vrrp_instance VI_1 {
state BACKUP
interface eno16777984
virtual_router_id 51
priority 99
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_redis
}
virtual_ipaddress {
172.16.81.139
}
notify_master /etc/keepalived/script/redis_master.sh
notify_backup /etc/keepalived/script/redis_backup.sh
notify_fault /etc/keepalived/script/redis_fault.sh
notify_stop /etc/keepalived/script/redis_stop.sh
}
2、配置脚本
Master KeepAlived -- 140
创建存放脚本目录：mkdir -p /etc/keepalived/script/
cd /etc/keepalived/script/
[root@localhost script]# cat redis_check.sh
#!/bin/bash
ALIVE=`/usr/local/redis/bin/redis-cli -a 123456 PING`
if [ "$ALIVE" == "PONG" ];then
echo $ALIVE
exit 0
else
echo $ALIVE
exit 1
fi
[root@localhost script]# cat redis_master.sh
#!/bin/bash
REDISCLI="/usr/local/redis/bin/redis-cli -a 123456"
LOGFILE="/var/log/keepalived-redis-state.log"
sleep 15
echo "[master]" >> $LOGFILE
date >> $LOGFILE
echo "Being master...." >>$LOGFILE 2>&1
echo "Run SLAVEOF cmd ...">> $LOGFILE
$REDISCLI SLAVEOF 172.16.81.141 6379 >>$LOGFILE 2>&1
if [ $? -ne 0 ];then
echo "data rsync fail." >>$LOGFILE 2>&1
else
echo "data rsync OK." >> $LOGFILE 2>&1
fi
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
if [ $? -ne 0 ];then
echo "Run SLAVEOF NO ONE cmd fail." >>$LOGFILE 2>&1
else
echo "Run SLAVEOF NO ONE cmd OK." >> $LOGFILE 2>&1
fi
[root@localhost script]# cat redis_backup.sh
#!/bin/bash
REDISCLI="/usr/local/redis/bin/redis-cli -a 123456"
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
$REDISCLI SLAVEOF 172.16.81.141 6379 >>$LOGFILE 2>&1
[root@localhost script]# cat redis_fault.sh
#!/bin/bash
LOGFILE=/var/log/keepalived-redis-state.log
echo "[fault]" >> $LOGFILE
date >> $LOGFILE
[root@localhost script]# cat redis_stop.sh
#!/bin/bash
LOGFILE=/var/log/keepalived-redis-state.log
echo "[stop]" >> $LOGFILE
date >> $LOGFILE
Slave KeepAlived -- 141
创建存放脚本目录：mkdir -p /etc/keepalived/script/
cd /etc/keepalived/script/
[root@localhost script]# cat redis_check.sh
#!/bin/bash
ALIVE=`/usr/local/redis/bin/redis-cli -a 123456 PING`
if [ "$ALIVE" == "PONG" ]; then
echo $ALIVE
exit 0
else
echo $ALIVE
exit 1
fi
[root@localhost script]# cat redis_master.sh
#!/bin/bash
REDISCLI="/usr/local/redis/bin/redis-cli -a 123456"
LOGFILE="/var/log/keepalived-redis-state.log"
echo "[master]" >> $LOGFILE
date >> $LOGFILE
echo "Being master...." >>$LOGFILE 2>&1
echo "Run SLAVEOF cmd ...">> $LOGFILE
$REDISCLI SLAVEOF 172.16.81.140 6379 >>$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
[root@localhost script]# cat redis_backup.sh
#!/bin/bash
REDISCLI="/usr/local/redis/bin/redis-cli -a 123456"
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
$REDISCLI SLAVEOF 172.16.81.140 6379 >>$LOGFILE 2>&1
[root@localhost script]# cat redis_fault.sh
#!/bin/bash
LOGFILE=/var/log/keepalived-redis-state.log
echo "[fault]" >> $LOGFILE
date >> $LOGFILE
[root@localhost script]# cat redis_stop.sh
#!/bin/bash
LOGFILE=/var/log/keepalived-redis-state.log
echo "[stop]" >> $LOGFILE
date >> $LOGFILE
3、启动服务
systemctl start keepalived
systemctl enable keepalived
4、测试服务是否正常
ps -ef | grep keepalived
ping 172.16.81.139
查看VIP地址
测试连接redis是否正常
redis-cli -h 172.16.81.139 -p 6379 -a 123456
Keepalived测试完成！！