docker-compose部署Redis-Cluster集群

曾经终败给现在 2022-10-06 06:52 317阅读 0赞

>  *  Centos7搭建Redis单机&主从&哨兵&集群：[https://yuanyu.blog.csdn.net/article/details/117069744][https_yuanyu.blog.csdn.net_article_details_117069744] 
>  *  Docker常用命令：[https://yuanyu.blog.csdn.net/article/details/103818345][https_yuanyu.blog.csdn.net_article_details_103818345]

--------------------

# 1 创建目录和配置文件 #

### 创建目录
    mkdir -p \
    /usr/local/redis/cluster/redis-6371/conf \
    /usr/local/redis/cluster/redis-6371/data \
    /usr/local/redis/cluster/redis-6372/conf \
    /usr/local/redis/cluster/redis-6372/data \
    /usr/local/redis/cluster/redis-6373/conf \
    /usr/local/redis/cluster/redis-6373/data \
    /usr/local/redis/cluster/redis-6374/conf \
    /usr/local/redis/cluster/redis-6374/data \
    /usr/local/redis/cluster/redis-6375/conf \
    /usr/local/redis/cluster/redis-6375/data \
    /usr/local/redis/cluster/redis-6376/conf \
    /usr/local/redis/cluster/redis-6376/data
    ### 创建redis配置文件
    touch \
    /usr/local/redis/cluster/redis-6371/conf/redis.conf \
    /usr/local/redis/cluster/redis-6372/conf/redis.conf \
    /usr/local/redis/cluster/redis-6373/conf/redis.conf \
    /usr/local/redis/cluster/redis-6374/conf/redis.conf \
    /usr/local/redis/cluster/redis-6375/conf/redis.conf \
    /usr/local/redis/cluster/redis-6376/conf/redis.conf \
    /usr/local/redis/cluster/docker-compose.yml

创建目录和文件的结构如下：

[root@localhost cluster]# pwd
    /usr/local/redis/cluster
    [root@localhost cluster]# tree
    .
    ├── docker-compose.yml
    ├── redis-6371
    │   ├── conf
    │   │   └── redis.conf
    │   └── data
    ├── redis-6372
    │   ├── conf
    │   │   └── redis.conf
    │   └── data
    ├── redis-6373
    │   ├── conf
    │   │   └── redis.conf
    │   └── data
    ├── redis-6374
    │   ├── conf
    │   │   └── redis.conf
    │   └── data
    ├── redis-6375
    │   ├── conf
    │   │   └── redis.conf
    │   └── data
    └── redis-6376
        ├── conf
        │   └── redis.conf
        └── data

--------------------

# 2 编写配置文件 #

每个节点的配置文件基本一样，只需要修改对应的端口号和节点ip即可

# 端口
    port 6371
    # 是否开启集群模式，默认 no
    cluster-enabled yes
    # 集群节点信息文件
    cluster-config-file nodes-6371.conf
    # 集群节点连接超时时间
    cluster-node-timeout 15000
    # aof模式开启和aof数据文件名
    appendonly yes
    appendfilename "appendonly-6371.aof"
    # rdb数据文件名
    dbfilename dump-6371.rdb
    # 设置密码
    requirepass 123456
    # 从节点访问主节点密码(必须与 requirepass 一致)
    masterauth 123456
    # 集群节点 IP（宿主机IP）
    cluster-announce-ip 192.168.10.101
    # 集群节点映射端口
    cluster-announce-port 6371
    # 集群节点总线端口
    cluster-announce-bus-port 16371

1、全局修改端口号

%s/6371/new/g

2、修改集群节点IP cluster-announce-ip

> 每个 Redis 集群节点都需要打开**两个 TCP 连接**。一个用于为客户端提供服务的正常 Redis TCP 端口，例如 6379。还有一个基于 6379 **端口加 10000 的端口**，比如 16379。
> 
> 第二个端口用于集群总线，这是一个使用二进制协议的节点到节点通信通道。节点使用集群总线进行故障检测、配置更新、故障转移授权等等。客户端永远不要尝试与集群总线端口通信，与正常的 Redis 命令端口通信即可，但是请确保防火墙中的这两个端口都已经打开，否则 Redis 集群节点将无法通信。

