redis（3）主从与集群

一、主从架构

yum安装的redis

cd /etc/
cp redis.conf /etc/slave.conf
vim slave.conf
    bind 192.168.42.7
    slaveof 192.168.42.7 6379
    port 6380
[root@localhost etc]# systemctl restart redis   重启redis
[root@localhost etc]# ps -ef | grep 'redis'       查看进程
redis     13055      1  0 06:18 ?        00:00:00 /usr/bin/redis-server 192.168.42.7:6379
root      13059  12945  0 06:18 pts/0    00:00:00 grep --color=auto redis
[root@localhost etc]# redis-server slave.conf    启动slave。conf
[root@localhost etc]# ps -ef | grep 'redis'
redis     13055      1  0 06:18 ?        00:00:00 /usr/bin/redis-server 192.168.42.7:6379
root      13061      1  0 06:19 ?        00:00:00 redis-server 192.168.42.7:6380
root      13067  12945  0 06:19 pts/0    00:00:00 grep --color=auto redis

主节点执行更新操作，从节点会有相应的备份；从节点只可读（readonly），不能添加数据。

二、集群

mkdir conf

#!/bin/bash
for i in `seq 6`
do
        touch 700$i.conf
done

vim 7001.conf    #修改配置文件
port 7001            #绑定端口
bind 192.168.42.7   绑定对外连接提供的ip
daemonize yes       #开启守护进程
pidfile 7001.pid       #进程文件名
cluster-enabled yes     #是否是集群
cluster-config-file 7001_node.conf    #集群配置文件
cluster-node-timeout 15000       集群连接超时时间
appendonly yes    #数据持久化类型

#!/bin/bash
for i in `seq 6`
do
        redis-server 700$i.conf
done

redis-cli --cluster create 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 127.0.0.1:7006 127.0.0.1:7007 127.0.0.1:7008 --cluster-replicas 1

[root@localhost ~]# redis-cli -p 7001 -c -h 192.168.42.7
192.168.42.7:7001> keys *
(empty list or set)
192.168.42.7:7001> set username jamhsiao
-> Redirected to slot [14315] located at 192.168.42.7:7003                                              成功
OK
192.168.42.7:7003> set name momo
-> Redirected to slot [5798] located at 192.168.42.7:7002
OK