使用zabbix全方位监控MySQL

上一篇文章 使用zabbix自带MySQL监控模板监控MySQL 对MySQL的监控不够详细。本文继续探讨对MySQL的详细监控，包括MySQL实例，MySQL主从复制和MySQL存储引擎等。 本文使用的MySQL版本是5.5 本文使用的模板主要通过FROMDUAL提供的模板更改而成，FROMDUAL官方使

上一篇文章 使用zabbix自带MySQL监控模板监控MySQL

对MySQL的监控不够详细。本文继续探讨对MySQL的详细监控，包括MySQL实例，MySQL主从复制和MySQL存储引擎等。

本文使用的MySQL版本是5.5

本文使用的模板主要通过FROMDUAL提供的模板更改而成，FROMDUAL官方使用Perl语言编写采集脚本然后通过zabbix trapper的方式推送数据到zabbix server。我觉得FROMDUAL官方提供的配置方式繁琐，并且我对Perl语言又不熟悉，于是阅读官方的Perl脚本后，生出想要重新用Shell语言来实现的想法。模板中的item名称有变更，其他的大体和FROMDUAL官方的模板相同。

1.监控原理

show global status;       查看全局状态

show global variables;    查看全局变量设置

mysqladmin                MySQL管理工具

show master status;       查看Master状态

show slave status;        查看Slave状态

show binary logs;         查看二进制日志文件

show engine innodb status\G    查看InnoDB存储引擎状态

show engine myisam status\G    查看MyISAM存储引擎状态

还有通过查看information_schema 这个数据库获取InnoDB存储引擎相关信息

2.添加MySQL监控账号

GRANT USAGE,PROCESS,SUPER,REPLICATION CLIENT,REPLICATION SLAVE ON *.* TO 'zabbixagent'@'localhost' IDENTIFIED BY 'zabbixagent';

flush privileges;

在/usr/local/zabbix/etc/目录下创建一个 .my.cnf 文件

[mysql]
user=zabbixagent
password=zabbixagent
[mysqladmin]
user=zabbixagent
password=zabbixagent

3.添加zabbix子配置文件mysql_status.conf

### MySQL DB Infomation
UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|awk '{print $$2}'
UserParameter=mysql.variables[*],echo "show global variables where Variable_name='$1';"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|awk '{print $$2}'
UserParameter=mysql.ping,mysqladmin --defaults-file=/usr/local/zabbix/etc/.my.cnf ping|grep -c  alive
UserParameter=mysql.version,echo "select version();"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N

#### MySQL Master Information
UserParameter=mysql.master.Slave_count,echo "show slave hosts;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|wc -l
UserParameter=mysql.master.Binlog_file,echo "show master status;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|awk '{print $1}'|awk -F. '{print $1}'
UserParameter=mysql.master.Binlog_number,echo "show master status;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|awk '{print $1}'|awk -F. '{print $2}'
UserParameter=mysql.master.Binlog_position,echo "show master status;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|awk '{print $2}'
UserParameter=mysql.master.Binlog_count,echo "show binary logs;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|wc -l
UserParameter=mysql.master.Binlog_total_size,echo "show binary logs;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|awk '{sum+=$NF}END{print  sum}'

#### MySQL Slave Information
UserParameter=mysql.slave.Seconds_Behind_Master,echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf|grep "Seconds_Behind_Master"|awk '{print $2}'
UserParameter=mysql.slave.Slave_IO_Running,echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf|grep "Slave_IO_Running"|awk '{print $2}'
UserParameter=mysql.slave.Slave_SQL_Running,echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf|grep "Slave_SQL_Running"|awk '{print $2}'
UserParameter=mysql.slave.Relay_Log_Pos,echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf|grep "Relay_Log_Pos"|awk '{print $2}'
UserParameter=mysql.slave.Exec_Master_Log_Pos,echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf|grep "Exec_Master_Log_Pos"|awk '{print $2}'
UserParameter=mysql.slave.Read_Master_Log_Pos,echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf|grep "Read_Master_Log_Pos"|awk '{print $2}'



