Zabbix之九—Zabbix监控mysq数据库

实战一:在percona插件监控mariadb数据库

1、环境准备:

node1:192.168.7.101 master-mysql主数据库

node2:192.168.7.102 slave-mysql从数据库

node4:192.168.7.104 zabbix-proxy服务器

(1)主从数据库都需要安装zabbix-agent

# yum install zabbix-agent -y  

(2)node4主机需要安装zabbix-proxy-mysql包

# yum install zabbix-proxy-mysql -y

2、安装配置主从数据库

(1)在node1和node2主机上安装mariadb-server数据库

# yum install mariadb-server -y

(2)配置主服务器mariadb数据库:/etc/my.cnf 

[mysqld]socket=/var/lib/mysql/mysql.sockuser=mysqlsymbolic-links=0datadir=/data/mysqlinnodb_file_per_table=1relay-log = /data/mysqlserver-id=101log-bin=/data/mysql/master-log

创建一个存放数据库目录:

# mkdir /data/mysql -p# chown -R mysql.mysql /data/mysql

(3)启动mariadb主服务器的数据库

# systemctl start mariadb

(4)配置从服务器的mariadb数据库:vim /etc/my.cnf

[mysqld]socket=/var/lib/mysql/mysql.sockuser=mysqlsymbolic-links=0datadir=/data/mysqlinnodb_file_per_table=1relay-log = /data/mysqlserver-id=102log-bin=/data/mysql/master-log

创建一个存放数据库目录:

# mkdir /data/mysql -p# chown -R mysql.mysql /data/mysql

(5)启动从服务器的数据库

# systemctl start mariadb

(6)在主服务器上(node1)创建linux数据库,并授权

[root@node1 ~]# mysqlWelcome to the MariaDB monitor. Commands end with ; or \g.Your MariaDB connection id is 11Server version: 10.3.10-MariaDB-log MariaDB ServerCopyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.MariaDB [(none)]> create database linux; # 创建linux数据库MariaDB [(none)]> GRANT REPLICATION SLAVE,REPLICATION CLIENT ON *.* TO ‘linux‘@‘192.168.7.%‘ IDENTIFIED BY ‘123456‘;Query OK, 0 rows affected (0.003 sec)

(7)在主服务器的数据库备份数据,并导出到/opt目录下 

[root@node1 ~]# mysqldump -A -F --single-transaction --master-data=1 > /opt/backup.sql 

(8)将备份出来的backup.sql数据传到从数据库上(node2主机上)  

[root@node1 ~]# scp /opt/backup.sql 192.168.7.102:/opt

(9)查看主数据库传到从数据库的二进制日志初始的名称:vim /opt/backup.sql

 

(10)在从服务器上,将/opt/backup.sql数据传到从服务器上

[root@node2 ~]# mysql < /opt/backup.sql [root@node2 ~]# mysql # 进入数据库Welcome to the MariaDB monitor. Commands end with ; or \g.Your MariaDB connection id is 3Server version: 5.5.64-MariaDB MariaDB ServerCopyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.MariaDB [(none)]> show databases ; # 查看导入的linux数据库信息,此时已经导入到数据库内。+--------------------+| Database |+--------------------+| information_schema || linux || mysql || performance_schema || test |+--------------------+5 rows in set (0.00 sec)MariaDB [(none)]> CHANGE MASTER TO MASTER_HOST=‘192.168.7.101‘,MASTER_USER=‘linux‘,MASTER_PASSWORD=‘123456‘,MASTER_PORT=3306,MASTER_LOG_FILE=‘mysql-bin.000001‘,MASTER_LOG_POS=342; # 同步主从数据库,从mysql-bin.000001开始复制,文件大小是342MariaDB [(none)]> start slave ; # 开始复制主数据库信息Query OK, 0 rows affected (0.00 sec)MariaDB [(none)]> show slave status\G; #查看此时的状态*************************** 1. row ***************************Slave_IO_State: Waiting for master to send eventMaster_Host: 192.168.7.101Master_User: linuxMaster_Port: 3306Connect_Retry: 60Master_Log_File: mysql-bin.000001Read_Master_Log_Pos: 385Relay_Log_File: node2-relay-bin.000002Relay_Log_Pos: 583Relay_Master_Log_File: mysql-bin.000001Slave_IO_Running: Yes # 两个为yes,说明正常。Slave_SQL_Running: YesReplicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0Last_Error: Skip_Counter: 0Exec_Master_Log_Pos: 385Relay_Log_Space: 877Until_Condition: NoneUntil_Log_File: Until_Log_Pos: 0Master_SSL_Allowed: NoMaster_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0Master_SSL_Verify_Server_Cert: NoLast_IO_Errno: 0Last_IO_Error: Last_SQL_Errno: 0Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 1

