zabbix 监控MySQL
现在我来说一下我的监控环境
zabbix-3.0.3
MySQL-5.6.23
1.首先我们要登录MySQL，创建一个监控MySQL的用户
GRANT USAGE,PROCESS,SUPER,REPLICATION CLIENT,REPLICATION SLAVE ON *.* TO 'zabbixagent'@'localhost' IDENTIFIED BY 'zabbixagent';
2。根据zabbix监控MySQL的key改写脚本
[root@DBSlave-live etc]# cd zabbix_agentd.conf.d/
[root@DBSlave-live zabbix_agentd.conf.d]# ls
mysql_status.conf
[root@DBSlave-live zabbix_agentd.conf.d]# cat mysql_status.conf
### MySQL DB Infomation UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N|awk '{print $$2}' UserParameter=mysql.variables[*],echo "show global variables where Variable_name='$1';"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N|awk '{print $$2}' UserParameter=mysql.ping,/data/usr/local/mysql/bin/mysqladmin --defaults-file=/data/usr/local/zabbix/etc/.my.cnf ping|grep -c alive UserParameter=mysql.version,echo "select version();"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N #### MySQL Slave Information UserParameter=mysql.slave.Seconds_Behind_Master,echo "show slave status\G"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf|grep "Seconds_Behind_Master"|awk '{print $2}' #UserParameter=mysql.slave.Slave_IO_Running,echo "show slave status\G"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf|grep "Slave_IO_Running"|awk '{print $2}' #UserParameter=mysql.slave.Slave_SQL_Running,echo "show slave status\G"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf|grep "Slave_SQL_Running"|awk '{print $2}' #UserParameter=mysql.replication[*],echo "show slave status\G"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf|grep "Slave_IO_Running"|awk '{print $2}'|grep -c Yes UserParameter=mysql.replication[*],echo "show slave status\G"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf|grep -E "Slave_IO_Running|Slave_SQL_Running"|awk '{print $2}'|grep -c Yes UserParameter=mysql.slave.Relay_Log_Pos,echo "show slave status\G"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf|grep "Exec_Master_Log_Pos"|awk '{print $2}' UserParameter=mysql.process,echo "show processlist"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf|grep -v "Id"|wc -l #### MySQL InnoDB Information # UserParameter=mysql.innodb[*],/usr/local/zabbix/bin/mysql_innodb_status.sh $1
[root@DBSlave-live bin]# pwd
/data/usr/local/zabbix/bin
[root@DBSlave-live bin]# ls
mysql_health.sh mysql_innodb_status.sh zabbix_get zabbix_sender
[root@DBSlave-live bin]# cat mysql_innodb_status.sh
#!/bin/bash
#Get InnoDB Row Lock Details and InnoDB Transcation Lock Memory
#/data/usr/local/mysql/bin/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
#/data/usr/local/mysql/bin/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.
#/data/usr/local/mysql/bin/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;"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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;"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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;"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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;"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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;"|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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;'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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;'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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;'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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;'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N|grep "History list length"|awk '{print $4}'
;;
Innodb_last_checkpoint_at)
echo 'show engine innodb status\G'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N|grep "Last checkpoint at"|awk '{print $4}'
;;
Innodb_log_sequence_number)
echo 'show engine innodb status\G'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N|grep "queries inside InnoDB"|awk '{print $1}'
;;
Innodb_queries_in_queue)
echo 'show engine innodb status\G'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N|grep "queries in queue"|awk '{print $5}'
;;
Innodb_hash_seaches)
echo 'show engine innodb status\G'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N|grep "hash searches"|awk '{print $1}'
;;
Innodb_non_hash_searches)
echo 'show engine innodb status\G'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N|grep "node heap"|awk '{print $8}'
;;
Innodb_mutex_os_waits)
echo 'show engine innodb status\G'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N|grep "Mutex spin waits"|awk '{print $9}'
;;
Innodb_mutex_spin_rounds)
echo 'show engine innodb status\G'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/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'|/data/usr/local/mysql/bin/mysql --defaults-file=/data/usr/local/zabbix/etc/.my.cnf -N|grep "Mutex spin waits"|awk '{print $4}'|tr -d ','
;;
*)
echo "wrong parameter"
;;
esac
要是不定义下面这个文件的话，直接在配置文件里面直接写用户名和密码的话会报错
/etc/zabbix/my.conf 这个文件定义的是zabbix这个mysql用户的信息，然后直接指定这个文件，如果我们在命令行直接输入zabbix的用户密码的话会一行提示，影响我们zabbix取值，例如：
如果我们直接指定了这个文件，那么那行提示就不会出现
[root@DBSlave-live etc]# ls zabbix_agentd.conf zabbix_agentd.conf.d [root@DBSlave-live etc]# ls -al total 20 drwxr-xr-x 3 root root 4096 Nov 17 16:42 . drwxr-xr-x 7 root root 4096 Nov 17 16:41 .. -rw-r--r-- 1 root root 99 Nov 2 15:35 .my.cnf -rw-r--r-- 1 root root 182 Nov 2 15:32 zabbix_agentd.conf drwxr-xr-x 2 root root 4096 Nov 18 11:16 zabbix_agentd.conf.d [root@DBSlave-live etc]# cat .my.cnf [mysql] user=zabbixagent password=konzh123 [mysqladmin] user=zabbixagent password=konzh123
这里我们还需要修改一下zabbix客户端的配置文件
[root@DBSlave-live etc]# vim zabbix_agentd.conf LogFile=/tmp/zabbix_agentd.log Server=13.59.15.9 ServerActive=13.59.15.9 Hostname=DB_Slave_245 Include=/data/usr/local/zabbix/etc/zabbix_agentd.conf.d/* UnsafeUserParameters=1 #允许自定义key ~
下面是在MySQLserver端测试一下，看一下自定义的key能不能获取到值
[root@openvpn_nagios_cacti src]# zabbix_get -s 13.59.15.45 -k "mysql.replication" 2 [root@openvpn_nagios_cacti src]# zabbix_get -s 13.59.15.45 -k "mysql.replication" 1 [root@openvpn_nagios_cacti src]# zabbix_get -s 13.59.15.45 -k "mysql.process" 4
我们都配置完成之后，我们重启一下zabbix客户端
*************************************************************************************************************
我们的脚本都写好了，通过zabbix_get也是可以获取到数据的，现在我们在zabbix上来干了
配置--->主机--->DB_Slave_245--->监控项--->创建监控项
这里我们自定义的key 需要手动输入key名称（就是你在客户端自己定义的）
然后创建触发器（triggers）
点击创建触发器--->名称--->表达式构造器--->构造
创建表达式的时候，上面的Item就是刚刚之前创建的item，自己选择一下
检测它最后一次的取值是不是小于2，定义N的值为2（因为有两个线程，IO线程和SQL线程都是ＹＥＳ的时候这个值才会是２），如果取得的值小于2就说明有问题啦
这里我们ｉｎｓｅｒｔ之后，点击一下增加表达式（Ａｄｄ），是ｅｘｐｒｅｓｓｉｏｎ下面的Ａｄｄ，最后才点击最下面的Ａｄｄ（添加触发器）
还有就是这里的严重性选择一下，这里要是不选的话，是不会触发报警的，我这里一开始忘了选，我测试的时候，明明是主从不同步的，但是就是不报警，回头看才知道这里的严重性没有选择
文章摘自：
http://blog.sctux.com/?p=396
http://www.tuicool.com/articles/eEJJzi3
http://john88wang.blog.51cto.com/2165294/1596272?utm_source=tuicool&utm_medium=referral
