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关于keepalived的详细介绍，请移步本人相关博客：http://wangfeng7399.blog.51cto.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
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[root@P2Pp_Red01 ~]# yum install -y redis[root@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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[root@P2Pp_Red01 ~]# vi /etc/redis.confbind 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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[root@P2Pp_Red02 ~]# vi /etc/redis.confbind 0.0.0.0slaveof 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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[root@P2Pp_Red01 ~]# redis-cli INFO |grep role -A 3role:masterslave0:10.13.6.16,45270,onlinedb0:keys=6,expires=0[root@P2Pp_Red02 ~]# redis-cli INFO |grep role -A 3role:slavemaster_host:10.13.6.13master_port:6379master_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
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[root@P2Pp_Red01 ~]# yum install -y keepalived[root@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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[root@P2Pp_Red01 scripts]# vi /etc/keepalived/keepalived.conf! Configuration File for keepalivedglobal_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}~[root@P2Pp_Red01 ~]# vi /etc/keepalived/scripts/redis_master.sh #!/bin/bashREDISCLI="/usr/bin/redis-cli"LOGFILE="/var/log/keepalived-redis-state.log"echo "[master]" >> $LOGFILEdate >> $LOGFILEecho "Being master...." >> $LOGFILE 2>&1echo "Run SLAVEOF cmd ..." >> $LOGFILE$REDISCLI SLAVEOF 10.13.4.13 6379 >> $LOGFILE 2>&1sleep 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~[root@P2Pp_Red01 ~]# vi /etc/keepalived/scripts/redis_backup.sh #!/bin/bashREDISCLI="/usr/bin/redis-cli"LOGFILE="/var/log/keepalived-redis-state.log"echo "[backup]" >> $LOGFILEdate >> $LOGFILEecho "Being slave...." >> $LOGFILE 2>&1sleep 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[root@P2Pp_Red01 scripts]# vi /etc/keepalived/scripts/redis_stop.sh #!/bin/bashLOGFILE=/var/log/keepalived-redis-state.logecho "[stop]" >> $LOGFILEdate >> $LOGFILE[root@P2Pp_Red01 scripts]# vi /etc/keepalived/scripts/redis_fault.sh #!/bin/bashGFILE=/var/log/keepalived-redis-state.logecho "[fault]" >> $LOGFILEdate >> $LOGFILE~ |
②、准备从redis的配置文件
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[root@P2Pp_Red02 ~]# vi /etc/keepalived/keepalived.conf! Configuration File for keepalivedglobal_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[root@P2Pp_Red02 ~]# vi /etc/keepalived/scripts/redis_master.sh #!/bin/bashREDISCLI="/usr/bin/redis-cli"LOGFILE="/var/log/keepalived-redis-state.log"echo "[master]" >> $LOGFILEdate >> $LOGFILEecho "Being master...." >> $LOGFILE 2>&1echo "Run SLAVEOF cmd ..." >> $LOGFILE$REDISCLI SLAVEOF 10.13.6.13 6379 >> $LOGFILE 2>&1sleep 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~[root@P2Pp_Red02 ~]# vi /etc/keepalived/scripts/redis_backup.sh #!/bin/bashREDISCLI="/usr/bin/redis-cli"LOGFILE="/var/log/keepalived-redis-state.log"echo "[backup]" >> $LOGFILEdate >> $LOGFILEecho "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.51cto.com/3518031/1591275
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原文地址：http://www.cnblogs.com/davidwang456/p/4180378.html
