Keepalived 实现 Redis AutoFailover (RedisHA)11

Note: 我注释掉了同步代码，因为生产中，在没了解实例的当前内存使用状况，服务器实际负载的状况下，贸然自动同步，会对服务器造成很大压力，对其它应用也会有很大影响，所以这一步由人工来确认，在此只作日志记录

Tip:测试环境中 ，或轻量实例的生产环境中，可以将以上注释去掉

redis_fault.sh

fault状态切换脚本，不同之处在于互指对方为master

root@redis-a scripts# cat /etc/keepalived/scripts/redis_fault.sh

#!/bin/bash

REDISCLI="/usr/local/bin/redis-cli"

LOGFILE="/data/redis/keepalived-redis-state.log"

pid=$$

echo "date +'%Y-%m-%d:%H:%M:%S'|$pid|state:fault being fault status" >> $LOGFILE

#echo "date +'%Y-%m-%d:%H:%M:%S'|$pid|state:fault ready to sync with master" >> $LOGFILE

#echo "date +'%Y-%m-%d:%H:%M:%S'|$pid|state:fault Run 'SLAVEOF redis-b 6379'" >> $LOGFILE

#$REDISCLI SLAVEOF redis-b 6379 >> $LOGFILE 2>&1

#echo "date +'%Y-%m-%d:%H:%M:%S'|$pid|state:fault wait other connect...." >> $LOGFILE

root@redis-a scripts#

root@redis-b scripts# cat /etc/keepalived/scripts/redis_fault.sh

#!/bin/bash

REDISCLI="/usr/local/bin/redis-cli"

LOGFILE="/data/redis/keepalived-redis-state.log"

pid=$$

echo "date +'%Y-%m-%d:%H:%M:%S'|$pid|state:fault being fault status" >> $LOGFILE

#echo "date +'%Y-%m-%d:%H:%M:%S'|$pid|state:fault ready to sync with master" >> $LOGFILE

#echo "date +'%Y-%m-%d:%H:%M:%S'|$pid|state:fault Run 'SLAVEOF redis-a 6379'" >> $LOGFILE

#$REDISCLI SLAVEOF redis-a 6379 >> $LOGFILE 2>&1

#echo "date +'%Y-%m-%d:%H:%M:%S'|$pid|state:fault wait other connect...." >> $LOGFILE

root@redis-b scripts#

Note: 我注释掉了同步代码，原因同上