#### MySQL InnoDB Information
#
UserParameter=mysql.innodb[*],/usr/local/zabbix/bin/mysql_innodb_status.sh $1


####MySQL MyISAM Information
#

InnoDB相关的部分监控项目需要单独用脚本获取

mysql_innodb_status.sh

#!/bin/bash

#Get InnoDB Row Lock Details and InnoDB Transcation Lock Memory
#mysql> SELECT SUM(trx_rows_locked) AS rows_locked, SUM(trx_rows_modified) AS rows_modified, SUM(trx_lock_memory_bytes) AS lock_memory FROM information_schema.INNODB_TRX;
#+-------------+---------------+-------------+
#| rows_locked | rows_modified | lock_memory |
#+-------------+---------------+-------------+
#|        NULL |          NULL |        NULL |
#+-------------+---------------+-------------+
#1 row in set (0.00 sec)

#+-------------+---------------+-------------+
#| rows_locked | rows_modified | lock_memory |
#+-------------+---------------+-------------+
#|           0 |             0 |         376 |
#+-------------+---------------+-------------+

#Get InnoDB Compression Time
#mysql> SELECT SUM(compress_time) AS compress_time, SUM(uncompress_time) AS uncompress_time FROM information_schema.INNODB_CMP;
#+---------------+-----------------+
#| compress_time | uncompress_time |
#+---------------+-----------------+
#|             0 |               0 |
#+---------------+-----------------+
#1 row in set (0.00 sec)


#Get InnoDB Transaction states

#TRX_STATE	Transaction execution state. One of RUNNING, LOCK WAIT, ROLLING BACK or COMMITTING.

#mysql> SELECT LOWER(REPLACE(trx_state, " ", "_")) AS state, count(*) AS cnt from information_schema.INNODB_TRX GROUP BY state;
#+---------+-----+
#| state   | cnt |
#+---------+-----+
#| running |   1 |
#+---------+-----+
#1 row in set (0.00 sec)





innodb_metric=$1

case $innodb_metric in
   Innodb_rows_locked)
                      value=$(echo "SELECT SUM(trx_rows_locked) AS rows_locked, SUM(trx_rows_modified) AS rows_modified, SUM(trx_lock_memory_bytes) AS lock_memory FROM information_schema.INNODB_TRX;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N| awk '{print $1}')
                      if [ "$value" == "NULL" ];then
                         echo 0
                      else
                         echo $value
                      fi
                    ;;
   Innodb_rows_modified)
                      value=$(echo "SELECT SUM(trx_rows_locked) AS rows_locked, SUM(trx_rows_modified) AS rows_modified, SUM(trx_lock_memory_bytes) AS lock_memory FROM information_schema.INNODB_TRX;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N| awk '{print $2}')
                      if [ "$value" == "NULL" ];then
                         echo 0
                      else
                         echo $value
                      fi
                    ;;
   Innodb_trx_lock_memory)
                      value=$(echo "SELECT SUM(trx_rows_locked) AS rows_locked, SUM(trx_rows_modified) AS rows_modified, SUM(trx_lock_memory_bytes) AS lock_memory FROM information_schema.INNODB_TRX;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N| awk '{print $3}')
                      if [ "$value" == "NULL" ];then
                         echo 0
                      else
                         echo $value
                      fi
                    ;;
      Innodb_compress_time)
                      value=$(echo "SELECT SUM(compress_time) AS compress_time, SUM(uncompress_time) AS uncompress_time FROM information_schema.INNODB_CMP;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|awk '{print $1}')
                      echo $value
                      ;;
       
