我们这使用redis版本为6.2.6，下载好后放在某个文件夹然后解压这个步骤。我这是/home/redis，废话不多说我们开干。

一、创建五个文件夹

使用mkdir名称创建7000 7001 7002 7003 7004 7005六?个文件夹

[root@VM-0-5-centos redis]# mkdir 7000 7001 7002 7003 7004 7005
[root@VM-0-5-centos redis]# ll
total 2448
drwxr-xr-x 2 root root    4096 Jan  7 09:53 7000
drwxr-xr-x 2 root root    4096 Jan  7 09:53 7001
drwxr-xr-x 2 root root    4096 Jan  7 09:53 7002
drwxr-xr-x 2 root root    4096 Jan  7 09:53 7003
drwxr-xr-x 2 root root    4096 Jan  7 09:53 7004
drwxr-xr-x 2 root root    4096 Jan  7 09:53 7005
drwxrwxr-x 7 root root    4096 Oct 31 09:35 redis-6.2.6
-rw-r--r-- 1 root root 2476542 Oct  4 19:19 redis-6.2.6.tar.gz

二、将redis.conf配置文件复制6个份，分别放在第一步创建的6个文件夹中

[root@VM-0-5-centos redis]# cp /home/redis/redis-6.2.6/redis.conf /home/redis/7000
[root@VM-0-5-centos redis]# cp /home/redis/redis-6.2.6/redis.conf /home/redis/7001
[root@VM-0-5-centos redis]# cp /home/redis/redis-6.2.6/redis.conf /home/redis/7002
[root@VM-0-5-centos redis]# cp /home/redis/redis-6.2.6/redis.conf /home/redis/7003
[root@VM-0-5-centos redis]# cp /home/redis/redis-6.2.6/redis.conf /home/redis/7004
[root@VM-0-5-centos redis]# cp /home/redis/redis-6.2.6/redis.conf /home/redis/7005

三、修改6个文件夹中的redis.config配置文件

## 如果是在单机模拟集群必须指定bind的IP，如果不修改ip的话使用程序连接集群会报错
bind 0.0.0.0
#关闭保护模式,如果开启需要设置密码
protected-mode no
## 7000-7005端口
port 7000
## 后台启动
daemonize yes

pidfile /var/run/redis_7000.pid

dir /home/redis/7000/
#开启redis-cluster集群
cluster-enabled yes
## 每个实例还包含存储此节点配置的文件的路径，默认情况下为nodes.conf，自动创建
cluster-config-file /home/redis/7000/nodes-7000.conf

四、启动单个节点

此时节点之间还没有联系

[root@VM-0-5-centos redis]# redis-6.2.6/src/redis-server 7000/redis.conf
[root@VM-0-5-centos redis]# redis-6.2.6/src/redis-server 7001/redis.conf
[root@VM-0-5-centos redis]# redis-6.2.6/src/redis-server 7002/redis.conf
[root@VM-0-5-centos redis]# redis-6.2.6/src/redis-server 7003/redis.conf
[root@VM-0-5-centos redis]# redis-6.2.6/src/redis-server 7004/redis.conf
[root@VM-0-5-centos redis]# redis-6.2.6/src/redis-server 7005/redis.conf

五、查看redis进程，确定是否全部正常启动

ps -ef|grep redis

六、创建集群

通过命令redis-cli -h ip -p port进入指定的redis的手脚架，redis-cli -h IP -p 6379，-h后面接redis服务器的IP地址，-p后面接端口， 一般没做过修改redis.conf情况下端口是6379，我这对应的是端口7000

redis-cli -h 192.168.64.1 -p 7000

#不要用内网ip
redis-6.2.6/src/redis-cli --cluster create 192.168.64.1:7000 192.168.64.1:7001 192.168.64.1:7002 192.168.64.1:7003 192.168.64.1:7004 192.168.64.1:7005 --cluster-replicas 1
#用外网ip
redis-6.2.6/src/redis-cli --cluster create ip:7000 ip:7001 ip:7002 ip:7003 ip:7004 ip:7005 --cluster-replicas 1

