zabbix5.0監控mysql

最近開發讓對mysql數據庫進行監控，由於公司的開發大部分都是以WINDOWS環境下運行的，只有少部分是在LINUX下。我自己先在linux做了一個測試。按照網上教程折騰了三天。最后看着官方教程很輕松的就配置完成了。

先來看一下官方說明：

https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/db/mysql_agent?at=refs%2Fheads%2Ffeature%2FZBX-20728-5.0

Template DB MySQL by Zabbix agent

Overview

For Zabbix version: 5.0 and higher
The template is developed for monitoring DBMS MySQL and its forks.

This template was tested on:

• MySQL, version 5.7, 8.0
• Percona, version 8.0
• MariaDB, version 10.4

Setup

See Zabbix template operation for basic instructions.

1. Install Zabbix agent and MySQL client. If necessary, add the path to the mysql and mysqladmin utilities to the global environment variable PATH.
2. Copy template_db_mysql.conf into the folder with Zabbix agent configuration (/etc/zabbix/zabbix_agentd.d/ by default). Don't forget to restart Zabbix agent.
3. Create a MySQL user for monitoring (<password> at your discretion):

CREATE USER 'zbx_monitor'@'%' IDENTIFIED BY '<password>';
GRANT REPLICATION CLIENT,PROCESS,SHOW DATABASES,SHOW VIEW ON *.* TO 'zbx_monitor'@'%';

For more information, please see MySQL documentation https://dev.mysql.com/doc/refman/8.0/en/grant.html

4. Create .my.cnf in the home directory of Zabbix agent for Linux (/var/lib/zabbix by default ) or my.cnf in c:\ for Windows. The file must have three strings:

[client]
user='zbx_monitor'
password='<password>'

NOTE: Use systemd to start Zabbix agent on Linux OS. For example, in Centos use "systemctl edit zabbix-agent.service" to set the required user to start the Zabbix agent.

Add the rule to the SELinux policy (example for Centos):

# cat <<EOF > zabbix_home.te
module zabbix_home 1.0;

require {
        type zabbix_agent_t;
        type zabbix_var_lib_t;
        type mysqld_etc_t;
        type mysqld_port_t;
        type mysqld_var_run_t;
        class file { open read };
        class tcp_socket name_connect;
        class sock_file write;
}

#============= zabbix_agent_t ==============

allow zabbix_agent_t zabbix_var_lib_t:file read;
allow zabbix_agent_t zabbix_var_lib_t:file open;
allow zabbix_agent_t mysqld_etc_t:file read;
allow zabbix_agent_t mysqld_port_t:tcp_socket name_connect;
allow zabbix_agent_t mysqld_var_run_t:sock_file write;
EOF
# checkmodule -M -m -o zabbix_home.mod zabbix_home.te
# semodule_package -o zabbix_home.pp -m zabbix_home.mod
# semodule -i zabbix_home.pp
# restorecon -R /var/lib/zabbix

---

首先要注意Mysql版本及Zabbix Server版本
安裝步驟：
1、安裝mysql及zabbix agent，把mysql及mysqladmin加入環境變量。
2、復制 template_db_mysql.conf 到 /etc/zabbix/zabbix_agentd.d/目錄下。
復制完畢以后記着不要忘記重啟zabbix agent . systemctl restart agent客戶端

template_db_mysql.conf內容

#template_db_mysql.conf created by Zabbix for "Template DB MySQL" and Zabbix 4.2
#For OS Linux: You need create .my.cnf in zabbix-agent home directory (/var/lib/zabbix by default) 
#For OS Windows: You need add PATH to mysql and mysqladmin and create my.cnf in %WINDIR%\my.cnf,C:\my.cnf,BASEDIR\my.cnf https://dev.mysql.com/doc/refman/5.7/en/option-files.html
#The file must have three strings:
#[client]
#user='zbx_monitor'
#password='<password>'
#
UserParameter=mysql.ping[*], mysqladmin -h"$1" -P"$2" ping
UserParameter=mysql.get_status_variables[*], mysql -h"$1" -P"$2" -sNX -e "show global status"
UserParameter=mysql.version[*], mysqladmin -s -h"$1" -P"$2" version
UserParameter=mysql.db.discovery[*], mysql -h"$1" -P"$2" -sN -e "show databases"
UserParameter=mysql.dbsize[*], mysql -h"$1" -P"$2" -sN -e "SELECT COALESCE(SUM(DATA_LENGTH + INDEX_LENGTH),0) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA='$3'"
UserParameter=mysql.replication.discovery[*], mysql -h"$1" -P"$2" -sNX -e "show slave status"
UserParameter=mysql.slave_status[*], mysql -h"$1" -P"$2" -sNX -e "show slave status"

3、建立zabbix專用的mysql用戶用來監控mysql相關性能數據。

CREATE USER 'zbx_monitor'@'%' IDENTIFIED BY '<password>';
GRANT REPLICATION CLIENT,PROCESS,SHOW DATABASES,SHOW VIEW ON *.* TO 'zbx_monitor'@'%';

4、在/var/lib/zabbix  下建立.my.cnf 文件，注意 .my.cnf 前面是有一個標點的.文件內容如下;

[client]
user='zbx_monitor'
password='<password>'

以上步驟完成以后需要在zabbix   server中建立監控主機並添加模板Template DB MySQL by Zabbix agent.

然后需要等待5-10分釧再查看mysql已有監控數據.