一、Redis集群(Linux搭建)
2018年十月 Redis 发布了稳定版本的 5.0 版本，推出了各种新特性，其中一点是放弃 Ruby的集群方式，改为 使用 C语言编写的 redis-cli的方式，是集群的构建方式复杂度大大降低。
Redis集群
二、创建集群
在一台 Linux 服务器上搭建有6个节点的 Redis集群。
- 下载源码并解压编译
wget http://download.redis.io/releases/redis-5.0.0.tar.gz
tar xzf redis-5.0.0.tar.gz
cd redis-5.0.0
make
- 创建6个Redis配置文件
6个配置文件不能在同一个目录，此处我们定义如下：
/root/software/redis/redis-cluster-conf/7001/redis.conf
/root/software/redis/redis-cluster-conf/7002/redis.conf
/root/software/redis/redis-cluster-conf/7003/redis.conf
/root/software/redis/redis-cluster-conf/7004/redis.conf
/root/software/redis/redis-cluster-conf/7005/redis.conf
/root/software/redis/redis-cluster-conf/7006/redis.conf
配置文件的内容为：
port 7001 #端口
cluster-enabled yes #启用集群模式
cluster-config-file nodes.conf
cluster-node-timeout 5000 #超时时间
appendonly yes
daemonize yes #后台运行
protected-mode no #非保护模式
pidfile /var/run/redis_7001.pid
其中 port 和 pidfile 需要随着 文件夹的不同调增。
- 启动节点
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7001/redis.conf
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7002/redis.conf
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7003/redis.conf
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7004/redis.conf
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7005/redis.conf
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7006/redis.conf
- 启动集群
/root/software/redis/redis-5.0.0/src/redis-cli --cluster create 192.168.2.40:7001 192.168.2.40:7002 192.168.2.40:7003 192.168.2.40:7004 192.168.2.40:7005 192.168.2.40:7006 --cluster-replicas 1
二、常用操作
1、关闭集群
redis5 提供了关闭集群的工具，在如下目录：
/root/software/redis/redis-5.0.0/utils/create-cluster
打开此文件修改端口为我们自己的：
修改端口
端口PROT设置为7000，NODES为6，工具会自动累加1 生成 7001-7006 六个节点 用于操作。
修改后，执行如下命令关闭集群：
/root/software/redis/redis-5.0.0/utils/create-cluster/create-cluster stop
2、 重新启动集群
/root/software/redis/redis-5.0.0/utils/create-cluster/create-cluster start
3、使用脚本文件启动集群
#!/bin/sh
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7001/redis.conf
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7002/redis.conf
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7003/redis.conf
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7004/redis.conf
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7005/redis.conf
/root/software/redis/redis-5.0.0/src/redis-server /root/software/redis/redis-cluster-conf/7006/redis.conf
/root/software/redis/redis-5.0.0/src/redis-cli --cluster create 192.168.2.40:7001 192.168.2.40:7002 192.168.2.40:7003 192.168.2.40:7004 192.168.2.40:7005 192.168.2.40:7006 --cluster-replicas 1
