redis集群搭建

Redis集群部署

要让集群正常工作至少需要3个主节点，在这里我们要创建6个redis节点，其中三个为主节点，三个为从节点，对应的redis节点的ip和端口对应关系如下:

127.0.0.1:7000
127.0.0.1:7001
127.0.0.1:7002
127.0.0.1:7003
127.0.0.1:7004
127.0.0.1:7005

1：下载redis。官网下载5.0.0版本

下载地址：http://download.redis.io/releases//redis-5.0.0.tar.gz
redis相关网站：
官网： http://redis.io
中文网：http://www.redis.cn/
文档：http://redisdoc.com/

2：上传服务器，解压，编译

tar -zxvf redis-5.0.0.tar.gz
mv redis-5.0.0  /usr/local/redis5.0
cd /usr/local/redis5.0
make
make install

3：创建集群需要的目录

mkdir -p /usr/local/cluster
cd /usr/local/cluster
mkdir 7000
mkdir 7001
mkdir 7002
mkdir 7003
mkdir 7004
mkdir 7005

4：修改配置文件redis.conf

cp /usr/local/redis5.0/redis.conf  /usr.local/cluster
vi redis.conf

修改配置文件中的下面选项

port 7000
daemonize yes
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes


requirepass 密码

修改完redis.conf配置文件中的这些配置项之后把这个配置文件分别拷贝到7000/7001/7002/7003/7004/7005目录下面

cp /usr/local/cluster/redis.conf /usr/local/cluster/7000
cp /usr/local/cluster/redis.conf /usr/local/cluster/7001
cp /usr/local/cluster/redis.conf /usr/local/cluster/7002
cp /usr/local/cluster/redis.conf /usr/local/cluster/7003
cp /usr/local/cluster/redis.conf /usr/local/cluster/7004
cp /usr/local/cluster/redis.conf /usr/local/cluster/7005

注意：拷贝完成之后要修改7001/7002/7003/7004/7005目录下面redis.conf文件中的port参数，分别改为对应的文件夹的名称

5：分别启动这6个redis实例

cd /usr/local/cluster/7000
redis-server redis.conf
cd /usr/local/cluster/7001
redis-server redis.conf
cd /usr/local/cluster/7002
redis-server redis.conf
cd /usr/local/cluster/7003
redis-server redis.conf
cd /usr/local/cluster/7004
redis-server redis.conf
cd /usr/local/cluster/7005
redis-server redis.conf

启动之后使用命令查看redis的启动情况ps -ef|grep redis

6: 创建集群命令

先关闭redis进程

./redis-cli  --cluster  create   127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 --cluster-replicas 1 

然后有提示输入的 yes 就行

--cluster-replicas 后面的数字是几个主机

7：使用redis-cli命令进入集群环境

./redis-cli -c -p 7000

如有密码需要添加 -a 密码

shell脚本
启动脚本

#!/bin/bash
redis_path="/usr/local/cluster/"
cluster_num=`ps aux | grep redis | wc -l`
if [ "${cluster_num}" -le 0 ]
then
echo -e "===== Success: Has killed all cluster progress."
else
pkill -9 redis
fi

cd /usr/local/cluster/7000/
./redis-server /usr/local/cluster/7000/redis.conf stop
cd /usr/local/cluster/7001/
./redis-server /usr/local/cluster/7001/redis.conf
cd /usr/local/cluster/7002/
./redis-server /usr/local/cluster/7002/redis.conf
cd /usr/local/cluster/7003/
./redis-server /usr/local/cluster/7003/redis.conf
cd /usr/local/cluster/7004/
./redis-server /usr/local/cluster/7004/redis.conf
cd /usr/local/cluster/7005/
./redis-server /usr/local/cluster/7005/redis.conf