Redis 4.x 集群部署

素颜马尾好姑娘i 2021-12-15 19:51 346阅读 0赞

1.Redis简介

redis是基于内存非关系型存储数据库，同时支持持久化操作。

2.安装环境

Redis使用c语言开发，需要使用gcc编译程序进行编译。

gcc安装命令：yum -y install gcc

3.安装redis

安装 参考该文章[https://blog.csdn.net/yiyijianxian/article/details/94410785][https_blog.csdn.net_yiyijianxian_article_details_94410785]

4.redis集群配置

在 /usr/local/ 下面创建redis-cluster文件夹，并分别创建

nodes-7000

nodes-7001

nodes-7002

作为集群的节点，把redis服务下的redis.conf 文件复制三份 分别到nodes-7000，nodes-7001，nodes-7002这三个文件夹下，并修改配置端口和绑定ip

port 7000 
    #在不同的服务器和nodes-xx中，端口也不同 
    cluster-enabled yes bind 127.0.0.1 
    # daemonize yes #redis后台运行
    cluster-config-file nodes-7000.conf 
    cluster-node-timeout 5000 
    appendonly yes

5.启动redis多实例

[root@localhost redis40]# src/redis-server /usr/local/redis-cluster/nodes-7000/nodes-7000.conf 
    [root@localhost redis40]# src/redis-server /usr/local/redis-cluster/nodes-7001/nodes-7001.conf 
    [root@localhost redis40]# src/redis-server /usr/local/redis-cluster/nodes-7002/nodes-7002.conf
    [root@localhost redis40]# src/redis-server /usr/local/redis-cluster/nodes-7003/nodes-7003.conf 
    [root@localhost redis40]# src/redis-server /usr/local/redis-cluster/nodes-7004/nodes-7004.conf 
    [root@localhost redis40]# src/redis-server /usr/local/redis-cluster/nodes-7005/nodes-7005.conf 
    
    --后台启动方法
    nohup src/redis-server redis-cluster/nodes-7000/redis.conf > redis-cluster/nodes-7000/redis-server.out 2>&1 &

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查看redis多实例启动的情况

![20190721162929724.png][]

6.创建集群

src/redis-trib.rb create --replicas 1 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lpeWlqaWFueGlhbg_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lpeWlqaWFueGlhbg_size_16_color_FFFFFF_t_70 2][]

集群创建完成，运行正常。`[OK] All 16384 slots covered.`意味着集群中的16384个槽至少有一个主节点在处理

\--replicas 1 ：表示主从复制比例为 1:1，即一个主节点对应一个从节点，redis有16383的slot(插槽)，slot默认将slot平均分配给三个主节点。

**6 验证集群正确性**

**集群启动状态检测**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lpeWlqaWFueGlhbg_size_16_color_FFFFFF_t_70 3][]

**7.登录集群**

\[root@localhost redis40\]\# ./src/redis-cli -c -h 127.0.0.1 -p 7000

![20190721180259913.png][]

**8.查看集群状态和节点信息**

cluster info

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lpeWlqaWFueGlhbg_size_16_color_FFFFFF_t_70 4][]

cluster nodes

![20190721180432348.png][]

9.**集群测试**

在7000节点存入 key=abc value=12345

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lpeWlqaWFueGlhbg_size_16_color_FFFFFF_t_70 5][]

取出缓存数据

![20190721181247371.png][]

[https_blog.csdn.net_yiyijianxian_article_details_94410785]: https://blog.csdn.net/yiyijianxian/article/details/94410785
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