zabbix 监控mysql的方法
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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)