redis-keepalived High Availability

1, version. are yum installed.

[Email protected] ~]# Redis-server--version
Redis Server version 2.4.10 (00000000:0)
[Email protected] ~]# REDIS-CLI--version
REDIS-CLI 2.4.10
[Email protected] ~]# keepalived--version
Keepalived v1.2.13 (03/19,2015)
2, configuration file content considerations.

A, to achieve Redis master-slave replication, add a line from the node configuration file slaveof 172.16.226.129 (Master node IP) 6379 (primary node port).

B,keepalived Configuration file Contents:

Vrrp_script Chk_redis {
Script "/etc/keepalived/scripts/redis_check.sh" # # #监控脚本
Interval 2 # # #监控时间
}
Vrrp_instance Vi_1 {
State MASTER # # #设置为MASTER
Interface Eth0 # # #监控网卡
VIRTUAL_ROUTER_ID 51
Priority 101 # # #权重值
Authentication {
Auth_type PASS # # #加密
Auth_pass Redis # # #密码
}
Track_script {
Chk_redis # # #执行上面定义的chk_redis
}
virtual_ipaddress {
172.16.226.108 # # #VIP
}
notify_master/etc/keepalived/scripts/redis_master.sh
notify_backup/etc/keepalived/scripts/redis_backup.sh
notify_fault/etc/keepalived/scripts/redis_fault.sh
notify_stop/etc/keepalived/scripts/redis_stop.sh
}
From a node you only need to set the weight value to a smaller point.

3, the implementation of Redis master-Slave conversion script:

[email protected] keepalived]# cat scripts/redis_master.sh
#!/bin/bash
Rediscli= "/usr/bin/redis-cli"
Logfile= "/var/log/keepalived-redis-state.log"
echo "[Master]" >> $LOGFILE
Date >> $LOGFILE
echo "Being master ..." >> $LOGFILE 2>&1
echo "Run slaveof cmd ..." >> $LOGFILE
$REDISCLI slaveof 192.168.241.35 6379 >> $LOGFILE 2>&1
Sleep #延迟10秒以后待数据同步完成后再取消同步状态
echo "Run slaveof NO one cmd ..." >> $LOGFILE
$REDISCLI slaveof NO one >> $LOGFILE 2>&1

[email protected] keepalived]# cat scripts/redis_check.sh
#!/bin/bash
Alive= '/usr/bin/redis-cli PING '
If ["$ALIVE" = = "PONG"]; Then
Echo $ALIVE
Exit 0
Else
Echo $ALIVE
Exit 1
Fi

[email protected] keepalived]# cat scripts/redis_backup.sh
#!/bin/bash
Rediscli= "/usr/bin/redis-cli"
Logfile= "/var/log/keepalived-redis-state.log"
echo "[Backup]" >> $LOGFILE
Date >> $LOGFILE
echo "Being slave ..." >> $LOGFILE 2>&1
Sleep #延迟15秒待数据被对方同步完成之后再切换主从角色
echo "Run slaveof cmd ..." >> $LOGFILE
$REDISCLI slaveof 192.168.241.35 (IP of another node) 6379 >> $LOGFILE 2>&1

[email protected] keepalived]# cat scripts/redis_fault.sh
#!/bin/bash
Logfile=/var/log/keepalived-redis-state.log
echo "[Fault]" >> $LOGFILE
Date >> $LOGFILE

[email protected] keepalived]# cat scripts/redis_stop.sh
#!/bin/bash
Logfile=/var/log/keepalived-redis-state.log
echo "[Stop]" >> $LOGFILE
Date >> $LOGFILE

Give the script permission to execute.

Test: Slightly

Remote link redis:redis-cli-h 172.16.226.108 (server IP)-p 6379 (service port)

This article is from the Linux notes blog, so be sure to keep this source http://lsfeng.blog.51cto.com/7959286/1718331

redis-keepalived High Availability