群。
+
+ ### 5. 使用kubekey部署k8s集群 带kubesphere
+
+ ```bash
+ # 在当前位置创建配置文件config-sample.yaml|包含kubesphere的配置文件
+ ./kk create config --with-kubesphere v3.0.0 -f config-sample.yaml
+--- 
+# 同时安装存储插件 (支持：localVolume、nfsClient、rbd、glusterfs)。您可以指定多个插件并用逗号分隔。请注意，您添加的第一个将是默认存储类。
+./kk create config --with-storage localVolume --with-kubesphere v3.0.0 -f config-sample.yaml
+ ```
+ #### 6. 多集群配置调整
+ ```yaml
+ #vi ~/config-sample.yaml
+ apiVersion: kubekey.kubesphere.io/v1alpha1
+ kind: Cluster
+ metadata:
+   name: config-sample
+ spec:
+   hosts:
+   - {name: master1, address: 172.24.107.72, internalAddress: 172.24.107.72, user: root, password: QWEqwe123}
+   - {name: master2, address: 172.24.107.73, internalAddress: 172.24.107.73, user: root, password: QWEqwe123}
+   - {name: master3, address: 172.24.107.74, internalAddress: 172.24.107.74, user: root, password: QWEqwe123}
+   - {name: node1, address: 172.24.107.75, internalAddress: 172.24.107.75, user: root, password: QWEqwe123}
+   - {name: node2, address: 172.24.107.76, internalAddress: 172.24.107.76, user: root, password: QWEqwe123}
+   - {name: node3, address: 172.24.107.77, internalAddress: 172.24.107.77, user: root, password: QWEqwe123}
+ 
+   roleGroups:
+     etcd:
+     - master1
+     - master2
+     - master3
+     master: 
+     - master1
+     - master2
+     - master3
+     worker:
+     - node1
+     - node2
+     - node3
+   controlPlaneEndpoint:
+     domain: lb.kubesphere.local
+     address: "39.104.82.170"
+     port: "6443"
+   kubernetes:
+     version: v1.17.9
+     imageRepo: kubesphere
+     clusterName: cluster.local
+   network:
+     plugin: calico
+     kubePodsCIDR: 10.233.64.0/18
+     kubeServiceCIDR: 10.233.0.0/18
+   registry:
+     registryMirrors: ["https://*.mirror.aliyuncs.com"] # # input your registryMirrors
+     insecureRegistries: []
+   storage:
+     defaultStorageClass: localVolume
+     localVolume:
+       storageClassName: local
+ 
+ ---
+ apiVersion: installer.kubesphere.io/v1alpha1
+ kind: ClusterConfiguration
+ metadata:
+   name: ks-installer
+   namespace: kubesphere-system
+   labels:
+     version: v3.0.0
+ spec:
+   local_registry: ""
+   persistence:
+     storageClass: ""
+   authentication:
+     jwtSecret: ""
+   etcd:
+     monitoring: true
+     endpointIps: 172.24.107.72,172.24.107.73,172.24.107.74
+     port: 2379
+     tlsEnable: true
+   common:
+     es:
+       elasticsearchDataVolumeSize: 20Gi
+       elasticsearchMasterVolumeSize: 4Gi
+       elkPrefix: logstash
+       logMaxAge: 7
+     mysqlVolumeSize: 20Gi
+     minioVolumeSize: 20Gi
+     etcdVolumeSize: 20Gi
+     openldapVolumeSize: 2Gi
+     redisVolumSize: 2Gi
+   console:
+     enableMultiLogin: false  # enable/disable multi login
+     port: 30880
+   alerting:
+     enabled: false
+   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
+     logsidecarReplicas: 2
+   metrics_server:
+     enabled: true
+   monitoring:
+     prometheusMemoryRequest: 400Mi
+     prometheusVolumeSize: 20Gi
+   multicluster:
+     clusterRole: none  # host | member | none
+   networkpolicy:
+     enabled: false
+   notification:
+     enabled: false
+   openpitrix:
+     enabled: false
+   servicemesh:
+     enabled: false
+ ```
+
+ #### 7. 执行命令创建集群
+ ```bash
+指定配置文件创建集群
+./kk create cluster -f config-sample.yaml
+
+查看kubesphere安装日志  -- 直到出现下面的输出结果
+kubectl logs -n kubesphere-system $(kubectl get pod -n kubesphere-system -l app=ks-install -o jsonpath='{.items[0].metadata.name}') -f
+```
+ 
+ ```
+ #### 输出结果
+ ```bash
+ **************************************************
+ task monitoring status is running
+ task multicluster status is successful
+ total: 2     completed:1
+ **************************************************
+ task monitoring status is successful
+ task multicluster status is successful
+ total: 2     completed:2
+ **************************************************
+ #####################################################
+ ###              Welcome to KubeSphere!           ###
+ #####################################################
+ 
+ Console: http://172.24.107.72:30880
+ Account: admin
+ Password: P@88w0rd
+ 
+ NOTES：
+   1. After logging into the console, please check the
+      monitoring status of service components in
+      the "Cluster Management". If any service is not
+      ready, please wait patiently until all components 
+      are ready.
+   2. Please modify the default password after login.
+ 
+ #####################################################
+ https://kubesphere.io             2020-08-24 23:30:06
+ #####################################################
+ ```
+## 下图为部署后的使用情况
+ ![部署架构](../../../../../static/images/docs/ali-ecs/succes.png)
+
+
+```bash
+
+#删除cluster
+ ./kk delete cluster -f config-sample.yaml --debug --skip-pull-images
+ #小提示，如果安装过程中碰到`Failed to add worker to cluster: Failed to exec command...`
+ kubeadm reset
+```
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