Redis哨兵模式安装部署

2020-04-09

Redis的部署方式有和多种，一般有单节点模式、主从模式、哨兵模式、集群模式等，一般生产环境中以哨兵模式和集群模式为主，哨兵模式是对主从模式的一种优化升级Redis在2.8版本中提供Sentinel。Redis Sentinel是Redis高可用（HA）的实现方案。

1、环境准备

下载地址：http://download.redis.io/releases/

版本：redis-5.0.5.tar.gz

IP	端口	角色
192.168.115.243	6379	主节点
192.168.115.243	6380	从节点
192.168.115.243	6381	从节点
192.168.115.243	26379	哨兵节点-1
192.168.115.243	26380	哨兵节点-2
192.168.115.243	26381	哨兵节点-3

2、主从数据节点

2.1、安装Redis

创建安装目录

1	mkdir /usr/local/redis-sentinel

上传redis-5.0.5.tar.gz安装包到新创建的目录下，解压安装包到当前目录

1	tar -zxvf redis-5.0.5.tar.gz

编译、安装到/usr/local/redis-sentinel目录下

1
2
3

cd /usr/local/redis-sentinel/redis-5.0.5
make
make PREFIX=/usr/local/redis-sentinel install

2.2、配置主节点

创建配置文件目录

mkdir -p /usr/local/redis-sentinel/conf
mkdir -p /usr/local/redis-sentinel/data
mkdir -p /usr/local/redis-sentinel/logs
cp redis.conf /usr/local/redis-sentinel/conf/redis-6379.conf

修改主节点的配置文件

1 2	cd /usr/local/redis-sentinel/conf vi redis-6379.conf

bind 0.0.0.0
port 6379
daemonize yes
pidfile /var/run/redis_6379.pid
logfile "/usr/local/redis-sentinel/logs/redis_6379.log"
dbfilename "dump-6379.rdb"
dir "/usr/local/redis-sentinel/data"

2.3、配置两个从节点

修改从节点的配置文件

1
2
3

cd /usr/local/redis-sentinel/conf/
cp redis-6379.conf redis-6380.conf 
cp redis-6379.conf redis-6381.conf

6380从节点配置

bind 0.0.0.0
port 6380
daemonize yes
pidfile /var/run/redis_6380.pid
logfile "/usr/local/redis-sentinel/logs/redis_6380.log"
dbfilename "dump-6380.rdb"
dir "/usr/local/redis-sentinel/data"
slaveof 192.168.115.243 6379

6381从节点配置

bind 0.0.0.0
port 6381
daemonize yes
pidfile /var/run/redis_6381.pid
logfile "/usr/local/redis-sentinel/logs/redis_6381.log"
dbfilename "dump-6381.rdb"
dir "/usr/local/redis-sentinel/data"
slaveof 192.168.115.243 6379

2.4、启动三个节点

cd /usr/local/redis-sentinel/bin/
./redis-server ../conf/redis-6379.conf
./redis-server ../conf/redis-6380.conf
./redis-server ../conf/redis-6381.conf

查看主从关系

1	./redis-cli -h 192.168.115.243 -p 6379 info replication

至此redis的主从模式就已经部署成功

3、哨兵节点部署

三个哨兵节点的配置是一样的

[root@node3 redis-5.0.5]# cd /usr/local/redis-sentinel/redis-5.0.5
[root@node3 redis-5.0.5]# cp sentinel.conf ../conf/sentinel-26379.conf
[root@node3 redis-5.0.5]# cp sentinel.conf ../conf/sentinel-26380.conf
[root@node3 redis-5.0.5]# cp sentinel.conf ../conf/sentinel-26381.conf

配置26379

port 26379
daemonize yes
pidfile /var/run/redis-sentinel-26379.pid
logfile "/usr/local/redis-sentinel/logs/sentinel-26379.log"
sentinel monitor mymaster 192.168.115.243 6379 2
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster sentinel failover-timeout mymaster 180000

配置26380

port 26380
daemonize yes
pidfile /var/run/redis-sentinel-26380.pid
logfile "/usr/local/redis-sentinel/logs/sentinel-26380.log"
sentinel monitor mymaster 192.168.115.243 6379 2
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster sentinel failover-timeout mymaster 180000

配置26381

port 26381
daemonize yes
pidfile /var/run/redis-sentinel-26381.pid
logfile "/usr/local/redis-sentinel/logs/sentinel-26381.log"
sentinel monitor mymaster 192.168.115.243 6379 2
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster sentinel failover-timeout mymaster 180000

启动三个哨兵节点

cd /usr/local/redis-sentinel/bin/
./redis-sentinel ../conf/sentinel-26379.conf 
./redis-sentinel ../conf/sentinel-26380.conf 
./redis-sentinel ../conf/sentinel-26381.conf

查看状态