zabbix 数据库优化（快速通过zabbix获取数据库连接的信息及部分扩展）

vim /etc/zabbix/zabbix_agentd.conf
    
    EnableRemoteCommands=1  #增加这项参数，意思是允许zabbix server远程命令
    
service zabbix-agent restart

#!/bin/sh

    export PATH=$PATH:/usr/bin
    da=`date +%Y%m%d`
    dc=`date +%Y-%m-%d" "%H:%M:%S`
    
    echo $dc"-------------------------------我是分割线------------------------------------" >> /tmp/ok_$da.log
    
    /usr/local/mysql/bin/mysql -uroot -pXXX -e "select * from information_schema.PROCESSLIST where COMMAND != 'Sleep' order by TIME DESC;" >> /tmp/ok_$da.log

#!/bin/sh
export PATH=$PATH:/usr/bin
da=`date +%Y%m%d`
dc=`date +%Y-%m-%d" "%H:%M:%S`
echo $dc"-------------------------------我是分割线------------------------------------" >> /home/zabbix/engine_log/engine_log_$da.log
/usr/bin/mysql -hlocalhost -uroot -pXXX -e "show engine innodb status \G;" >> /home/zabbix/engine_log/engine_log_$da.log
echo -e "\n\n\n" >> /home/zabbix/engine_log/engine_log_$da.log
echo $dc"-------------------------------我是分割线------------------------------------" >> /home/zabbix/processlist/processlist_$da.log
/usr/bin/mysql -hlocalhost -uroot -pXXX -e "select * from information_schema.processlist where time>=0 and command !='sleep' order by time desc \G;" >> /home/zabbix/processlist/processlist_$da.log
echo -e "\n\n\n" >> /home/zabbix/processlist/processlist_$da.log
echo $dc"-------------------------------我是分割线------------------------------------" >> /home/zabbix/lock/lock_$da.log
/usr/bin/mysql -hlocalhost -uroot -pXXX -e "select 'Blocker' role, p.id, p.user, left(p.host, locate(':', p.host) - 1) host, tx.trx_id, tx.trx_state, tx.trx_started, timestampdiff(second, tx.trx_started, now()) duration, lo.lock_mode, lo.lock_type, lo.lock_table, lo.lock_index, tx.trx_query, tx.trx_tables_in_use, tx.trx_tables_locked, tx.trx_rows_locked from information_schema.innodb_trx tx, information_schema.innodb_lock_waits lw, information_schema.innodb_locks lo, information_schema.processlist p where lw.blocking_trx_id = tx.trx_id and p.id = tx.trx_mysql_thread_id and lo.lock_trx_id = tx.trx_id union all select 'Blockee' role, p.id, p.user, left(p.host, locate(':', p.host) - 1) host, tx.trx_id, tx.trx_state, tx.trx_started, timestampdiff(second, tx.trx_started, now()) duration, lo.lock_mode, lo.lock_type, lo.lock_table, lo.lock_index, tx.trx_query, tx.trx_tables_in_use, tx.trx_tables_locked, tx.trx_rows_locked from information_schema.innodb_trx tx, information_schema.innodb_lock_waits lw, information_schema.innodb_locks lo, information_schema.processlist p where lw.requesting_trx_id = tx.trx_id and p.id = tx.trx_mysql_thread_id and lo.lock_trx_id = tx.trx_id \G;" >> /home/zabbix/lock/lock_$da.log
echo -e "\n\n\n" >> /home/zabbix/lock/lock_$da.log
val=`/usr/bin/mysql -hlocalhost -uroot -pXXX -N -e "show variables like 'general_log'" |awk '{print $2}'`
if [ $val = 'OFF' ];
then
        /usr/bin/mysql -hlocalhost -uroot -pXXX -e "set global general_log=0;"
else
        exit 0;
fi

#!/bin/sh
export PATH=$PATH:/usr/bin
da=`date +%Y%m%d`
dc=`date +%Y-%m-%d" "%H:%M:%S`
user="root"
password="XXX"
val=`mysql -u$user -p$password -N -e "select count(*) from information_schema.processlist where time>=180 and command ='Query' and user in ('job_name','report')" | awk '{print $1}'`
if [ $val -gt 0 ];
then
        echo $dc"-------------------------------我是分割线------------------------------------" >> /home/zabbix/kill_log/long_query_$da.log
        mysql -u$user -p$password -e "select * from information_schema.processlist where time>=180 and command ='Query' and user in ('job_name','report') order by time desc \G;" >> /home/zabbix/kill_log/long_query_$da.log
        echo -e "\n\n\n" >> /home/zabbix/kill_log/long_query_$da.log
        count=`mysql -u$user -p$password -N -e "select id from information_schema.processlist where time>=180 and command ='Query' and user in ('job_name','report')"`
        for id in $count;
        do
           mysql -u$user -p$password -e "kill $id"
        done
else
        exit 0;
fi

#!/bin/sh
logdir='/mysql/logs'
binlog='/mysql/binlog'
var_percent=`df -h |grep var|grep dev/sda|awk '{print $5}'|awk -F% '{print $1}'`
if [ -z $var_percent ] || [ $var_percent -lt 90 ];then
        echo "never mind"
        exit 0
fi
date >>$binlog/del_list.txt
list=`ls -l --time-style='+%Y-%m-%d %H:%M:%S' $binlog/mysql-bin.0?????|awk '{print $6","$7","$8}'`
for i in $list
do
        filetime=`echo $i|awk -F "," '{print $1,$2}'`
        filetimestamp=`date -d "$filetime" +%s`
        cur_time=`date +%s`
        if [ $(($cur_time - $filetimestamp)) -gt $((3*24*3600)) ];then
                filename=`echo $i|awk -F, '{print $3}'`
                echo "$filename will delete">>$binlog/del_list.txt
                /bin/rm $filename
        fi
done
if [ -f $logdir/mysql-slow.log ];then
        slow_log_size=`stat $logdir/mysql-slow.log|grep 'Size:'|awk -F ':' '{print $2}'|awk '{print $1}'`
        if [ $slow_log_size -gt $((2*1024*1024*1024)) ];then
                echo "$logdir/mysql-slow.log">>$logdir/del_list.txt
                /bin/rm $logdir/mysql-slow.log
        fi
fi