redis版本:redis-5.0.3.tar.gz
操作系统:完全新安装的centos7.6系统
使用一台虚拟机模拟6个redis节点,3个master,3个slave,虚拟机IP为192.168.220.11
和使用不同的IP创建集群基本过程一致,为了方便,就不创建多个虚拟机了。
开始搭建:
yum install -y wget gcc
systemctl stop firewalld.service
systemctl disable firewalld.service
cd /opt
wget http://download.redis.io/releases/redis-5.0.3.tar.gz
tar zxvf redis-5.0.3.tar.gz
mv redis-5.0.3 redis
cd redis
解压后目录结构如下:
![](http://upload-images.jianshu.io/upload_images/12570324-f43231c117242fb7.png?imageMogr2/auto-orient/strip|imageView2/2/w/648/format/webp)
编译安装:
make MALLOC=libc
make install
![](http://upload-images.jianshu.io/upload_images/12570324-7f9461557dc9d251.png?imageMogr2/auto-orient/strip|imageView2/2/w/524/format/webp)
src目录包含了redis server和redis cli的相关命令脚本,将该路径加入到PATH环境变量当中,方便使用
cd /opt/redis
mkdir cluster # 创建redis实例根目录
cd cluster
mkdir 7001 # 创建具体redis实例相关目录,指定其端口号为7001
cd 7001
cp /opt/redis/redis.conf . #复制配置文件,修改之后当作当前redis实例的启动配置
mkdir data # 创建数据存储目录
修改配置文件文件,最小化修改配置
下面为需要修改的配置项以及说明
port 7001 # 客户端连接端口
bind 192.168.220.11 #实例绑定的IP地址
dir /opt/redis/cluster/7001/data # redis实例数据配置存储位置
daemonize yes # 是否以后台进程的方式启动redis实例
pidfile pidfile /var/run/redis_7001.pid # 指定该进程pidfile
cluster-enabled yes # 开启集群模式
cluster-config-file # 集群中该实例的配置文件,该文件会在data目录下生成
appendonly yes # 开启aop日志
protected-mode no # 关闭保护模式
requirepass cyclone # master开启密码保护
masterauth cyclone # replica同master交互密码
接下来按照同样的方式创建7002,7003,7004,7005,7006的文件夹,修改配置文件
依次启动redis实例
redis-server /opt/redis/cluster/7001/redis.conf
redis-server /opt/redis/cluster/7002/redis.conf
redis-server /opt/redis/cluster/7003/redis.conf
redis-server /opt/redis/cluster/7004/redis.conf
redis-server /opt/redis/cluster/7005/redis.conf
redis-server /opt/redis/cluster/7006/redis.conf
查看启动结果
![](http://upload-images.jianshu.io/upload_images/12570324-ac5b3e6155fda630.png?imageMogr2/auto-orient/strip|imageView2/2/w/1001/format/webp)
集群的创建,将redis实例联系起来,创建一个集群
redis-cli -a cyclone --cluster create --cluster-replicas 1 192.168.220.11:7001 192.168.220.11:7002 192.168.220.11:7003 192.168.220.11:7004 192.168.220.11:7005 192.168.220.11:7006
输出如下:
![](http://upload-images.jianshu.io/upload_images/12570324-4c0e78101acc0a57.png?imageMogr2/auto-orient/strip|imageView2/2/w/1163/format/webp)
![](http://upload-images.jianshu.io/upload_images/12570324-8a4c0161c3e61e3b.png?imageMogr2/auto-orient/strip|imageView2/2/w/859/format/webp)
一些slave和master在相同的物理主机上,所以会出现一些警告,这个不影响。
连接到集群的某个节点:
redis-cli -a cyclone -c -h 192.168.220.11 -p 7001
![](http://upload-images.jianshu.io/upload_images/12570324-90a1177e0cb3568e.png?imageMogr2/auto-orient/strip|imageView2/2/w/1060/format/webp)
查看集群相关信息:
![](http://upload-images.jianshu.io/upload_images/12570324-8a1d80b50fc718c3.png?imageMogr2/auto-orient/strip|imageView2/2/w/729/format/webp)
查看集群节点信息:
![](http://upload-images.jianshu.io/upload_images/12570324-751e3cdc0cd01fa6.png?imageMogr2/auto-orient/strip|imageView2/2/w/1200/format/webp)
集群相关操作:
1.关闭集群的某个节点,比如关闭端口号为7001的实例:
redis-cli -a cyclone -c -h 192.168.220.11 -p 7001 shutdown
查看结果
![](http://upload-images.jianshu.io/upload_images/12570324-5d93d8dffe736e63.png?imageMogr2/auto-orient/strip|imageView2/2/w/1200/format/webp)
关闭之后,使用redis-server /opt/redis/cluster/7001/redis.conf命令可以将实例重新启动,启动完成之后,自动加入到集群当中
![](http://upload-images.jianshu.io/upload_images/12570324-e11ffea72dffe717.png?imageMogr2/auto-orient/strip|imageView2/2/w/1200/format/webp)
2.集群的关闭
逐个关闭redis实例进程即可
查找redis实例进程号
ps -ef | grep redis
![](http://upload-images.jianshu.io/upload_images/12570324-2cd4fd949922f477.png?imageMogr2/auto-orient/strip|imageView2/2/w/1025/format/webp)
关闭redis进程,使用kill -9 ${进程号},如果需要关闭多个进程,进程号之间空格隔开即可
kill -9 10252 10257 10262 10267 10272 10294
也可执行以下命令来关闭redis进程
pkill -9 redis
3.redis集群的重新启动
保留原来的数据:
逐个关闭redis实例,再逐个的启动即可。
丢弃原来的数据:
关闭实例,清空实例中数据存放目录的所有内容,然后逐个启动实例,在任意一个实例上执行集群的创建命令即可,本质上就是创建一个新的集群
清空数据存储目录内容:
rm -rf /opt/redis/cluster/7001/data/*
rm -rf /opt/redis/cluster/7002/data/*
rm -rf /opt/redis/cluster/7003/data/*
rm -rf /opt/redis/cluster/7004/data/*
rm -rf /opt/redis/cluster/7005/data/*
rm -rf /opt/redis/cluster/7006/data/*
启动实例:
redis-server /opt/redis/cluster/7001/redis.conf
redis-server /opt/redis/cluster/7002/redis.conf
redis-server /opt/redis/cluster/7003/redis.conf
redis-server /opt/redis/cluster/7004/redis.conf
redis-server /opt/redis/cluster/7005/redis.conf
redis-server /opt/redis/cluster/7006/redis.conf
执行集群创建命令:
redis-cli -a cyclone --cluster create --cluster-replicas 1 192.168.220.11:7001 192.168.220.11:7002 192.168.220.11:7003 192.168.220.11:7004 192.168.220.11:7005 192.168.220.11:7006