--------------------

# 3 编写docker-compose并启动 #

docker-compose.yml

version: "3"
    services:
      redis_6371:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis_6371
        restart: always
        volumes:
          - /usr/local/redis/cluster/redis-6371/conf/redis.conf:/usr/local/etc/redis/redis.conf
          - /usr/local/redis/cluster/redis-6371/data:/data
        ports:
          - 6371:6371
          - 16371:16371
        command:
          ["redis-server", "/usr/local/etc/redis/redis.conf"]
     
      redis_6372:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis_6372
        volumes:
          - /usr/local/redis/cluster/redis-6372/conf/redis.conf:/usr/local/etc/redis/redis.conf
          - /usr/local/redis/cluster/redis-6372/data:/data
        ports:
          - 6372:6372
          - 16372:16372
        command:
          ["redis-server", "/usr/local/etc/redis/redis.conf"]
     
      redis_6373:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis_6373
        volumes:
          - /usr/local/redis/cluster/redis-6373/conf/redis.conf:/usr/local/etc/redis/redis.conf
          - /usr/local/redis/cluster/redis-6373/data:/data
        ports:
          - 6373:6373
          - 16373:16373
        command:
          ["redis-server", "/usr/local/etc/redis/redis.conf"]
     
      redis_6374:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis_6374
        restart: always
        volumes:
          - /usr/local/redis/cluster/redis-6374/conf/redis.conf:/usr/local/etc/redis/redis.conf
          - /usr/local/redis/cluster/redis-6374/data:/data
        ports:
          - 6374:6374
          - 16374:16374
        command:
          ["redis-server", "/usr/local/etc/redis/redis.conf"]
     
      redis_6375:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis_6375
        volumes:
          - /usr/local/redis/cluster/redis-6375/conf/redis.conf:/usr/local/etc/redis/redis.conf
          - /usr/local/redis/cluster/redis-6375/data:/data
        ports:
          - 6375:6375
          - 16375:16375
        command:
          ["redis-server", "/usr/local/etc/redis/redis.conf"]
     
      redis_6376:
        image: daocloud.io/library/redis:6.0.4
        container_name: redis_6376
        volumes:
          - /usr/local/redis/cluster/redis-6376/conf/redis.conf:/usr/local/etc/redis/redis.conf
          - /usr/local/redis/cluster/redis-6376/data:/data
        ports:
          - 6376:6376
          - 16376:16376
        command:
          ["redis-server", "/usr/local/etc/redis/redis.conf"]

安装docker-compose

### 1 安装epel源
    yum install -y epel-release
     
    ### 2 安装docker-compose
    yum install -y docker-compose

docker-compose命令

### 创建
    vi docker-compose.yml
    ### 运行
    docker-compose up -d
    ### 查看日志
    docker-compose logs -f

docker ps --format "table {
       {.ID}}\t{
       {.Names}}\t{
       {.Ports}}\t{
       {.Status}}"

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70][]

--------------------

# 4 使用命令构建集群并验证 #

### 进入容器内部
    docker exec -it redis_6371 bash

随便一个 Redis 节点中使用客户端运行以下命令即可（注意IP和端口）：

redis-cli -a 123456 --cluster create \
    192.168.188.4:6371 192.168.188.4:6372 \
    192.168.188.4:6373 192.168.188.4:6374 \
    192.168.188.4:6375 192.168.188.4:6376 \
    --cluster-replicas 1

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70 1][]

>  *  `--cluster`：构建集群环境的所有 Redis 节点 IP + PORT 信息
>  *  `--cluster-replicas 1`：主节点数/从节点数的比例，使用一比一的比例，6 个节点最终会产生 3 主 3 从的集群环境

### 连接集群
    redis-cli -c -a 123456 -h 192.168.188.4 -p 6376
     
    ### 检查集群状态
    redis-cli -a 123456 --cluster check 192.168.188.4:6371

> [https://blog.csdn.net/qq\_39340792/article/details/113766933][https_blog.csdn.net_qq_39340792_article_details_113766933]

[https_yuanyu.blog.csdn.net_article_details_117069744]: https://yuanyu.blog.csdn.net/article/details/117069744
[https_yuanyu.blog.csdn.net_article_details_103818345]: https://yuanyu.blog.csdn.net/article/details/103818345
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70]: /images/20221005/e8aac371f889491ea18d77939d6bfc68.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQwNzk0OTcz_size_16_color_FFFFFF_t_70 1]: /images/20221005/9fe84192195147d1b94a825f4d466609.png
[https_blog.csdn.net_qq_39340792_article_details_113766933]: https://blog.csdn.net/qq_39340792/article/details/113766933