数据管理与分析-Redis部署:配置哨兵

时间：2024-04-24 11:34:42

数据管理与分析

配置哨兵

创建哨兵数据目录
```
# mkdir /data/redis-6.0.0/data/sentinel
```

新增配置文件

# vim /opt/redis-6.0.0/config/sentinel/sentinel.conf

分别在主从redis创建sentinel配置文件（3个实例一样）

port 16379
daemonize yes
pidfile /var/run/redis-sentinel.pid
logfile /data/redis-6.0.0/logs/sentinel.log
dir /data/redis-6.0.0/data/sentinel
sentinel deny-scripts-reconfig yes
#配置主redis的地址,“2”表示集群中有2个Sentinel认为master退出了就切换
sentinel monitor redisMaster 192.168.0.82 6379 2
sentinel auth-pass redisMaster Mypwd@123456
sentinel config-epoch redisMaster 1
sentinel leader-epoch redisMaster 1

启动哨兵，分别在主从redis创建redis-sentinel系统启动文件

# vim /etc/systemd/system/redis-sentinel.service
[Unit]
Description=The redis-sentinel Process Manager
After=syslog.target network.target
[Service]
Type=forking
PIDFile=/var/run/redis-sentinel.pid
ExecStart=/opt/redis-6.0.0/bin/redis-sentinel /opt/redis-6.0.0/config/sentinel/sentinel.conf
ExecStop=/opt/redis-6.0.0/bin/redis-cli -h 127.0.0.1 -p 16379 shundown
PrivateTmp=true
[Install]
WantedBy=multi-user.target

重新加载systemctl配置
```
# systemctl daemon-reload
```

设置跟随linux启动，并启动es

# systemctl start redis-sentinel && systemctl enable redis-sentinel

查看启动日志

# cat /data/redis-6.0.0/logs/sentinel.log

图2 查看启动日志

检查redis主从状态

# redis-cli -h 127.0.0.1 -p 6379 -a Mypwd@123456 info replication

图3 查看启动日志

# Replication
role:master          #角色master或者slave
connected_slaves:2    #连接的slave个数
min_slaves_good_slaves:2
slave0:ip=192.168.0.228 ,port=6379,state=online,offset=288218,lag=0   #slave1节点信息
slave1:ip=192.168.0.56,port=6379,state=online,offset=288078,lag=1   #slave2节点信息
master_replid:2ac8c63f0185a38189010b192e42b761e69f549a
master_replid2:4490ff668a9d41d5636e6a382ff1e80ca31892cf
master_repl_offset:288218
master_repl_meaningful_offset:288218
second_repl_offset:69703
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:288218

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