redis主从实现10秒检查与恢复
#!/bin/bashDATE=`date +%Y%m%d%M%s`
REDIS_DIR=/usr/local/redis
REDIS2_DIR=/usr/local/redis2
BIN_DIR=/usr/local/redis/bin
DATA1_DIR=/usr/local/redis/data
DATA2_DIR=/usr/local/redis2/data
PORT1=6378
PORT2=6379
function BACKUP_RDB {
ps -ef |grep $PORT2 >/dev/null
if[ $? -eq 0 ];then
${BIN_DIR}/redis-cli -p $PORT2 bgsave >/dev/null
if [ $? -eq 0 ];then
echo -e "\033[31m MASTER REDIS DOWN AND SLAVE bgsave DONE\033[0m"
${BIN_DIR}/redis-cli -p $PORT2 SLAVEOF NO ONE >/dev/null
fi
fi
}
function CP_RDB {
[ -d ${DATA1_DIR}/redisbackup ]|| mkdir ${DATA1_DIR}/redisbackup
if [ -f $DATA2_DIR/dump.rdb ];then
mv ${DATA1_DIR}/dump.rdb${DATA1_DIR}/redisbackup/dump.rdb.$DATE
cp ${DATA2_DIR}/dump.rdb${DATA1_DIR}/
fi
}
functionSTART_REDIS {
KEY2_NUM=`${BIN_DIR}/redis-cli -p $PORT2 INFO|grep db*.key |awk -F[:=,] '{total+=$3}END{print total}'`
${BIN_DIR}/redis-server ${REDIS_DIR}/etc/redis.conf
netstat -tnlp |grep "$PORT1" >/dev/null
a=$?
if [ $a -ne 0 ];then
while [ $a -ne 0 ];do
sleep 2
netstat -tnlp | grep "127.0.0.1:$PORT1" 1>/dev/null 2>/dev/null
a=$?
done
echo -e "\033[32m MASTER REDIS RUNNING ........\033[0m"
sleep 7
KEY1_NUM=`${BIN_DIR}/redis-cli -p $PORT1INFO|grep db*.key |awk -F[:=,] '{total+=$3}END{print
total}'`
# echo ${KEY1_NUM}
if [ $KEY1_NUM -ge $KEY2_NUM ];then
${BIN_DIR}/redis-cli -p $PORT2 SLAVEOF 127.0.0.1 $PORT1 >/dev/null
echo -e "\033[32m MASTER AND SLAVE are Normal sync \033[0m"
else
echo -e "\033[31m KEY NUM are not equal, MASTER AND SLAVE are not Normal sync,place to check ! \033[0m"
break
fi
else
echo -e "\033[32m MASTER REDIS RUNNING ........\033[0m"
sleep 7
KEY1_NUM=`${BIN_DIR}/redis-cli -p $PORT1 INFO|grep db*.key |awk -F[:=,] '{total+=$3}END{print total}'`
# echo ${KEY1_NUM}
if [ $KEY1_NUM -ge $KEY2_NUM ];then
${BIN_DIR}/redis-cli -p $PORT2 SLAVEOF 127.0.0.1 $PORT1 >/dev/null
echo -e "\033[32m MASTER AND SLAVE are Normal sync \033[0m"
else
echo -e "\033[31m KEY NUM are not equal, MASTER AND SLAVE are not Normal sync,place to check ! \033[0m"
break
fi
fi
}
while true;do
sleep 10
netstat -tnlp | grep "127.0.0.1:$PORT1" 1>/dev/null 2>/dev/null
TRAP1=$?
ps -ef |grep "$PORT1" >/dev/null
TRAP2=$?
if [ $TRAP1 -ne0 ] || [ $TRAP2 -ne0 ];then
#echo redis-master down
BACKUP_RDB
CP_RDB
START_REDIS
fi
done
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