Zabbix monitora o fluxo de status mestre-escravo do banco de dados mysql, qps, tps adicionar, excluir, modificar e verificar o tamanho da tabela do banco de dados + análise de erro detalhada

documento de implantação do zabbix

Após o zabbix ser implantado

operação do agente zabbix

1. Para monitorar o mysql, primeiro instale o mysql

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

2. Escreva um script para itens de monitoramento mysql

Autorize um usuário no zabbix-agent primeiro, caso contrário, não haverá permissão durante o teste

[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)

Os principais conteúdos monitorados pelo mysql são

• Status mestre-escravo (você deve primeiro configurar o mestre-escravo abaixo)
• Envio de detecção de fluxo, aceitar
• Operações de rotina adicionar, excluir, modificar e verificar
• O tamanho de uma biblioteca, uma mesa
• tps (o número de transações processadas por consultas por segundo) qps (quantas solicitações podem ser processadas por segundo)

[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. Chave de valor de chave personalizada reinicie o agente zabbix

[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. Instale o zabbix-get primeiro no teste do servidor zabbix

[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

Manipulação de erros

[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
        ;;      

Adicione itens de monitoramento e gráficos na página do zabbix

Dicas como tps qps são números de ponto flutuante (adicionar nota)

Ver dados de tráfego mysql

Ver mysql qps tps

Ver o status do mestre-escravo do mysql

Ver operações de rotina do mysql

Ver o tamanho da tabela do banco de dados mysql

configuração mestre-escravo mysql

1. lado do servidor zabbix

[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)

2. lado do agente zabbix

[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

Manipulação de erros

[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)