zabbix 监控mysql的方法

zabbix部署文档

zabbix部署完之后

zabbix-agent操作

 1.监控mysql，首先要先安装mysql

[root@localhost ~]# yum -y install mariadb mariadb-server

2.编写mysql监控项的脚本

在zabbix-agent先授权个用户 不然测试时没有权限

[root@localhost ~]# mysql
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 33
Server version: 5.5.65-MariaDB MariaDB Server

Copyright (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)]> grant all on *.* to 'check'@'localhost' identified by '123';
Query OK, 0 rows affected (0.00 sec)

mysql监控的内容主要有

• 主从的状态 (得先配置主从 在下面)

• 流量检测 发送，接受常规操作 增删改查

• 某个库、某个表的大小

• tps(每秒查询处理的事务数）qps(每秒能处理多少次请求数)

[root@localhost ~]# mkdir /etc/zabbix/scipts
[root@localhost ~]# cd /etc/zabbix/scipts/
[root@localhost scipts]# vim mysql.sh
#!/bin/bash
mysql="mysql -ucheck -p123"
case $1 in
# mysql主从状态
slave_status)
 $mysql -e "show slave status\G" |grep "Yes" |wc -l
;;
# mysql流量 接受
Bytes_received)
 mysqladmin extended-status |grep "Bytes_received" |awk '{print $4}'
;;
# mysql流量 发送
Bytes_sent)
 mysqladmin extended-status |grep "Bytes_sent" |awk '{print $4}'
;;
# mysql常规操作 增
Com_insert)
 mysqladmin extended-status |grep -w "Com_insert" |awk '{print $4}'
;;
# mysql常规操作 删
Com_delete)
 mysqladmin extended-status |grep -w "Com_delete" |awk '{print $4}'
;;
# mysql常规操作 改
Com_update)
 mysqladmin extended-status |grep -w "Com_update" |awk '{print $4}'
;;
# mysql常规操作 查
Com_select)
 mysqladmin extended-status |grep -w "Com_select" |awk '{print $4}'
;;
# mysql tps
tps)
 mysqladmin status |awk '{print $6/$2}'
;;
# mysql qps=(rollback+commit)/uptime
qps)
 rollback=$(mysqladmin extended-status |grep -w "Com_rollback" |awk '{print $4}')
 commit=$(mysqladmin extended-status |grep -w "Com_commit" |awk '{print $4}')
 uptime=$(mysqladmin status |awk '{print $2}')
 count=$[$rollback+$commit]
 echo "$count $uptime" > /tmp/a.txt
 cat /tmp/a.txt |awk '{print $1/$2}'
;;
# 库大小 我们这里拿mysql库举例
db)
 $mysql -e "select sum(data_length) from information_schema.tables where table_schema='mysql'" |sed -n '2p'
;;
# 表大小 我们这里拿mysql下面的user表举例
tb)
 $mysql -e "select sum(data_length) from information_schema.tables where table_schema='mysql' and table_name='user'" |sed -n '2p'
;;
esac

3.自定义键值key 重启zabbix-agent

[root@localhost scipts]# cd /etc/zabbix/zabbix_agentd.d/
[root@localhost zabbix_agentd.d]# vim mysql.conf
UserParameter=mysql[*],/etc/zabbix/scipts/mysql.sh $1
[root@localhost zabbix_agentd.d]# systemctl restart zabbix-agent

4.在zabbix-server测试 先安装zabbix-get

[root@localhost ~]# yum -y install zabbix-get

[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[slave_status]
2
[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[Bytes_received]
850970
[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[Bytes_sent]
224906
[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[Com_insert]
3001
[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[Com_delete]
135
[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[Com_update]
128
[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[Com_select]
19
[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[qps]
0.864842
[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[tps]
1.92936
[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[db]
555118
[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[tb]
420

报错处理

[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[slave_status]
sh: /etc/zabbix/scipts/mysql.sh: 权限不够

脚本执行权限不够 去zabbix-agent 加权限
[root@localhost zabbix_agentd.d]# chmod +x /etc/zabbix/scipts/mysql.sh

[root@localhost ~]# zabbix_get -s 192.168.27.137 -k mysql[slave_status]
ERROR 1227 (42000) at line 1: Access denied; you need (at least one of) the SUPER,REPLICATION CLIENT privilege(s) for this operation

是因为用户没有权限查看 去zabbix-agent 授权个用户在脚本里面加上
[root@localhost ~]# mysql
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 33
Server version: 5.5.65-MariaDB MariaDB Server

Copyright (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)]> grant all on *.* to 'check'@'localhost' identified by '123';
Query OK, 0 rows affected (0.00 sec)

