Redis Sentinel

Wed, 30 Oct 2019 11:37:36 +0800

环境

主机名	地址	操作系统	初始状态
sentinel86	10.1.14.86	CentOS7.4	null
redis87	10.1.14.87	CentOS7.4	master
redis88	10.1.14.88	CentOS7.4	slave
redis89	10.1.14.89	CentOS7.4	slave

安装 redis

在全部服务器上安装 redis

1
2

yum install epel-release
yum install redis

redis master 配置

在 redis87 上修改 /etc/redis.conf
1

bind 0.0.0.0

redis slave 配置

在 redis88 和 redis89 上修改 /etc/redis.conf
1 2

bind 0.0.0.0 slaveof 10.1.14.87 6379

redis sentinel 配置

在 sentinel86 上创建三个 sentinel 配置文件

cd /etc/
cp redis-sentinel.conf redis-sentinel-16379.conf
cp redis-sentinel.conf redis-sentinel-26379.conf
mv redis-sentinel.conf redis-sentinel-36379.conf
chown redis.root redis-sentinel-?6379.conf

修改 /etc/redis-sentinel-16379.conf

bind 0.0.0.0
port 16379
dir /var/log/redis/16379
sentinel monitor mymaster 10.1.14.87 6379 2
sentinel down-after-milliseconds mymaster 8000
logfile /var/log/redis/16379/sentinel.log

修改 /etc/redis-sentinel-26379.conf

bind 0.0.0.0
port 26379
dir /var/log/redis/26379
sentinel monitor mymaster 10.1.14.87 6379 2
sentinel down-after-milliseconds mymaster 8000
logfile /var/log/redis/26379/sentinel.log

修改 /etc/redis-sentinel-36379.conf

bind 0.0.0.0
port 36379
dir /var/log/redis/36379
sentinel monitor mymaster 10.1.14.87 6379 2
sentinel down-after-milliseconds mymaster 8000
logfile /var/log/redis/36379/sentinel.log

创建日志目录

1
2
3

cd /var/log/redis/
mkdir 16379 26379 36379
chown redis.redis ?6379 -R

创建两个 sentinel service 文件

cd /usr/lib/systemd/system/
cp redis-sentinel.service redis-sentinel-16379.service
cp redis-sentinel.service redis-sentinel-26379.service
mv redis-sentinel.service redis-sentinel-36379.service

修改 /usr/lib/systemd/system/redis-sentinel-16379.service

1
2

ExecStart=/usr/bin/redis-sentinel /etc/redis-sentinel-16379.conf --daemonize no
ExecStop=/usr/libexec/redis-shutdown redis-sentinel-16379

修改 /usr/lib/systemd/system/redis-sentinel-26379.service

1
2

ExecStart=/usr/bin/redis-sentinel /etc/redis-sentinel-26379.conf --daemonize no
ExecStop=/usr/libexec/redis-shutdown redis-sentinel-26379

修改 /usr/lib/systemd/system/redis-sentinel-36379.service

1
2

ExecStart=/usr/bin/redis-sentinel /etc/redis-sentinel-36379.conf --daemonize no
ExecStop=/usr/libexec/redis-shutdown redis-sentinel-36379

更新服务
1

systemctl daemon-reload

启动 redis 服务

在 redis87、redis88 和 redis89 上启动 redis 服务

1
2
3

systemctl start redis
# 查看当前节点主从信息
redis-cli info replication

启动 redis sentinel 监控

在 sentinel86 上启动 sentinel 监管程序

1
2
3

systemctl start redis-sentinel-16379
systemctl start redis-sentinel-26379
systemctl start redis-sentinel-36379

哨兵 on Colben Notes