redis4.0.6集群搭建

文件环境：CentOS7 + redis4.0.6

先去官网下载redis：https://redis.io/，然后上传到你的虚拟机，我上传到了/mysoft

先解压-》然后进入主目录-》安装

安装完，进入src目录，将文件复制到目录

进入目录，在这里我们建立一个redis集群文件夹，以及用来存放节点配置文件的三个文件夹7001,7002,7003。

将redis主目录里面的配置文件拷贝到这三个文件夹

vim /redis.conf

注意：如果不把bind的127.0.0.1改成网络ip，之后进行的工作会报错，如下，can't connect ...

对于上面的步骤，两台机器各安装一个redis，六个配置文件都要改，注意ip和端口。

接下来我们的目标是，可是这个需要ruby环境（一台机器安装即可）。更需要2.2.2以上版本，然而centos7只能yum2.0.0，所以为了不让大家采坑，我们跳过网络上的教程，如下

，如果大家不信，我给你们看这种方式安装的问题

打开rvm官网：http://rvm.io/

复制上面两段话到虚拟机

安装完之后

可以看到最高2.4.1（与官网不太一致哦注意，此时官网已经公布2.5.0）

下面安装

开启防火墙端口

[root@localhost redis-cluster]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost redis-cluster]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost redis-cluster]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost redis-cluster]# systemctl restart firewalld

[root@localhost redis-cluster]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost redis-cluster]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost redis-cluster]# firewall-cmd --zone=public --add-port=/tcp --permanent
success
[root@localhost redis-cluster]# systemctl restart firewalld

netstat -tunlp | grep redis

利用上面的命令查看启动情况

最后执行集群操作（安装ruby就是为了安装redis gem，而redis gem 是为了能运行redis-trib.rb）

[root@localhost redis-cluster]# redis-trib.rb create --replicas  192.168.127.129: 192.168.127.129: 192.168.127.129: 192.168.127.130: 192.168.127.130: 192.168.127.130:

>>> Creating cluster
>>> Performing hash slots allocation on  nodes...
Using  masters:
192.168.127.129:
192.168.127.130:
192.168.127.129:
Adding replica 192.168.127.130: to 192.168.127.129:
Adding replica 192.168.127.129: to 192.168.127.130:
Adding replica 192.168.127.130: to 192.168.127.129:
M: 0383b1fbe71d8f4349a094711896632f5c54b40c 192.168.127.129:
   slots:- ( slots) master
M: 3811c6a22253dfc65d251d9408eb98d67e1452dd 192.168.127.129:
   slots:- ( slots) master
S: cd061c004d5e369674959ac904c8388f81ae9d9b 192.168.127.129:
   replicates 822306088f036ee5e27fbe53420e2160f06408ea
M: 822306088f036ee5e27fbe53420e2160f06408ea 192.168.127.130:
   slots:- ( slots) master
S: 7580e123ca9eff829540e5e7cd34afcbab5b2b64 192.168.127.130:
   replicates 0383b1fbe71d8f4349a094711896632f5c54b40c
S: 7914649b247bd38dacf8adb5d16460d02b02fb05 192.168.127.130:
   replicates 3811c6a22253dfc65d251d9408eb98d67e1452dd
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 192.168.127.129:)
M: 0383b1fbe71d8f4349a094711896632f5c54b40c 192.168.127.129:
   slots:- ( slots) master
    additional replica(s)
S: cd061c004d5e369674959ac904c8388f81ae9d9b 192.168.127.129:
   slots: ( slots) slave
   replicates 822306088f036ee5e27fbe53420e2160f06408ea
S: 7914649b247bd38dacf8adb5d16460d02b02fb05 192.168.127.130:
   slots: ( slots) slave
   replicates 3811c6a22253dfc65d251d9408eb98d67e1452dd
M: 3811c6a22253dfc65d251d9408eb98d67e1452dd 192.168.127.129:
   slots:- ( slots) master
    additional replica(s)
M: 822306088f036ee5e27fbe53420e2160f06408ea 192.168.127.130:
   slots:- ( slots) master
    additional replica(s)
S: 7580e123ca9eff829540e5e7cd34afcbab5b2b64 192.168.127.130:
   slots: ( slots) slave
   replicates 0383b1fbe71d8f4349a094711896632f5c54b40c
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All  slots covered.

192.168.127.129:> cluster nodes

查看集群状态

不难发现，集群中一个主节点set了一个值，其它主节点能获取到，从节点也能获取到。

到此，集群搭建完毕