搭建Redis集群-3主3从（只有一台服务器）

电玩女神 2023-06-16 10:40 9阅读 0赞

*如有多个服务器，则对应修改IP即可*

服务器：47.112.132.33  
使用6个端口（4001~4006）

**安装包：redis-5.0.7.tar.gz**  
插件：ruby、rubygems

查看4个端口有无被占用：

lsof -i:4001（端口号4001~4006）

创建文件夹：

mkdir /usr/local/redis

将安装包放到此文件夹下：![在这里插入图片描述][20191126002009553.png]

tar -zxvf redis-5.0.7.tar.gz                #解压
    
    cd /usr/local/redis/redis-5.0.7
    make                                        #编译
    
    mkdir /usr/local/redis/bin                  #创建对应bin目录
    
    cd /usr/local/redis/redis-5.0.7/src
    cp redis-benchmark redis-check-aof redis-check-rdb redis-cli redis-sentinel redis-server redis-trib.rb ../../bin/       #拷贝可执行文件到bin目录

安装插件

yum -y install ruby
    yum -y install rubygems

我这个环境是有RubyGems的，查看是否有RubyGems：

gem -v

创建各个节点的配置文件（如果有多个服务器就在多个服务器上）

mkdir /home/user/software/redis-cluster
    mkdir 4001 4002 4003 4004                                                                                #创建4个Redis实例对应的文件夹
    
    cp /usr/local/redis/redis-5.0.7/redis.conf /home/user/software/redis-cluster/4001                        #创建Redis实例的conf文件（拷贝过来）
    cp /usr/local/redis/redis-5.0.7/redis.conf /home/user/software/redis-cluster/4002
    cp /usr/local/redis/redis-5.0.7/redis.conf /home/user/software/redis-cluster/4003
    cp /usr/local/redis/redis-5.0.7/redis.conf /home/user/software/redis-cluster/4004
    cp /usr/local/redis/redis-5.0.7/redis.conf /home/user/software/redis-cluster/4005
    cp /usr/local/redis/redis-5.0.7/redis.conf /home/user/software/redis-cluster/4006
    
    cp /usr/local/redis/redis-5.0.7/src/redis-server /home/user/software/redis-cluster/4001                  #Redis实例的执行命令拷过来
    cp /usr/local/redis/redis-5.0.7/src/redis-server /home/user/software/redis-cluster/4002
    cp /usr/local/redis/redis-5.0.7/src/redis-server /home/user/software/redis-cluster/4003
    cp /usr/local/redis/redis-5.0.7/src/redis-server /home/user/software/redis-cluster/4004
    cp /usr/local/redis/redis-5.0.7/src/redis-server /home/user/software/redis-cluster/4005
    cp /usr/local/redis/redis-5.0.7/src/redis-server /home/user/software/redis-cluster/4006

配置文件修改：

port 4001                                            #Redis实例启动端口号（4001~4006）
    bind 172.18.249.191 127.0.0.1                        #Redis启动绑定的网卡（本地） 我这里用的是阿里云，分为公网IP和虚拟IP，在这里要配置ifconfig中显示的IP
    protected-mode no
    daemonize yes
    cluster-enabled yes
    cluster-config-file nodes-4001.conf
    cluster-node-timeout 15000
    appendonly yes
    # requirepass foobared #在创建Redis集群时，要确保这个配置项是被注释掉的，否则无法创建集群

配置好后启动测试一下

./redis-server ./redis.conf （在/home/user/software/redis-cluster/4001 ）
    ps -ef | grep redis

可以看到以下结果![在这里插入图片描述][20191126002208612.png]  
登录客户端看一下：能进去

/usr/local/redis/bin/redis-cli -h 47.112.132.33 -p 4001

![在这里插入图片描述][20191126002238687.png]

启动各个节点Redis  
![在这里插入图片描述][20191126002245925.png]

cd /usr/local/redis/bin/
    
    ./redis-trib.rb create --replicas 1 47.112.132.33:4001 47.112.132.33:4002 47.112.132.33:4003 47.112.132.33:4004  #Redis5.0以下用ruby命令
    ./redis-cli --cluster create 47.112.132.33:4001 47.112.132.33:4002 47.112.132.33:4003 47.112.132.33:4004 47.112.132.33:4005 47.112.132.33:4006 --cluster-replicas 1    #Redis5.0以上用这个

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDUwNTk4Mw_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][20191126002319154.png]  
突然发现Redis集群至少要6个节点

记得开放集群总线端口：  
集群总线参考出处：https://blog.csdn.net/Truong/article/details/52531103

> redis集群创建执行 ./redis-trib.rb create --replicas 1 XXXX:PORT1 XXXX:PORT2  
> … 的时候 一直等待 Waiting for the cluster to join 很久都没有反应 原因：  
> redis集群不仅需要开通redis客户端连接的端口，而且需要开通集群总线端口 集群总线端口为redis客户端连接的端口 + 10000  
> 如redis端口为6379 则集群总线端口为16379 故，所有服务器的点需要开通redis的客户端连接端口和集群总线端口  
> 注意：iptables 放开，如果有安全组，也要放开这两个端口

