Redis6的主从复制 哨兵模式(sentinel)—反客为主自动版

redis6的安装详情及用法详见 >>>> Linux系统下的Redis的安装以及使用

主机数据更新后根据配置和策略， 自动同步到备机的master/slaver机制，Master以写为主，Slave以读为主

可以实现 读写分离，性能扩展 容灾快速恢复 等功能

环境：

centos7

主机1：127.0.0.1 6379

主机2：127.0.0.1 6380

主机3：127.0.0.1 6381

1、复制三份redis.conf文件

分别改名为redis6379.conf redis6380.conf redis6381.conf

2、分别修改以下配置文件的内容

include /myredis/redis.conf
pidfile /var/run/redis_6379.pid
port 6379
dbfilename dump6379.rdb

include /myredis/redis.conf
pidfile /var/run/redis_6380.pid
port 6380
dbfilename dump6380.rdb

include /myredis/redis.conf
pidfile /var/run/redis_6381.pid
port 6381
dbfilename dump6381.rdb

3、启动三台Redis服务器

[root@iZ2ze2rikqlh3ql1n2cw61Z bin]# kill -9 57468
[root@iZ2ze2rikqlh3ql1n2cw61Z bin]# ./redis-server /myredis/redis6379.conf 
[root@iZ2ze2rikqlh3ql1n2cw61Z bin]# ./redis-server /myredis/redis6380.conf 
[root@iZ2ze2rikqlh3ql1n2cw61Z bin]# ./redis-server /myredis/redis6381.conf

4、查看系统进程，看三台Redis是否启动成功

[root@iZ2ze2rikqlh3ql1n2cw61Z bin]# ps -ef | grep redis
root       58188       1  0 07:26 ?        00:00:00 ./redis-server *:6379
root       58194       1  0 07:26 ?        00:00:00 ./redis-server *:6380
root       58200       1  0 07:26 ?        00:00:00 ./redis-server *:6381
root       58209   58052  0 07:27 pts/0    00:00:00 grep --color=auto redis

5、查看三台主机运行情况

info replication #打印主从复制的相关信息

6379信息

[root@iZ2ze2rikqlh3ql1n2cw61Z bin]# ./redis-cli -p 6379
127.0.0.1:6379> info replication
NOAUTH Authentication required.
127.0.0.1:6379> auth 123456
OK
127.0.0.1:6379> info replication
# Replication
role:master
connected_slaves:0
master_failover_state:no-failover
master_replid:fbd16328dcd4296f8347b0b15934aced272f01b3
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:0
second_repl_offset:-1
repl_backlog_active:0
repl_backlog_size:1048576
repl_backlog_first_byte_offset:0
repl_backlog_histlen:0

6380信息

[root@iZ2ze2rikqlh3ql1n2cw61Z bin]# ./redis-cli -p 6380
127.0.0.1:6380> auth 123456
OK
127.0.0.1:6380> info replication
# Replication
role:master
connected_slave