     Innodb_uncompress_time)
                      value=$(echo "SELECT SUM(compress_time) AS compress_time, SUM(uncompress_time) AS uncompress_time FROM information_schema.INNODB_CMP;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|awk '{print $2}')
                      echo $value
                      ;;   
         Innodb_trx_running)
                         value=$(echo 'SELECT LOWER(REPLACE(trx_state, " ", "_")) AS state, count(*) AS cnt from information_schema.INNODB_TRX GROUP BY state;'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep running|awk '{print $2}')
                         if [ "$value" == "" ];then
                            echo 0
                         else
                            echo $value
                         fi
                        ;;
       Innodb_trx_lock_wait)
                         value=$(echo 'SELECT LOWER(REPLACE(trx_state, " ", "_")) AS state, count(*) AS cnt from information_schema.INNODB_TRX GROUP BY state;'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep lock_wait|awk '{print $2}')
                         if [ "$value" == "" ];then
                            echo 0
                         else
                            echo $value
                         fi
                        ;;
    Innodb_trx_rolling_back)
                         value=$(echo 'SELECT LOWER(REPLACE(trx_state, " ", "_")) AS state, count(*) AS cnt from information_schema.INNODB_TRX GROUP BY state;'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep rolling_back|awk '{print $2}')
                         if [ "$value" == "" ];then
                            echo 0
                         else
                            echo $value
                         fi
                        ;;
    Innodb_trx_committing)
                         value=$(echo 'SELECT LOWER(REPLACE(trx_state, " ", "_")) AS state, count(*) AS cnt from information_schema.INNODB_TRX GROUP BY state;'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep committing|awk '{print $2}')
                         if [ "$value" == "" ];then
                            echo 0
                         else
                            echo $value
                         fi
                        ;;
 Innodb_trx_history_list_length)
                         echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "History list length"|awk '{print $4}'
                        ;;
    Innodb_last_checkpoint_at)
                         echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "Last checkpoint at"|awk '{print $4}'
                        ;;

   Innodb_log_sequence_number)
                         echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "Log sequence number"|awk '{print $4}'
                        ;;
    Innodb_log_flushed_up_to)
                         echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "Log flushed up to"|awk '{print $5}'
                        ;;
   Innodb_open_read_views_inside_innodb)
                         echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "read views open inside InnoDB"|awk '{print $1}'
                        ;;
        Innodb_queries_inside_innodb)
                        echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "queries inside InnoDB"|awk '{print $1}'
                        ;;
        Innodb_queries_in_queue)
                        echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "queries in queue"|awk '{print $5}'
                        ;;
        Innodb_hash_seaches)
                        echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "hash searches"|awk '{print $1}'
                        ;;
       Innodb_non_hash_searches)
                        echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "non-hash searches/s"|awk '{print $4}'
                        ;;
       Innodb_node_heap_buffers)
                        echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "node heap"|awk '{print $8}'
                       ;;
       Innodb_mutex_os_waits)
                        echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "Mutex spin waits"|awk '{print $9}'
                       ;;
       Innodb_mutex_spin_rounds)
                        echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "Mutex spin waits"|awk '{print $6}'|tr -d ','
                       ;;
       Innodb_mutex_spin_waits)
                        echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf -N|grep "Mutex spin waits"|awk '{print $4}'|tr -d ','
                       ;; 

                   *)
                    echo "wrong parameter"
                    ;;

esac

4.添加监控模板

附件中包含对MySQL实例，MySQL Master，MySQL Slave和MySQL InnoDB的监控

参考文章：

http://www.percona.com/doc/percona-monitoring-plugins/1.0/cacti/mysql-templates.html

http://hi.baidu.com/ytjwt/item/2bbd69a0869d1ef314329b6a

http://www.fromdual.com/mpm-installation-guide

http://www.fromdual.com/mysql-performance-monitor

http://dev.mysql.com/doc/refman/5.5/en/information-schema.html

FROMDUAL官方模板和脚本下载地址如下，感兴趣的可以看看

http://support.fromdual.com/admin/public/download.php?operation=download&file_name=mysql_performance_monitor-0.9.3.tar.gz&id=1996