Zabbix monitoring Mysql database auto-discovery

The results show map

Let us look at the results of FIG, automatic discovery ZABBIX second monitor Mysql add, delete, change, by monitoring the flow rate into and out automatic discovery Mysql results is as follows:

Mysql to Zabbix monitoring authority

First, create a user monitoring, usage on a relatively small authority, safer. sql follows

grant usage on *.* to 'monitor'@'127.0.0.1' identified by 'shijiangepwd';
flush privileges;

Test monitoring whether the user entered into force, the test results are as follows

mysql -umonitor -h 127.0.0.1 -pshijiangepwd -A
mysql> show global status;
+-----------------------------------------------+-------------+
| Variable_name                                 | Value       |
+-----------------------------------------------+-------------+
| Aborted_clients                               | 0           |
| Aborted_connects                              | 0           |
| Binlog_cache_disk_use                         | 0           |
| Binlog_cache_use                              | 0           |
| Binlog_stmt_cache_disk_use                    | 0           |
| Binlog_stmt_cache_use                         | 0           |

Shell scripts written in monitoring

Script uses Mysql show global status to monitor status information mysql_check.sh:

port=$1
key=$2
mysql -umonitor -pshijiangepwd -h 127.0.0.1 -P${port} -e "show global status" |grep "${key}\s" |awk '{print $2}'

Results are as follows, Zabbix monitoring only need to return a number to

[root@test ~]# sh mysql_check.sh 3306 Bytes_received
439
[root@test ~]# sh mysql_check.sh 3306 Bytes_sent
11935

Mysql monitoring ports use auto-discovery

Mysql port using the auto-discovered script mysql_discovery.py

# -*- coding: utf-8 -*-
try:
  import json
except:
  import simplejson as json
import commands

(status, output) = commands.getstatusoutput(""" sudo netstat -tlnp|grep mysql|awk '{print $4}'|awk -F':' '{print $2}'|sort -u """)
outputs = output.split('\n')
result = []
for one in  outputs:
  result.append( {'{#ONE}': one} )
print( json.dumps({'data':result},sort_keys=True,indent=4) )

The default Zabbix users can not use the netstat command, so you have to use sudo, Zabbix user needs to add Sudo privileges visudo

zabbix ALL= NOPASSWD: /bin/netstat
Defaults:zabbix   !requiretty

Mysql port auto-discovery results are as follows

[root@test ~]# python mysql_discovery.py 
{
    "data": [
        {
            "{#ONE}": "3306"
        }
    ]
}

Monitored client add custom Key Configuration

Monitored client needs to add the following configuration and then restart the Zabbix Agent

UserParameter=mysql.discovery,python /etc/zabbix/mysql_discovery.py
UserParameter=mysql.check[*],sh /etc/zabbix/mysql_check.sh $1 $2 2>/dev/null

Why should we add 2> / dev / null, this version is the prevention of high Mysql to write code directly in command there will be the following safety tips, so too filtered

mysql: [Warning] Using a password on the command line interface can be insecure.

Zabbix monitoring configuration screenshots