1.redis主从创建（一主两从）：
在从节点上执行：slaveof 192.168.56.201 6379 #master的ip地址和端口
也可以在配置文件中配置：
slaveof 192.168.56.201 6379
确认：
[root@db1 ~]# redis-cli
127.0.0.1:6379> info replication
# Replication
role:master
connected_slaves:2
slave0:ip=192.168.56.202,port=6379,state=online,offset=1344537,lag=0
slave1:ip=192.168.56.203,port=6379,state=online,offset=1344537,lag=0
master_replid:78461067504e80e7adf61bd14ea1a385c38ca20c
master_replid2:0000000000000000000000000000000000000000
master_repl_offset:1344688
second_repl_offset:-1
repl_backlog_active:1
repl_backlog_size:10485760
repl_backlog_first_byte_offset:1
repl_backlog_histlen:1344688
2.创建目录：
mkdir -p /data/redis-26379/logs/
mkdir -p /data/redis-26379/run
3.编辑哨兵参数（scp都其它两个机器）：
vim /data/redis-26379/26379.conf
port 26379
daemonize yes
dir /data/redis-26379/
pidfile /data/redis-26379/redis_26379.pid
logfile /data/redis-26379/logs/26379.log
#bind填写本机ip地址和127.0.0.1
bind 192.168.56.201 127.0.0.1
sentinel monitor master-monitor1 192.168.56.201 6379 2
sentinel down-after-milliseconds master-monitor1 10000
sentinel parallel-syncs master-monitor1 1
sentinel failover-timeout master-monitor1 180000
4.启动哨兵节点：
redis-sentinel /data/redis-26379/26379.conf
登录查看信息：
redis-cli -p 26379
127.0.0.1:26379> info sentinel
# Sentinel
sentinel_masters:1
sentinel_tilt:0
sentinel_running_scripts:0
sentinel_scripts_queue_length:0
sentinel_simulate_failure_flags:0
master0:name=master-monitor1,status=ok,address=192.168.56.201:6379,slaves=2,sentinels=3
此时看到哨兵配置文件已经改变,自动发现slave：
[root@db1 redis-26379]# cat 26379.conf
port 26379
daemonize yes
dir "/data/redis-26379"
pidfile "/data/redis-26379/redis_26379.pid"
logfile "/data/redis-26379/logs/26379.log"
#bind 信息填写本机ip地址 和127.0.0.1
bind 192.168.56.201 127.0.0.1
sentinel myid 6ba1b2245916983baabaacf1be1eb0303a2a1b8b
sentinel deny-scripts-reconfig yes
sentinel monitor master-monitor1 192.168.56.202 6379 2
sentinel down-after-milliseconds master-monitor1 10000
# Generated by CONFIG REWRITE
sentinel config-epoch master-monitor1 2
sentinel leader-epoch master-monitor1 2
sentinel known-slave master-monitor1 192.168.56.201 6379
sentinel known-slave master-monitor1 192.168.56.203 6379
sentinel known-sentinel master-monitor1 192.168.56.203 26379 67202a457efa3d68e5ada2912375e40a0c9b5262
sentinel known-sentinel master-monitor1 192.168.56.202 26379 7a089d3c9e68851cc70c6c24c51df829a910195e
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