redis5.0 哨兵

redis5.0 一主二从三哨兵

一  redis:是完全开源免费的，遵守BSD协议，是一个高可用的key-value数据库
有3个特点
1.支持数据持久化，可以将内存中的数据保存在磁盘中，重启后可以再次加载
2.不仅仅支持简单的key-value类型的数据，同时还提供list set zset hash等数据结构的存储
3.支持数据库备份，即master-slave模式的数据库备份。


二  环境介绍 CentOS Linux release 7.6.1810 (Core)
192.168.1.115 主+Sentinel      redis端口：6379 Sentinel端口：26379
192.168.1.114 从+Sentinel      redis端口：6379 Sentinel端口：26379
192.168.1.116 从+Sentinel      redis端口：6379 Sentinel端口：26379

三  安装redis服务

1.安装依赖（3台）

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yum install gcc* -y

2.下载redis安装（3台）

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wget http://download.redis.io/releases/redis-5.0.5.tar.gz

3.解压编译（3台）

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tar zxvf redis-5.0.5.tar.gz -C /usr/local/
cd /usr/local/redis-5.0.5
make

 

4.创建redis 数据目录 日志目录（3台）

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mkdir -p /opt/redis/{data,conf,redis-log,sentinel-log}

 5.移动配置文件（3台）

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cd /usr/local/redis-5.0.5/<br>cat redis.conf | grep -v ^#|grep -v ^$ >/opt/redis/conf/redis.conf

 6.修改配置文件redis.conf（主）

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#修改配置
bind 192.168.1.115
dir "/opt/redis/data"
daemonize yes
logfile "/opt/redis/redis-log/redis.log"
#增加配置
requirepass "123.456.789"
masterauth 123.456.789

 

   修改配置文件redis.conf（从）

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#修改配置
bind 192.168.1.114
dir "/opt/redis/data"
daemonize yes
logfile "/opt/redis/redis-log/redis.log"
#增加配置
requirepass "123.456.789"
masterauth 123.456.789
slaveof 192.168.1.115 6379

 

 

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#修改配置
bind 192.168.1.116
dir "/opt/redis/data"
daemonize yes
logfile "/opt/redis/redis-log/redis.log"
#增加配置
requirepass "123.456.789"
masterauth 123.456.789
slaveof 192.168.1.115 6379

 

 7.把启动文件放在/usr/local/bin方便启动（3台）

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[root@redis-node3 opt]# cp /usr/local/redis-5.0.5/src/redis-server  /usr/local/bin/
[root@redis-node3 opt]# cp /usr/local/redis-5.0.5/src/redis-cli  /usr/local/bin/

 8.启动（3台）

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redis-server  /opt/redis/conf/redis.conf

 9.测试

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#查看集群是否正常<br>[root@redis-node1 ~]#  redis-cli  -h 192.168.1.115 -p 6379 -a 123.456.789 info Replication<br>Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.<br># Replication<br>role:master<br>connected_slaves:2<br>slave0:ip=192.168.1.114,port=6379,state=online,offset=906,lag=0<br>slave1:ip=192.168.1.116,port=6379,state=online,offset=906,lag=0<br>master_replid:4ac62473efb8c3767bbd2cd0e1754c4e8d2980d1<br>master_replid2:0000000000000000000000000000000000000000<br>master_repl_offset:906<br>second_repl_offset:-1<br>repl_backlog_active:1<br>repl_backlog_size:1048576<br>repl_backlog_first_byte_offset:1<br>repl_backlog_histlen:906<br><br>[root@redis-node1 ~]# redis-cli  -h 192.168.1.115 -p 6379 -a 123.456.789
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
192.168.1.115:6379> AUTH 123.456.789
OK
192.168.1.115:6379> set k1 v1
OK
192.168.1.115:6379> exit
[root@redis-node1 ~]#  redis-cli  -h 192.168.1.114 -p 6379 -a 123.456.789
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
192.168.1.114:6379> AUTH 123,456,789
(error) ERR invalid password
192.168.1.114:6379> AUTH 123.456.789
OK
192.168.1.114:6379> get k1
"v1"
192.168.1.114:6379> exit
[root@redis-node1 ~]#  redis-cli  -h 192.168.1.116 -p 6379 -a 123.456.789
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
192.168.1.116:6379> AUTH 123.456.789
OK
192.168.1.116:6379> get k1
"v1"

 四 安装哨兵 Sentinel

  1.复制配置文件 拷贝哨兵启动文件到/usr/local/bin（3台）

 

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cd /usr/local/redis-5.0.5/
cat sentinel.conf | grep -v ^#|grep -v ^$ >/opt/redis/conf/sentinel.conf
cd src
cp redis-sentinel /usr/local/bin

 

  2.修改配置文件/opt/redis/conf/sentinel.conf（3台一致）

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port 26379
daemonize yes
pidfile /var/run/redis-sentinel.pid
logfile "/opt/redis/sentinel-log/sentinel.log"
dir /tmp
sentinel monitor mymaster 192.168.1.115 6379 2
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 180000
sentinel deny-scripts-reconfig yes
sentinel auth-pass mymaster 123.456.789

 3.启动 哨兵

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redis-sentinel  /opt/redis/conf/sentinel.conf

 4.测试

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[root@redis-node1 conf]# redis-cli  -h 192.168.1.116 -p 6379 -a 123.456.789 info Replication
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
# Replication
role:master
connected_slaves:2
slave0:ip=192.168.1.115,port=6379,state=online,offset=30335,lag=1
slave1:ip=192.168.1.114,port=6379,state=online,offset=30335,lag=1
master_replid:db7b7b2d05b7bc2e770f5597e31bf9b7274b6add
master_replid2:d8095aad044052ca59d4ecfc54a89911eb17e966
master_repl_offset:30617
second_repl_offset:11834
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1
repl_backlog_histlen:30617
 
kill 116上的redis服务 顺利切换到115上
 
 
[root@redis-node1 conf]# redis-cli  -h 192.168.1.115 -p 6379 -a 123.456.789 info Replication
Warning: Using a password with '-a' or '-u' option on the command line interface may not be safe.
# Replication
role:master
connected_slaves:1
slave0:ip=192.168.1.114,port=6379,state=online,offset=0,lag=0
master_replid:68c6b9e0b0ca4f51a887adb82ecd6e1b36a2276e
master_replid2:db7b7b2d05b7bc2e770f5597e31bf9b7274b6add
master_repl_offset:42413
second_repl_offset:41827
repl_backlog_active:1
repl_backlog_size:1048576
repl_backlog_first_byte_offset:1448
repl_backlog_histlen:40966

 



 
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posted @ 2019-11-21 17:36  caonw  阅读(807)  评论(0)  编辑  收藏  举报

posted on 2022-09-08 14:58  Colin88  阅读(54)  评论(0)    收藏  举报