执行Redis集群创建命令

[root@master bin]# ./redis-cli --cluster create 47.112.132.33:4001 47.112.132.33:4002 47.112.132.33:4003 47.112.132.33:4004 47.112.132.33:4005 47.112.132.33:4006 --cluster-replicas 1
    >>> Performing hash slots allocation on 6 nodes...
    Master[0] -> Slots 0 - 5460
    Master[1] -> Slots 5461 - 10922
    Master[2] -> Slots 10923 - 16383
    Adding replica 47.112.132.33:4005 to 47.112.132.33:4001
    Adding replica 47.112.132.33:4006 to 47.112.132.33:4002
    Adding replica 47.112.132.33:4004 to 47.112.132.33:4003
    >>> Trying to optimize slaves allocation for anti-affinity
    [WARNING] Some slaves are in the same host as their master
    M: 08e95f4330980957a5f5dd4d90642f15b291b31c 47.112.132.33:4001
       slots:[0-5460] (5461 slots) master
    M: a2ef92d8cc2c397cae3de52e3a4b089190a904c8 47.112.132.33:4002
       slots:[5461-10922] (5462 slots) master
    M: 86f606b8c6ef264d7d0a8de4aa914a7c8b2f9bf1 47.112.132.33:4003
       slots:[10923-16383] (5461 slots) master
    S: 990d9d8da4c7195d00a15345a6ff157aa56aa22d 47.112.132.33:4004
       replicates a2ef92d8cc2c397cae3de52e3a4b089190a904c8
    S: b62a0102ed8b9a88ede21a8e055b7b6f2f6ad9ad 47.112.132.33:4005
       replicates 86f606b8c6ef264d7d0a8de4aa914a7c8b2f9bf1
    S: a9d77a3c7fa0c6ba2256e46b15228e5707e15e3f 47.112.132.33:4006
       replicates 08e95f4330980957a5f5dd4d90642f15b291b31c
    Can I set the above configuration? (type 'yes' to accept): yes
    >>> Nodes configuration updated
    >>> Assign a different config epoch to each node
    >>> Sending CLUSTER MEET messages to join the cluster
    Waiting for the cluster to join
    ...
    >>> Performing Cluster Check (using node 47.112.132.33:4001)
    M: 08e95f4330980957a5f5dd4d90642f15b291b31c 47.112.132.33:4001
       slots:[0-5460] (5461 slots) master
       1 additional replica(s)
    S: b62a0102ed8b9a88ede21a8e055b7b6f2f6ad9ad 47.112.132.33:4005
       slots: (0 slots) slave
       replicates 86f606b8c6ef264d7d0a8de4aa914a7c8b2f9bf1
    M: 86f606b8c6ef264d7d0a8de4aa914a7c8b2f9bf1 47.112.132.33:4003
       slots:[10923-16383] (5461 slots) master
       1 additional replica(s)
    S: 990d9d8da4c7195d00a15345a6ff157aa56aa22d 47.112.132.33:4004
       slots: (0 slots) slave
       replicates a2ef92d8cc2c397cae3de52e3a4b089190a904c8
    S: a9d77a3c7fa0c6ba2256e46b15228e5707e15e3f 47.112.132.33:4006
       slots: (0 slots) slave
       replicates 08e95f4330980957a5f5dd4d90642f15b291b31c
    M: a2ef92d8cc2c397cae3de52e3a4b089190a904c8 47.112.132.33:4002
       slots:[5461-10922] (5462 slots) master
       1 additional replica(s)
    [OK] All nodes agree about slots configuration.
    >>> Check for open slots...
    >>> Check slots coverage...
    [OK] All 16384 slots covered.

尝试存储、获取：  
![在这里插入图片描述][20191126002516255.png]

=======分别在各个节点设置密码（4001~4006）

/usr/local/redis/bin/redis-cli -h 47.112.132.33 -p 4001 -c
    config set requirepass jyk@2019
    auth jyk@2019

=====集群状态

cluster info

[20191126002009553.png]: https://img-blog.csdnimg.cn/20191126002009553.png
[20191126002208612.png]: https://img-blog.csdnimg.cn/20191126002208612.png
[20191126002238687.png]: https://img-blog.csdnimg.cn/20191126002238687.png
[20191126002245925.png]: https://img-blog.csdnimg.cn/20191126002245925.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDUwNTk4Mw_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191126002311792.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDUwNTk4Mw==,size_16,color_FFFFFF,t_70
[20191126002319154.png]: https://img-blog.csdnimg.cn/20191126002319154.png
[20191126002516255.png]: https://img-blog.csdnimg.cn/20191126002516255.png