查看此时的主从IO和SQL运行状态都为yes,说明正常。 

 

 3、官网下载percona的zabbix监控插件

 官网下载地址:https://www.percona.com/downloads/

 官方文档:https://www.percona.com/doc/percona-monitoring-plugins/LATEST/zabbix/index.html

 安装教程:https://www.percona.com/doc/percona-monitoring-plugins/LATEST/zabbix/index.html#installation-instructions

(1)进入官网然,然后选择Percona的zabbix监控插件

 

(2)选择最新版本,并选择centos7系统,然后复制percona关联的zabbix的插件包链接,在linux上下载并安装

 

 (3)在(从服务器上)linux系统上开始下载percona关联的zabbix插件

[root@node2 ~]# wget https://www.percona.com/downloads/percona-monitoring-plugins/percona-monitoring-plugins-1.1.8/binary/redhat/7/x86_64/percona-zabbix-templates-1.1.8-1.noarch.rpm--2020-02-25 21:11:12-- https://www.percona.com/downloads/percona-monitoring-plugins/percona-monitoring-plugins-1.1.8/binary/redhat/7/x86_64/percona-zabbix-templates-1.1.8-1.noarch.rpmResolving www.percona.com (www.percona.com)... 74.121.199.234Connecting to www.percona.com (www.percona.com)|74.121.199.234|:443... connected.HTTP request sent, awaiting response... 200 OKLength: 28296 (28K) [application/x-redhat-package-manager]Saving to: ‘percona-zabbix-templates-1.1.8-1.noarch.rpm’100%[=======================================================================================================>] 28,296 38.0KB/s in 0.7s 2020-02-25 21:11:25 (38.0 KB/s) - ‘percona-zabbix-templates-1.1.8-1.noarch.rpm’ saved [28296/28296]

(4)在从服务器上安装percona关联的zabbix插件

[root@node2 ~]# rpm -ivh percona-zabbix-templates-1.1.8-1.noarch.rpm warning: percona-zabbix-templates-1.1.8-1.noarch.rpm: Header V4 DSA/SHA1 Signature, key ID cd2efd2a: NOKEYPreparing... ################################# [100%]Updating / installing... 1:percona-zabbix-templates-1.1.8-1 ################################# [100%]Scripts are installed to /var/lib/zabbix/percona/scriptsTemplates are installed to /var/lib/zabbix/percona/templates

(5)在从服务器上复制percona的zabbix插件模板

[root@node2 ~]# cp /var/lib/zabbix/percona/templates/userparameter_percona_mysql.conf /etc/zabbix/zabbix_agentd.d/

(6)配置从服务器的/etc/zabbix/zabbix_agentd.conf文件

Server=192.168.7.100,192.168.7.104 # zabbix server服务器端的IP地址和主动模式代理服务器的IP地址ServerActive=192.168.7.104 # 代理服务器的IP地址Hostname=192.168.7.102 # 从服务器的IP地址

(7)重启zabbix-agent服务: systemctl restart zabbix-agent

(8)新建一个配置文件:/var/lib/zabbix/percona/scripts/ss_get_mysql_stats.php.cnf

<?php$mysql_user= ‘root‘;$mysql_pass= ‘‘;

(9)在从服务器上安装php和php-mysql包

# yum install php php-mysql -y

(10)用脚本测试页面是否会显示数据,如果显示数据,说明正确

[root@node2 ~]# /var/lib/zabbix/percona/scripts/get_mysql_stats_wrapper.sh gg5599

(11)在从服务器验证完之后,因此测试的文件是root执行生成的文件,此时在zabbix-server服务器端验证就会获取不到数据,所以必须删除脚本测试的临时文件,临时文件在/tmp/目录下。

