我的redis+keepalived主从自动切换配置脚本

echo "192.168.0.246 redismaster" >> /etc/hosts

echo "192.168.0.249 redisslave" >> /etc/hosts

echo 1 > /proc/sys/vm/overcommit_memory

echo 511 > /proc/sys/net/core/somaxconn

echo never > /sys/kernel/mm/transparent_hugepage/enabled

$ wget http://download.redis.io/releases/redis-3.2.0.tar.gz
$ tar xzf redis-3.2.0.tar.gz

$ cd redis-3.2.0

$ make

cp redis-server redis-cli redis-benchmark redis-check-aof redis-check-rdb /usr/local/bin

cp redis.conf /etc/

修改 /etc/redis.conf里面可以把 daemonize no 修改为daemonize yes

vi /etc/init.d/redis-server

==========================服务脚本

vi /etc/init.d/redis-server

#!/usr/bin/env bash

#

# redis start up the redis server daemon

#

# chkconfig: 345 99 99

# description: redis service in /etc/init.d/redis \

# chkconfig --add redis or chkconfig --list redis \

# service redis start or service redis stop

# processname: redis-server

# config: /etc/redis.conf

PATH=/usr/local/bin:/sbin:/usr/bin:/bin

REDISPORT=6379

EXEC=/usr/local/bin/redis-server

REDIS_CLI=/usr/local/bin/redis-cli

PIDFILE=/var/run/redis.pid

CONF="/etc/redis.conf"

#make sure some dir exist

if [ ! -d /var/lib/redis ] ;then

mkdir -p /var/lib/redis

mkdir -p /var/log/redis

fi

case "$1" in

status)

ps -A|grep redis

;;

start)

if [ -f $PIDFILE ]

then

echo "$PIDFILE exists, process is already running or crashed"

else

echo "Starting Redis server..."

$EXEC $CONF

fi

if [ "$?"="0" ]

then

echo "Redis is running..."

fi

;;

stop)

if [ ! -f $PIDFILE ]

then

echo "$PIDFILE does not exist, process is not running"

else

PID=$(cat $PIDFILE)

echo "Stopping ..."

$REDIS_CLI -p $REDISPORT SHUTDOWN

while [ -x ${PIDFILE} ]

do

echo "Waiting for Redis to shutdown ..."

sleep 1

done

echo "Redis stopped"

fi

;;

restart|force-reload)

${0} stop

${0} start

;;

*)

echo "Usage: /etc/init.d/redis {start|stop|restart|force-reload}" >&2

exit 1

esac

=======================================================@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

chmod +x /etc/init.d/redis-server

chkconfig --add redis-server

service redis-server restart

从机配置=========================================

从服务器，配置一样，只不过 修改/etc/redis.conf 中

slaveof <masterip> <masterport>修改为

slaveof 192.168.0.246 6379

===========================================================================================

分别keepalived =====================================master

! Configuration File for keepalived

vrrp_script chk_redis {

script "/etc/keepalived/scripts/redis_check.sh"

interval 2

}

vrrp_instance VI_1 {

state MASTER

interface eth0

virtual_router_id 51

mcast_src_ip 192.168.0.246

priority 100

advert_int 1

authentication {

auth_type PASS

auth_pass 1111

}

track_script {

chk_redis

}

virtual_ipaddress {

192.168.0.239

}

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/keepalived.conf ===========================slave

! Configuration File for keepalived

vrrp_script chk_redis {

script "/etc/keepalived/scripts/redis_check.sh"

interval 2

}

vrrp_instance VI_1 {

state BACKUP

interface eth0

virtual_router_id 51

mcast_src_ip 192.168.0.249

priority 10

advert_int 1

authentication {

auth_type PASS

auth_pass 1111

}

track_script {

chk_redis

}

virtual_ipaddress {

192.168.0.239

}

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

}

在Master和Slave上创建监控Redis的脚本

mkdir /etc/keepalived/scripts

vi /etc/keepalived/scripts/redis_check.sh

#!/bin/bash

ALIVE=`/usr/local/bin/redis-cli PING`

if [ "$ALIVE" == "PONG" ]; then

echo $ALIVE

exit 0

else

echo $ALIVE

exit 1

fi

===============Master上编写========================================

vi /etc/keepalived/scripts/redis_master.sh

#!/bin/bash

REDISCLI="/usr/local/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 192.168.0.249 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

vi /etc/keepalived/scripts/redis_backup.sh

#!/bin/bash

REDISCLI="/usr/local/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 192.168.0.249 6379 >> $LOGFILE 2>&1

=============================slave===============@@@@@@@@@@@@@@@@@@@

vi /etc/keepalived/scripts/redis_master.sh

#!/bin/bash

REDISCLI="/usr/local/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 192.168.0.246 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 ..." >
b9aa
;> $LOGFILE

$REDISCLI SLAVEOF NO ONE >> $LOGFILE 2>&1

vi /etc/keepalived/scripts/redis_backup.sh

#!/bin/bash

REDISCLI="/usr/local/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 192.168.0.246 6379 >> $LOGFILE 2>&1

然后在Master与Slave创建如下相同的脚本：===============

vi /etc/keepalived/scripts/redis_fault.sh

#!/bin/bash

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

echo "[fault]" >> $LOGFILE

date >> $LOGFILE

vi /etc/keepalived/scripts/redis_stop.sh

#!/bin/bash

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

echo "[stop]" >> $LOGFILE

date >> $LOGFILE