標簽：監控MySQL主從同步狀態是否異常
階段1：開發一個守護進程腳本每30秒實現檢測一次。
階段2：如果同步出現如下錯誤號(1158,1159,1008,1007,1062)，請跳過錯誤
階段3：請使用數組技術實現上述腳本（獲取主從判斷及錯誤號部分）
[root@slave ~]# mysql -u root -proot -e "show slave statusG;"
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.16.1.2 #當前的mysql master服務器主機
Master_User: myslave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000003
Read_Master_Log_Pos: 471
Relay_Log_File: relay-log-bin.000002
Relay_Log_Pos: 252
Relay_Master_Log_File: master-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Master_SSL_Key:
Seconds_Behind_Master: 0 #和主庫比同步延遲的秒數
準備：
egrep "_Running|Behind_Master" slave.log #過濾
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Seconds_Behind_Master: 0
[root@slave ~]# egrep "_Running|Behind_Master" slave.log | awk ‘{print $NF}‘
Yes
Yes
0
階段一：開發一個守護進程腳本每30秒實現檢測一次。
#!/bin/bash
while true
do
array=($(egrep "_Running|Behind_Master" slave.log|awk ‘{print $NF}‘))
if [ "${array[0]}" == "Yes" -a "${array[1]}" == "Yes" -a "${array[2]}" == "0" ]
then
echo "MySQL is slave is ok"
else
char="MySQL slave is not ok"
echo "$char"
echo "$char"|mail -s "$char" 995345781@qq.com
break
fi
sleep 30
done
執行結果：
[root@slave ~]# sh test.sh
MySQL is slave is ok
MySQL is slave is ok
終極版：
#!/bin/bash
#Date:2017-7-3
#Author:xcn(baishuchao@yeah.net)
#version 1.0
mysql_cmd="mysql -u root -proot"
errorno=(1158 1159 1008 1007 1062)
while true
do
array=($($mysql_cmd -e "show slave statusG"|egrep ‘_Running|Behind_Master|Last_SQL_Errno‘|awk ‘{print $NF}‘))
if [ "${array[0]}" == "Yes" -a "${array[1]}" == "Yes" -a "${array[2]}" == "0" ]
then
echo "MySQL is slave is ok"
else
for ((i=0;i<${#errorno[*]};i++))
do
if [ "${array[3]}" = "${errorno[$i]}" ];then
$mysql_cmd -e "stop slave &&set global sql_slave_skip_counter=1;start slave;"
fi
done
char="MySQL slave is not ok"
echo "$char"
echo "$char"|mail -s "$char" 995345781@qq.com
break
fi
sleep 30
done
提示：這個腳本可以用于生產環境中，監控mysql主從同步狀態是否異常，根據
‘_Running|Behind_Master|Last_SQL_Errno‘
這個進行判斷，如果不正常的話則會進一步判斷狀態碼，然后進行輸出，則會發郵件或短信給運維人員
