Springboot Redis 哨兵模式的实现示例

网友投稿 873 2022-09-04


Springboot Redis 哨兵模式的实现示例

目录Redis配置redis.conf配置sentinel.conf配置Springboot整合测试模拟redis宕机

Redis配置

redis.conf配置

由于服务器资源有限,我这里通过配置不同端口,模拟Redis集群,redis-server占用6379、6380、6381端口,redis-sentinel占用26379、26380、26381端口。

首先准备3份redis配置文件,分别取名redis6379.conf,redis6380.conf,redis6381.conf

redis6379.conf,6379端口作为master,需要修改的配置如下

protected-mode no #设置为NO,其他IP才可以访问

port 6379 #端口

daemonize yes

pidfile "/var/run/redis_6379.pid"

logfile "6379.log" #日志,若redis分布在不同服务器,不用修改

dbfilename "dump6379.rdb" #数据,若redis分布在不同服务器,不用修改

masterauth "admin123/*-" #从节点访问主节点时需要的密码

requirepass "admin123/*-" #redis密码,应用访问redis时需要

redis6380.conf,6380端口作为slave,需要设置主节点ip和port,需要修改的配置如下:

protected-mode no #设置为NO,其他IP才可以访问

port 6380 #端口

daemonize yes

pidfile "/var/run/redis_6380.pid"

logfile "6380.log" #日志,若redis分布在不同服务器,不用修改

dbfilename "dump6380.rdb" #数据,若redis分布在不同服务器,不用修改

replicaof 192.168.1.1 6379 #标记主节点ip+端口,IP设置为自己服务器IP地址即可

masterauth "admin123/*-" #从节点访问主节点时需要的密码

requirepass "admin123/*-" #redis密码,应用访问redis时需要

备注:slaveof 192.168.1.1 6379,这里需要设置成你自己的IP,可实现Redis 复制功能

redis6381.conf,6381端口作为slave,同上,需要修改的配置如下:

protected-mode no #设置为NO,其他IP才可以访问

port 6381 #端口

daemonize yes

pidfile "/var/run/redis_6381.pid"

logfile "6381.log" #日志,若redis分布在不同服务器,不用修改

dbfilename "dump6381.rdb" #数据,若redis分布在不同服务器,不用修改

replicaof 192.168.1.1 6379 #标记主节点ip+端口,IP设置为自己服务器IP地址即可

masterauth "admin123/*-" #从节点访问主节点时需要的密码

requirepass "admin123/*-" #redis密码,应用访问redis时需要

sentinel.conf配置

准备3分sentinel.conf配置文件,分别为sentinel26379.conf、sentinel26380.conf、sentinel26381.conf。

sentinel26379.conf,26379端口作为哨兵1,需要修改配置如下

port 26379 #端口

daemonize yes

pidfile "/var/run/redis-sentinel26379.pid"

logfile "/usr/local/bin/sentinelLogs/sentinel_26379.log"

#配置指示 Sentinel 去监视一个名为 mymaster 的主节点, 主节点的 IP 地址为 127.0.0.1 , 端口号为 6379 ,

#而将这个主服务器判断为失效至少需要 2 个 Sentinel 同意 (只要同意 Sentinel 的数量不达标,自动故障迁移就不会执行)

sentinel monitor mymaster 192.168.1.1 6379 2

sentinel auth-pass mymaster admin123/*- #哨兵访问主节点密码

protected-mode no

sentinel26380.conf,26380端口作为哨兵2,需要修改配置如下

port 26380 #端口

daemonize yes

pidfile "/var/run/redis-sentinel26380.pid"

logfile "/usr/local/bin/sentinelLogs/sentinel_26380.log"

#配置指示 Sentinel 去监视一个名为 mymaster 的主节点, 主节点的 IP 地址为 127.0.0.1 , 端口号为 6379 ,

#而将这个主服务器判断为失效至少需要 2 个 Sentinel 同意 (只要同意 Sentinel 的数量不达标,自动故障迁移就不会执行)

sentinel monitor mymaster 192.168.1.1 6379 2

sentinel auth-pass mymaster admin123/*- #哨兵访问主节点密码

protected-mode no

sentinel26381.conf,26381端口作为哨兵3,需要修改配置如下

port 26381 #端口

daemonize yes

pidfile "/var/run/redis-sentinel26381.pid"

logfile "/usr/local/bin/sentinelLogs/sentinel_26381.log"

#配置指示 Sentinel 去监视一个名为 mymaster 的主节点, 主节点的 IP 地址为 127.0.0.1 , 端口号为 6379 ,

#而将这个主服务器判断为失效至少需要 2 个 Sentinel 同意 (只要同意 Sentinel 的数量不达标,自动故障迁移就不会执行)

sentinel monitor mymaster 192.168.1.1 6379 2

sentinel auth-pass mymaster admin123/*- #哨兵访问主节点密码

protected-mode no

启动redis-server,redis-sentinel

[root@VM-20-5-centos bin]# redis-server redis6379.conf

[root@VM-20-5-centos bin]# redis-server redis6380.conf

[root@VM-20-5-centos bin]# redis-server redis6381.conf

[root@VM-20-5-centos bin]# redis-sentinel sentinel_26379.conf

[root@VM-20-5-centos bin]# redis-sentinel sentinel_26380.conf

[root@VM-20-5-centos bin]# redis-sentinel sentinel_26381.conf

查看状态,如下图所示,即为启动成功

[root@VM-20-5-centos mconfig]# redis-cli -p 26379

127.0.0.1:26379> sentinel masters

1) 1) "name"

2) "mymaster"

3) "ip"

4) "192.168.1.1"