[root@localhost scipts]# vim mysql.sh
#!/bin/bash
mysql="mysql -ucheck -p123"
case $1 in
# mysql主从状态
slave_status)
 $mysql -e "show slave status\G" |grep "Yes" |wc -l
;;

zabbix页面上添加监控项和图形

查看mysql流量数据

查看mysql qps tps

查看mysql主从状态

查看mysql常规操作

查看mysql库表大小

mysql主从配置

一.zabbix-server端

[root@localhost ~]# vim /etc/my.cnf

[root@localhost ~]# systemctl restart mariadb
[root@localhost ~]# mysql
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 7
Server version: 5.5.65-MariaDB MariaDB Server

Copyright (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 master status;
+------------------+----------+--------------+------------------+
| File  | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 | 175170 |  |   |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
MariaDB [(none)]> grant all on *.* to 'tom'@'％' identified by '123';
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)

二.zabbix-agent端

[root@localhost ~]# vim /etc/my.cnf

[root@localhost ~]# systemctl restart mariadb
[root@localhost ~]# mysql
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 2
Server version: 5.5.65-MariaDB MariaDB Server

Copyright (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)]> change master to
-> master_host='192.168.27.136',
-> master_user='tom',
-> master_password='123',
-> master_log_file='mysql-bin.000001',
-> master_log_pos=175170;
Query OK, 0 rows affected (0.01 sec)

MariaDB [(none)]> start slave;
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> show slave status \G;
*************************** 1. row ***************************
 Slave_IO_State: Waiting for master to send event
  Master_Host: 192.168.27.136
  Master_User: tom
  Master_Port: 3306
 Connect_Retry: 60
 Master_Log_File: mysql-bin.000001
 Read_Master_Log_Pos: 175170
 Relay_Log_File: mysql-relay.000004
 Relay_Log_Pos: 529
Relay_Master_Log_File: mysql-bin.000001
 Slave_IO_Running: Yes
 Slave_SQL_Running: No
 Replicate_Do_DB:
 Replicate_Ignore_DB:
 Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
  Last_Errno: 1146
  Last_Error: Error 'Table 'zabbix.history_uint' doesn't exist' on query. Default database: 'zabbix'. Query: 'insert into history_uint (itemid,clock,ns,value) values (23287,1602301747,810415730,1)'
  Skip_Counter: 0
 Exec_Master_Log_Pos: 173424
 Relay_Log_Space: 2565
 Until_Condition: None
 Until_Log_File:
 Until_Log_Pos: 0
 Master_SSL_Allowed: No
 Master_SSL_CA_File:
 Master_SSL_CA_Path:
 Master_SSL_Cert:
 Master_SSL_Cipher:
 Master_SSL_Key:
Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
 Last_IO_Errno: 0
 Last_IO_Error:
 Last_SQL_Errno: 1146
 Last_SQL_Error: Error 'Table 'zabbix.history_uint' doesn't exist' on query. Default database: 'zabbix'. Query: 'insert into history_uint (itemid,clock,ns,value) values (23287,1602301747,810415730,1)'
Replicate_Ignore_Server_Ids:
 Master_Server_Id: 1
1 row in set (0.00 sec)

ERROR: No query specified

报错处理

[root@localhost ~]# vim /etc/my.cnf

[root@localhost ~]# systemctl restart mariadb
[root@localhost ~]# mysql
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 4
Server version: 5.5.65-MariaDB MariaDB Server

Copyright (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 slave status \G;
*************************** 1. row ***************************
 Slave_IO_State: Waiting for master to send event
  Master_Host: 192.168.27.136
  Master_User: tom
  Master_Port: 3306
 Connect_Retry: 60
 Master_Log_File: mysql-bin.000001
 Read_Master_Log_Pos: 199126
 Relay_Log_File: mysql-relay.000006
 Relay_Log_Pos: 3950
Relay_Master_Log_File: mysql-bin.000001
 Slave_IO_Running: Yes
 Slave_SQL_Running: Yes
 Replicate_Do_DB:
 Replicate_Ignore_DB:
 Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
  Last_Errno: 0
  Last_Error:
  Skip_Counter: 0
 Exec_Master_Log_Pos: 199126
 Relay_Log_Space: 4240
 Until_Condition: None
 Until_Log_File:
 Until_Log_Pos: 0
 Master_SSL_Allowed: No
 Master_SSL_CA_File:
 Master_SSL_CA_Path:
 Master_SSL_Cert:
 Master_SSL_Cipher:
 Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
 Last_IO_Errno: 0
 Last_IO_Error:
 Last_SQL_Errno: 0
 Last_SQL_Error:
Replicate_Ignore_Server_Ids:
 Master_Server_Id: 1
1 row in set (0.00 sec)

来源：https://blog.csdn.net/Q274948451/article/details/108993491