[root@node2 ~]# rm -rf /tmp/localhost-mysql_cacti_stats.txt 

(12)在zabbix-server服务器端获取数据

[root@zabbix ~]# zabbix_get -s 192.168.7.102 -p 10050 -k "MySQL.Key-read-requests"5599

(13)此时在从服务器上查看/tmp临时目录下的文件,就会创建以zabbix用户创建的文件

[root@node2 ~]# ll /tmp/localhost-mysql_cacti_stats.txt -rw-rw-r-- 1 zabbix zabbix 1237 Feb 25 22:09 /tmp/localhost-mysql_cacti_stats.txt

在zabbix网页上创建Percona模板

(1)导入自制的Percona模板

 

 (2)将主机关联到前面创建的主动模式的proxy代理服务器node4上

   

 (3)关联Percon模板

 

(4)将percona模板的监控项被动模式改为主动模式

  

(5)此时可以看到从服务器的主机的zabbix-agent变绿了

 

 (6)查看此时监控的结果

   

 实战二:自定义监控项监控数据库

在从服务器上创建检查主从同步自定义监控脚本

(1)在从服务器上/etc/zabbix/zabbix_agentd.d/目录下创建脚本,调用脚本查看返回的值,脚本名称为mysql_monitor.sh

#!/bin/bashSeconds_Behind_Master(){ NUM=`mysql -uroot -hlocalhost -e "show slave status\G;" | grep "Seconds_Behind_Master:" | awk -F: ‘{print $2}‘` echo $NUM}master_slave_check(){NUM1=`mysql -uroot -hlocalhost -e "show slave status\G;" | grep "Slave_IO_Running" | awk -F: ‘{print $2}‘ | sed ‘s/^[ \t]*//g‘`#echo $NUM1NUM2=`mysql -uroot -hlocalhost -e "show slave status\G;" | grep "Slave_SQL_Running:" | awk -F: ‘{print $2}‘ | sed ‘s/^[ \t]*//g‘`#echo $NUM2if test $NUM1 == "Yes" && test $NUM2 == "Yes";then echo 50else echo 100fi}main(){ case $1 in Seconds_Behind_Master) Seconds_Behind_Master; ;; master_slave_check) master_slave_check ;; esac}main $1

(2)验证脚本返回值,检查返回为50,时延返回为0,说明没问题。

[root@node2 zabbix_agentd.d]# bash mysql_monitor.sh master_slave_check50[root@node2 zabbix_agentd.d]# bash mysql_monitor.sh Seconds_Behind_Master0

(3)将mysql_monitor.sh加上执行权限

# chomd +x mysql_monitor.sh

(4)创建一个调用脚本的文件:vim /etc/zabbix/zabbix_agentd.d/mysql_monitor.conf

UserParameter=mysql_monitor[*],/etc/zabbix/zabbix_agentd.d/mysql_monitor.sh $1

(5)重启zabbix-agent服务,并在zabbix-server服务器端验证返回效果:systemctl restart  zabbix-agent   

(6)在zabbix-server服务器端进行验证此时的脚本返回值,和在服务器上返回一致。

[root@zabbix ~]# zabbix_get -s 192.168.7.102 -p 10050 -k "mysql_monitor[master_slave_check]"50[root@zabbix ~]# zabbix_get -s 192.168.7.102 -p 10050 -k "mysql_monitor[Seconds_Behind_Master]"0

4、在zabbix网页上创建模板,关联proxy主动模式代理的模板

(1)创建mysql_linux模板

   

(2)创建在创建了mysql_linux模板下,创建监控项

   

(3)添加从服务器主机

   

 (4)将从服务器关联到创建mysql监控的模板上。

 

 (5)创建主从同步检查的图形

   

 (6)创建mysql时延监控项

 

 (7)创建mysql时延监控图形

 

 (8)创建mysql主从同步检查触发器

   

 (9)创建主从同步延时触发器,时延大于300ms就会触发动作

     

 (10)查看此时的mysql监控时延信息。

    

 (11)查看mysql监控的同步信息

   

 

 

 

 

 

 

 

  

  

  

  

  

 

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