多实例 mysql 数据库的巡检脚本

 [root@mysql-back ~]# cat mysql_check.sh 
#!/bin/bash 
TXT=system_check_$(date +%F-%H:%M).txt 
echo ' 
      memory 
             ' >> $TXT 
free -m >> $TXT 

echo ' 

      disks information 
                        ' >> $TXT 
df -h >> $TXT 

echo ' 

      mysql status 
                   ' >> $TXT 
netstat -nlp|grep mysql >> $TXT 

echo ' 

     3306 
                   ' >> $TXT 

mysql -t -S /data/mysql/mysqldata3306/sock/mysql.sock -phabby -e "SHOW VARIABLES LIKE '%connection%';select substring_index(host,':',1),time,count(*)from INFORMATION_SCHEMA.processlist
group by substring_index(host,':',1);SHOW STATUS LIKE '%connection%';" >> $TXT 

echo ' 

     3307 
                   ' >> $TXT 

mysql -t -S /data/mysql/mysqldata3307/sock/mysql.sock -phabby -e "SHOW VARIABLES LIKE '%connection%';select substring_index(host,':',1),time,count(*)from INFORMATION_SCHEMA.processlist
group by substring_index(host,':',1);SHOW STATUS LIKE '%connection%';" >> $TXT 

echo ' 

     3308 
                   ' >> $TXT 

mysql -t -S /data/mysql/mysqldata3308/sock/mysql.sock -phabby -e "SHOW VARIABLES LIKE '%connection%';select substring_index(host,':',1),time,count(*)from INFORMATION_SCHEMA.processlist
group by substring_index(host,':',1);SHOW STATUS LIKE '%connection%';" >> $TXT 

echo ' 

     3309 
                   ' >> $TXT 

mysql -t -S /data/mysql/mysqldata3309/sock/mysql.sock -phabby -e "SHOW VARIABLES LIKE '%connection%';select substring_index(host,':',1),time,count(*)from INFORMATION_SCHEMA.processlist
group by substring_index(host,':',1);SHOW STATUS LIKE '%connection%';" >> $TXT 

cat $TXT

参考：

http://my.oschina.net/u/1403438/blog/177495