使用zabbix低级发现功能监控MySQL
在有些情况下,我们不能对MySQL实例所在的主机上安装zabbix agent,只能访问MySQL实例,例如使用Ucloud提供的UDB.这时我们就需要使用Zabbix 的LLD功能来监控MySQL
参见使用zabbix全方位监控MySQL
1.添加MySQL监控账号
GRANT USAGE,PROCESS,SUPER,REPLICATION CLIENT,REPLICATION SLAVE ON *.* TO 'zabbixagent' IDENTIFIED BY 'zabbixagent';
flush privileges;
在/usr/local/zabbix/etc/目录下创建需要监控MySQL的连接信息
发现脚本会根据是否以Master和Slave来识别并传递不同的宏
.my.cnf10.10.41.7:3306:Master
.my.cnf10.10.41.8:3306:Slave
[mysql] user=zabbixagent password=zabbixagent host=10.10.41.8 [mysqladmin] user=zabbixagent password=zabbixagent host=10.10.41.8
具体连接信息根据情况而定
2.添加MySQL实例,MySQL Master和MySQL Slave的发现脚本
# python mysql_discovery.py
{
"data":[
{
"{#MYSQL_DB}":"10.10.41.7:3306:Master"
},
{
"{#MYSQL_DB}":"10.10.41.8:3306:Slave"
}
]
}
#/usr/bin/python
#This script is used to discovery disk on the server
import subprocess
import json
args='''ls -al /usr/local/zabbix/etc/.my.cnf*|awk '{print $NF}'|sed "s;/usr/local/zabbix/etc/.my.cnf;;g"'''
t=subprocess.Popen(args,shell=True,stdout=subprocess.PIPE).communicate()[0]
mysql_dbs=[]
for mysql in t.split('\n'):
if len(mysql) != 0:
mysql_dbs.append({'{#MYSQL_DB}':mysql})
print json.dumps({'data':mysql_dbs},indent=4,separators=(',',':'))
# python mysql_master_discovery.py
{
"data":[
{
"{#MYSQL_MASTER}":"10.10.41.7:3306:Master"
}
]
}
#/usr/bin/python
#This script is used to discovery disk on the server
import subprocess
import json
args='''ls -al /usr/local/zabbix/etc/.my.cnf*|awk '{print $NF}'|sed "s;/usr/local/zabbix/etc/.my.cnf;;g"'''
t=subprocess.Popen(args,shell=True,stdout=subprocess.PIPE).communicate()[0]
mysql_dbs=[]
for mysql in t.split('\n'):
if len(mysql) != 0 and mysql.endswith(tuple(['Master','master'])):
mysql_dbs.append({'{#MYSQL_MASTER}':mysql})
if len(mysql_dbs) == 0:
print "No MySQL Master Found"
else:
print json.dumps({'data':mysql_dbs},indent=4,separators=(',',':'))
# python mysql_slave_discovery.py
{
"data":[
{
"{#MYSQL_SLAVE}":"10.10.41.8:3306:Slave"
}
]
}
#/usr/bin/python
#This script is used to discovery disk on the server
import subprocess
import json
args='''ls -al /usr/local/zabbix/etc/.my.cnf*|awk '{print $NF}'|sed "s;/usr/local/zabbix/etc/.my.cnf;;g"'''
t=subprocess.Popen(args,shell=True,stdout=subprocess.PIPE).communicate()[0]
mysql_dbs=[]
for mysql in t.split('\n'):
if len(mysql) != 0 and mysql.endswith(tuple(['Slave','slave'])):
mysql_dbs.append({'{#MYSQL_SLAVE}':mysql})
if len(mysql_dbs) == 0:
print "No MySQL Slave Found"
else:
print json.dumps({'data':mysql_dbs},indent=4,separators=(',',':'))
传递不同的宏值避免添加不需要的模板
3.添加zabbix配置文件discovery_mysql_status.conf
##discovery mysql instance
UserParameter=mysql.discovery,/usr/bin/python /usr/local/zabbix/bin/mysql_discovery.py
UserParameter=mysql.innodb.discovery,/usr/bin/python /usr/local/zabbix/bin/mysql_discovery.py
UserParameter=mysql.master.discovery,/usr/bin/python /usr/local/zabbix/bin/mysql_master_discovery.py
UserParameter=mysql.slave.discovery,/usr/bin/python /usr/local/zabbix/bin/mysql_slave_discovery.py
### MySQL DB Infomation
#
UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$2 -N|awk '{print $$2}'
UserParameter=mysql.variables[*],echo "show global variables where Variable_name='$1';"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$2 -N|awk '{print $$2}'
UserParameter=mysql.ping[*],mysqladmin --defaults-file=/usr/local/zabbix/etc/.my.cnf$1 ping|grep -c alive
#UserParameter=mysql.version,echo "select version();"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1 -N
#### MySQL Master Information
UserParameter=mysql.master.Slave_count[*],echo "show slave hosts;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1 -N|wc -l
UserParameter=mysql.master.Binlog_file[*],echo "show master status;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1 -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$1 -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$1 -N|awk '{print $$2}'