5) "port"

6) "6379"

7) "runid"

127.0.0.1:26379> sentinel slaves mymaster

1) 1) "name"

2) "192.168.1.1:6381"

3) "ip"

4) "192.168.1.1"

5) "port"

6) "6381"

7) "runid"

8) ""

2) 1) "name"

2) "192.75.218.240:6380"

3) "ip"

4) "192.75.218.240"

5) "port"

127.0.0.1:26379>

Springboot整合

导入包

org.springframework.boot

spring-boot-starter-data-redis

properties配置

spring.redis.host=192.168.1.1

spring.redis.port=6379

spring.redis.password=admin123/*-

spring.redis.sentinel.master=mymaster

spring.redis.sentinel.password=admin123/*-

spring.redis.sentinel.nodes=192.168.1.1:26379,192.168.1.1:26380,192.168.1.1:26381

测试

代码示例

package com.mx.learnredis.controller;

import org.junit.jupiter.api.Test;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.boot.test.context.SpringBootTest;

import org.springframework.data.redis.core.RedisTemplate;

import java.util.Date;

@SpringBootTest

class UserControllerTest {

@Autowired

@Qualifier("redisTemplate")

private RedisTemplate redisTemplate;

@Test

public void test() throws InterruptedException {

redisTemplate.opsForValue().set("user", "xx");

while (true)

{

Thread.sleep(2000);

System.out.println("time "+new Date()+":" +redisTemplate.opsForValue().get("user"));

}

}

}

模拟redis宕机

idea控制台输出:

time Sat Jan 08 20:09:12 CST 2022:xxtime Sat Jan 08 20:09:14 CST 2022:xxtime Sat Jan 08 20:09:16 CST 2022:xxtime Sat Jan 08 20:09:18 CST 2022:xxtime Sat Jan 08 20:09:20 CST 2022:xxtime Sat Jan 08 20:09:22 CST 2022:xx

关闭掉主节点,登录linux服务器

[root@VM-20-5-centos mconfig]# ps -ef|grep redis

root 27881 1 0 17:19 ? 00:00:12 redis-server *:6380

root 27997 1 0 17:20 ? 00:00:17 redis-sentinel *:26379 [sentinel]

root 28017 1 0 17:20 ? 00:00:17 redis-sentinel *:26380 [sentinel]

root 28030 1 0 17:20 ? 00:00:17 redis-sentinel *:26381 [sentinel]

root 28471 1 0 20:13 ? 00:00:00 redis-server *:6381

root 28664 1 0 17:23 ? 00:00:12 redis-server *:6379

root 28753 11813 0 20:14 pts/1 00:00:00 grep --color=auto redis

[root@VM-20-5-centos mconfig]# kill -9 28664

[root@VM-20-5-centos mconfig]#

idea控制台输出,可看到重连日志,Success

time Sat Jan 08 20:15:02 CST 2022:xxtime Sat Jan 08 20:15:04 CST 2022:xx2022-01-08 20:15:05.010  INFO 7216 --- [xecutorLoop-1-3] i.l.core.protocol.ConnectionWatchdog     : Reconnecting, last destination was /192.168.1.1:63792022-01-08 20:15:07.211  WARN 7216 --- [ioEventLoop-4-4] i.l.core.protocol.ConnectionWatchdog     : Cannot reconnect to [192.168.1.1:6379]: Connection refused: no further information: /192.168.1.1:63792022-01-08 20:15:11.920  INFO 7216 --- [xecutorLoop-1-2] i.l.core.protocol.ConnectionWatchdog     : Reconnecting, last destination was 192.168.1.1:63792022-01-08 20:15:14.081  WARN 7216 --- [ioEventLoop-4-2] i.l.core.protocol.ConnectionWatchdog     : Cannot reconnect to [192.168.1.1:6379]: Connection refused: no further information: /192.168.1.1:63792022-01-08 20:15:18.617  INFO 7216 --- [xecutorLoop-1-4] i.l.core.protocol.ConnectionWatchdog     : Reconnecting, last destination was 192.168.1.1:63792022-01-08 20:15:20.767  WARN 7216 --- [ioEventLoop-4-4] i.l.core.protocol.ConnectionWatchdog     : Cannot reconnect to [192.168.1.1:6379]: Connection refused: no further information: /192.168http://.1.1:63792022-01-08 20:15:26.119  INFO 7216 --- [xecutorLoop-1-2] i.l.core.protocol.ConnectionWatchdog     : Reconnecting, last destination was 192.168.1.1:63792022-01-08 20:15:28.278  WARN 7216 --- [ioEventLoop-4-2] i.l.core.protocol.ConnectionWatchdog     : Cannot reconnect to [192.168.1.1:6379]: Connection refused: no further information: /192.168.1.1:63792022-01-08 20:15:33.720  INFO 7216 --- [xecutorLoop-1-2] i.l.core.protocol.ConnectionWatchdog     : Reconnecting, last destination was 192.168.1.1:63792022-01-08 20:15:35.880  WARN 7216 --- [ioEventLoop-4-2] i.l.core.protocol.ConnectionWatchdog     : Cannot reconnect to [192.168.1.1:6379]: Connection refused: no further information: /192.168.1.1:63792022-01-08 20:15:40.020  INFO 7216 --- [xecutorLoop-1-4] i.l.core.protocol.ConnectionWatchdog     : Reconnecting, last destination was 192.168.1.1:63792022-01-08 20:15:40.160  INFO 7216 --- [ioEventLoop-4-4] i.l.core.protocol.ReconnectionHandler    : Reconnected to 192.168.1.1:6381time Sat Jan 08 20:15:06 CST 2022:xx


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