基于keepalived对redis做高可用配置---转载 - keepalived - 运维网

jssyxj 发表于 2015-9-4 09:53:02

基于keepalived对redis做高可用配置---运维网

　　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redis10.13.6.13redis，keepalived从redis10.13.6.16redis，keepalivedVIP10.13.6.17 　　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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# yum install -y redis
# 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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# 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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# 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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# redis-cli INFO |grep role -A 3
role:master
slave0:10.13.6.16,45270,online
db0:keys=6,expires=0
#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

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# yum install -y keepalived
# 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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# 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_id100
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

}
~# vi /etc/keepalived/scripts/redis_master.sh

#!/bin/bash
REDISCLI="/usr/bin/redis-cli"
LOGFILE="/var/log/keepalived-redis-state.log"

echo "" >> $LOGFILE
date >> $LOGFILE
echo "Being master...." >> $LOGFILE 2>&1

echo "Run SLAVEOF cmd ..." >> $LOGFILE
$REDISCLI SLAVEOF 10.13.4.13 6379 >> $LOGFILE2>&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
~
# vi /etc/keepalived/scripts/redis_backup.sh

#!/bin/bash
REDISCLI="/usr/bin/redis-cli"
LOGFILE="/var/log/keepalived-redis-state.log"

echo "" >> $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 >> $LOGFILE2>&1
# vi /etc/keepalived/scripts/redis_stop.sh

#!/bin/bash

LOGFILE=/var/log/keepalived-redis-state.log

echo "" >> $LOGFILE
date >> $LOGFILE
# vi /etc/keepalived/scripts/redis_fault.sh

#!/bin/bash
GFILE=/var/log/keepalived-redis-state.log

echo "" >> $LOGFILE
date >> $LOGFILE

~　　②、准备从redis的配置文件

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# 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

# vi /etc/keepalived/scripts/redis_master.sh

#!/bin/bash
REDISCLI="/usr/bin/redis-cli"
LOGFILE="/var/log/keepalived-redis-state.log"

echo "" >> $LOGFILE
date >> $LOGFILE
echo "Being master...." >> $LOGFILE 2>&1

echo "Run SLAVEOF cmd ..." >> $LOGFILE
$REDISCLI SLAVEOF 10.13.6.13 6379 >> $LOGFILE2>&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
~
# vi /etc/keepalived/scripts/redis_backup.sh

#!/bin/bash
REDISCLI="/usr/bin/redis-cli"
LOGFILE="/var/log/keepalived-redis-state.log"

echo "" >> $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 >> $LOGFILE2>&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
　　

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