helm启动radis-ha

文章目录

• 1. 准备
• 2. 修改配置文件
• 3. 启动服务
• 4. 查看
• • pod
  • service

前言：
helm启动redis集群，可用户生产环境。

• 我的其他相关文档链接如下：
  《kubernetes启动单机redis》
  《docker-compose快速启动redis》

1. 准备

• 下载 charts-master https://github.com/yathe/KCharts/tree/master/Charts-master
• 找到 charts-master/stable/redis-ha 这个目录

2. 修改配置文件

以下修改 redis-ha/values.yaml

• 修改密码

## Configures redis with AUTH (requirepass & masterauth conf params)
auth: true
redisPassword: yunweizhidao

• 修改存储

persistentVolume:
  enabled: true
  ## redis-ha data Persistent Volume Storage Class
  ## If defined, storageClassName: <storageClass>
  ## If set to "-", storageClassName: "", which disables dynamic provisioning
  ## If undefined (the default) or set to null, no storageClassName spec is
  ##   set, choosing the default provisioner.  (gp2 on AWS, standard on
  ##   GKE, AWS & OpenStack)
  ##
  # storageClass: "-"
  accessModes:
    - ReadWriteOnce
  size: 300Gi
  annotations: {}
  # reclaimPolicy per https://kubernetes.io/docs/concepts/storage/persistent-volumes/#reclaiming
  reclaimPolicy: ""

• 启用haproxy

haproxy:
  enabled: true
  # Enable if you want a dedicated port in haproxy for redis-slaves
  readOnly:
    enabled: true
    port: 6380
  replicas: 3
  image:
    repository: haproxy
    tag: 2.0.4
    pullPolicy: IfNotPresent

• 其他
  比如资源限制和一些参数优化根据情况修改。

3. 启动服务

• 创建namespace

[root@DoM01 redis-ha]# kubectl create namespace redis

• 创建release
  进入redis-ha 目录执行

helm install redis-ha -n redis

• 查看release

[root@DoM01 redis-ha]# helm list -n redis
NAME            NAMESPACE       REVISION        UPDATED                                 STATUS          CHART           APP VERSION
redis-ha        redis           2               2021-02-01 13:43:34.01374826 +0800 CST  deployed        redis-ha-4.4.4  5.0.6
 

4. 查看

查看redis下资源如下：

[root@DoM01 redis-ha]# kubectl get all -n redis
NAME                                    READY   STATUS    RESTARTS   AGE
pod/redis-ha-haproxy-68d8dc6644-hmvsp   1/1     Running   0          8h
pod/redis-ha-haproxy-68d8dc6644-q7lkx   1/1     Running   0          8h
pod/redis-ha-haproxy-68d8dc6644-sd4mh   1/1     Running   0          8h
pod/redis-ha-server-0                   2/2     Running   0          13d
pod/redis-ha-server-1                   2/2     Running   0          13d
pod/redis-ha-server-2                   2/2     Running   0          13d
 
 
NAME                          TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                         AGE
service/redis-ha              ClusterIP   None           <none>        6379/TCP,26379/TCP              13d
service/redis-ha-announce-0   ClusterIP   10.1.3.165     <none>        6379/TCP,26379/TCP              13d
service/redis-ha-announce-1   ClusterIP   10.1.193.90    <none>        6379/TCP,26379/TCP              13d
service/redis-ha-announce-2   ClusterIP   10.1.145.245   <none>        6379/TCP,26379/TCP              13d
service/redis-ha-haproxy      NodePort    10.1.172.30    <none>        6379:30010/TCP,6380:30011/TCP   8h
 
 
NAME                               READY   UP-TO-DATE   AVAILABLE   AGE
deployment.apps/redis-ha-haproxy   3/3     3            3           8h
 
NAME                                          DESIRED   CURRENT   READY   AGE
replicaset.apps/redis-ha-haproxy-68d8dc6644   3         3         3       8h
 
NAME                               READY   AGE
statefulset.apps/redis-ha-server   3/3     13d

pod

3个无状态的 haproxy
3个有状态的 redis

service

• 3个redis的常规 service

redis端口：6379/TCP
哨兵端口：26379/TCP

• 1个redis的headless类型service

redis端口：6379/TCP
哨兵端口：26379/TCP

• 1个haproxy的service（客户端连这两个端口）

读写端口： 6379:30010/TCP
只读端口： 6380:30011/TCP

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