UserParameter=mysql.master.Binlog_count[*],echo "show binary logs;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1 -N|wc -l
UserParameter=mysql.master.Binlog_total_size[*],echo "show binary logs;"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1 -N|awk '{sum+=$NF}END{print sum}'
#### MySQL Slave Information
UserParameter=mysql.slave.Seconds_Behind_Master[*],echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1|grep "Seconds_Behind_Master"|awk '{print $$2}'
UserParameter=mysql.slave.Slave_IO_Running[*],echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1|grep "Slave_IO_Running"|awk '{print $$2}'
UserParameter=mysql.slave.Slave_SQL_Running[*],echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1|grep "Slave_SQL_Running"|awk '{print $$2}'
UserParameter=mysql.slave.Relay_Log_Pos[*],echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1|grep "Relay_Log_Pos"|awk '{print $$2}'
UserParameter=mysql.slave.Exec_Master_Log_Pos[*],echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1|grep "Exec_Master_Log_Pos"|awk '{print $$2}'
UserParameter=mysql.slave.Read_Master_Log_Pos[*],echo "show slave status\G"|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$1|grep "Read_Master_Log_Pos"|awk '{print $$2}'
#### MySQL InnoDB Information
#
UserParameter=mysql.innodb[*],/usr/local/zabbix/bin/discovery_mysql_innodb_status.sh $1 $2
####MySQL MyISAM Information
#
InnoDB部分监控项目需要使用单独的脚本discovery_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
mysql_host=$2
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$mysql_host -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$mysql_host -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$mysql_host -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$mysql_host -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$mysql_host -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$mysql_host -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$mysql_host -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$mysql_host -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$mysql_host -N|grep committing|awk '{print $2}')
if [ "$value" == "" ];then
echo 0
else
echo $value
fi
;;
Innodb_trx_history_list_length)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "History list length"|awk '{print $4}'
;;
Innodb_last_checkpoint_at)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "Last checkpoint at"|awk '{print $4}'
;;
Innodb_log_sequence_number)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "Log sequence number"|awk '{print $4}'
;;
Innodb_log_flushed_up_to)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "Log flushed up to"|awk '{print $5}'
;;
Innodb_open_read_views_inside_innodb)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "read views open inside InnoDB"|awk '{print $1}'
;;
Innodb_queries_inside_innodb)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "queries inside InnoDB"|awk '{print $1}'
;;
Innodb_queries_in_queue)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "queries in queue"|awk '{print $5}'
;;
Innodb_hash_seaches)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "hash searches"|awk '{print $1}'
;;
Innodb_non_hash_searches)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "non-hash searches/s"|awk '{print $4}'
;;
Innodb_node_heap_buffers)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "node heap"|awk '{print $8}'
;;
Innodb_mutex_os_waits)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "Mutex spin waits"|awk '{print $9}'
;;
Innodb_mutex_spin_rounds)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "Mutex spin waits"|awk '{print $6}'|tr -d ','
;;
Innodb_mutex_spin_waits)
echo 'show engine innodb status\G'|mysql --defaults-file=/usr/local/zabbix/etc/.my.cnf$mysql_host -N|grep "Mutex spin waits"|awk '{print $4}'|tr -d ','
;;
*)
echo "wrong parameter"
;;
esac
3.添加zabbix监控模板