集群参数说明

cluster-replicas 1：为每个主节点创建从节点的数量，1表示一主一从，2表示一主二从

[root@VM-0-5-centos redis]# redis-6.2.6/src/redis-cli --cluster create ip:7000 ip:7001 ip:7002 ip:7003 ip:7004 ip:7005 --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 ip:7004 to ip:7000
Adding replica ip:7005 to ip:7001
Adding replica ip:7003 to ip:7002
>>> Trying to optimize slaves allocation for anti-affinity
[WARNING] Some slaves are in the same host as their master
M: 2629dfd2c10a0bc6a3d83325b94f90076a734c3a ip:7000
   slots:[0-5460] (5461 slots) master
M: a06128cfc6ecc474f4e4b8ea2f28057b65323b5d ip:7001
   slots:[5461-10922] (5462 slots) master
M: 7a857547ac2c30ae32d0143b5e74f117cd733009 ip:7002
   slots:[10923-16383] (5461 slots) master
S: c9377a700a6832d99a9a11dc04aad18abff46cdc ip:7003
   replicates a06128cfc6ecc474f4e4b8ea2f28057b65323b5d
S: c397ccd12f648a6aca8f33cb23ae511113b5b046 ip:7004
   replicates 7a857547ac2c30ae32d0143b5e74f117cd733009
S: 88b190b173c711768039c79c3e0fcc581430b6cf ip:7005
   replicates 2629dfd2c10a0bc6a3d83325b94f90076a734c3a
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
................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

Can I set the above configuration? (type 'yes' to accept): 询问是否确认节点 slots 分配方案， 我们输入 ‘yes’。

发现一直卡在Waiting for the cluster to join,需要开放云服务器的端口，添加redis集群总线端口和每个redis实例的通信端口即可。

首先需要理清一个概念，就是redis集群总线：

redis集群总线端口为redis客户端端口加上10000，比如说你的redis 6379端口为客户端通讯端口，那么16379端口为集群总线端口

我搭建的redis集群终端口号是从 7001 ~ 7006的，其中 7001、7003、7005 为主节点，7002、7004、7006为从节点；那么redis集群中总线端口为17001、17003、17005

[root@VM-0-5-centos src]# redis-cli --cluster create ip:7000 ip:7001 ip:7002 ip:7003 ip:7004 ip:7005 --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 ip:7004 to ip:7000
Adding replica ip:7005 to ip:7001
Adding replica ip:7003 to ip:7002
>>> Trying to optimize slaves allocation for anti-affinity
[WARNING] Some slaves are in the same host as their master
M: b78ab698b9fe32f161a8af0e78396eb287060538 ip:7000
   slots:[0-5460] (5461 slots) master
M: 5487bd1cd8cbd182caac7e35441892757c8fc466 ip:7001
   slots:[5461-10922] (5462 slots) master
M: 71323348e2ac97dba519ea87d95d5b6765965122 ip:7002
   slots:[10923-16383] (5461 slots) master
S: 448115b6966ca44948f66d262142199b147c70d5 ip:7003
   replicates 71323348e2ac97dba519ea87d95d5b6765965122
S: 0e505c52b1d3be343b986e1e42979ade087c85a7 ip:7004
   replicates b78ab698b9fe32f161a8af0e78396eb287060538
S: a297e581f0f8d3091fb77a3d2e1bfd2213c0becb ip:7005
   replicates 5487bd1cd8cbd182caac7e35441892757c8fc466
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 ip:7000)
M: b78ab698b9fe32f161a8af0e78396eb287060538 ip:7000
   slots:[0-5460] (5461 slots) master
   1 additional replica(s)
M: 5487bd1cd8cbd182caac7e35441892757c8fc466 ip:7001
   slots:[5461-10922] (5462 slots) master
   1 additional replica(s)
S: 0e505c52b1d3be343b986e1e42979ade087c85a7 ip:7004
   slots: (0 slots) slave
   replicates b78ab698b9fe32f161a8af0e78396eb287060538
S: 448115b6966ca44948f66d262142199b147c70d5 ip:7003
   slots: (0 slots) slave
   replicates 71323348e2ac97dba519ea87d95d5b6765965122
M: 71323348e2ac97dba519ea87d95d5b6765965122 ip:7002
   slots:[10923-16383] (5461 slots) master
   1 additional replica(s)
S: a297e581f0f8d3091fb77a3d2e1bfd2213c0becb ip:7005
   slots: (0 slots) slave
   replicates 5487bd1cd8cbd182caac7e35441892757c8fc466
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.

测试数据插入

[root@VM-0-5-centos src]# redis-cli -c -h 外网ip -p 7000
ip:7000> set firstkey 2022-01-17
OK
ip:7000> set name xiong
-> Redirected to slot [5798] located at 42.194.195.235:7001
OK
ip:7001> set age 28
-> Redirected to slot [741] located at 42.194.195.235:7000
OK
ip:7000> set address jiangxi
OK
ip:7000>

查看对应的从库

[root@VM-0-5-centos src]# ./redis-cli -c -h 42.194.29.** -p 7004
42.194.29:7004> keys *
1) "firstkey"
42.194.29:7004> keys *
1) "firstkey"
42.194.29:7004> keys *
1) "address"
2) "age"
3) "firstkey"

查看集群状态

成功了