基于keepalived对redis做高可用配置---转载

jssyxj

　　关于keepalived的详细介绍，请移步本人相关博客：http://wangfeng7399.blog.iyunv.com/3518031/1405785
　　

功能	ip地址	安装软件
主redis	10.13.6.13	redis，keepalived
从redis	10.13.6.16	redis，keepalived
VIP	10.13.6.17

　　一、redis主从搭建
　　1.redis安装
　　本文通过yum源的安装方式来安装（需要配置epel源），也可以通过源码编译的方式来安装  

1 2	[iyunv@P2Pp_Red01 ~]# yum install -y redis [iyunv@P2Pp_Red02 ~]# yum install -y redis

　　2.修改配置文件
　　①、主redis需要修改的文件及内容

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[iyunv@P2Pp_Red01 ~]# vi /etc/redis.conf bind 0.0.0.0 其余都可以安装默认状态

　　②、从redis需要修改的文件及内容

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[iyunv@P2Pp_Red02 ~]# vi /etc/redis.conf bind 0.0.0.0 slaveof 10.13.6.13 6379 //指定主redis的地址与端口

　　3.查看主从状态

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[iyunv@P2Pp_Red01 ~]# redis-cli INFO |grep role -A 3 role:master slave0:10.13.6.16,45270,online db0:keys=6,expires=0 [iyunv@P2Pp_Red02 ~]#  redis-cli INFO |grep role -A 3 role:slave master_host:10.13.6.13 master_port:6379 master_link_status:up

　　二、使用keepalived对redis做高可用
　　1.安装keepalived，两台机器都需要安装

1 2	[iyunv@P2Pp_Red01 ~]# yum install -y keepalived [iyunv@P2Pp_Red02 ~]# yum install -y keepalived

　　2.准备配置文件
　　①、主redis的配置文件,关于各行代表的意思，请移步我的另外一篇文档，链接见文章开头

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[iyunv@P2Pp_Red01 scripts]# vi /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs {    notification_email {      acassen@firewall.loc      failover@firewall.loc      sysadmin@firewall.loc    }    notification_email_from Alexandre.Cassen@firewall.loc    smtp_server 10.13.4.17    smtp_connect_timeout 30    router_id LVS_DEVEL } vrrp_script chk_redis {     script "killall -0 redis-server"     interval 2 } vrrp_instance VI_1 {     state MASTER     interface eth0     virtual_router_id  100     priority 100     advert_int 1     authentication {         auth_type PASS         auth_pass 1111     }     virtual_ipaddress {         10.13.6.17     } track_script {     chk_redis }         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 } ~[iyunv@P2Pp_Red01 ~]# vi /etc/keepalived/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 10.13.4.13 6379 >> $LOGFILE  2>&1 sleep 10 #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 ~ [iyunv@P2Pp_Red01 ~]# vi /etc/keepalived/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 15 #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 10.13.4.13 6379 >> $LOGFILE  2>&1 [iyunv@P2Pp_Red01 scripts]# vi /etc/keepalived/scripts/redis_stop.sh #!/bin/bash LOGFILE=/var/log/keepalived-redis-state.log echo "[stop]" >> $LOGFILE date >> $LOGFILE [iyunv@P2Pp_Red01 scripts]# vi /etc/keepalived/scripts/redis_fault.sh #!/bin/bash GFILE=/var/log/keepalived-redis-state.log echo "[fault]" >> $LOGFILE date >> $LOGFILE ~

　　②、准备从redis的配置文件

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[iyunv@P2Pp_Red02 ~]# vi /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs {    notification_email {      acassen@firewall.loc      failover@firewall.loc      sysadmin@firewall.loc    }    notification_email_from Alexandre.Cassen@firewall.loc    smtp_server 10.13.4.13    smtp_connect_timeout 30    router_id LVS_DEVEL } vrrp_script chk_redis {     script "killall -0 redis-server"     interval 1 } vrrp_instance VI_1 {     state BACKUP     interface eth0     virtual_router_id 100     priority 99     advert_int 1     authentication {         auth_type PASS         auth_pass 1111     }     virtual_ipaddress {         10.13.6.17     } #track_script { #    chk_redis #} #        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 [iyunv@P2Pp_Red02 ~]# vi /etc/keepalived/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 10.13.6.13 6379 >> $LOGFILE  2>&1 sleep 10 #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 ~ [iyunv@P2Pp_Red02 ~]# vi /etc/keepalived/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.... sleep 15 #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 10.13.6.13 6379 >> $LOGFILE  2>&1 其余的两个文件跟主redis是一样的

　　本处将不再给模拟故障，但是测试时通过的，现在已经在生产环境中使用
　　本文出自 “IT民工--小枫” 博客，请务必保留此出处http://wangfeng7399.blog.iyunv.com/3518031/1591275