zabbix mysql 平台_zabbix监控mysql
数据库做为生产环境中最重要的一环，那么它的状态必然是最值得关心的。特别是主从复制，为了保持数据的一致性，监控mysql的主从复制状态也是必不可少的。
接下来让我们一起对mysql数据库主从复制进行监控
部署系统及环境
主机名
IP
角色
master
192.168.8.21
zabbix server
node1
192.168.8.22
mysql master
node2
192.168.8.23
mysql slave
#系统及部署环境
[root@master ~]#cat /etc/redhat-release
CentOS Linux release 7.6.1810 (Core)
#关闭selinux和防火墙
[root@master ~]#setenforce 0
[root@master ~]#systemctl stop firewalld
配置mysql master数据库
[root@node1 ~]#yum install mariadb-server -y
[root@node1 ~]#vim /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0
#加入以下三行
skip_name_resolve
log_bin
server_id=1
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
!includedir /etc/my.cnf.d
systemctl start mariadb
mysql
MariaDB [(none)]> show master logs;
+--------------------+-----------+
| Log_name | File_size |
+--------------------+-----------+
| mariadb-bin.000001 | 254 |
+--------------------+-----------+
3 rows in set (0.00 sec)
MariaDB [(none)]> GRANT REPLICATION SLAVE,REPLICATION CLIENT ON *.* TO 'zabbix_mysql'@'192.168.8.%' IDENTIFIED BY '123456';
配置mysql slave数据库
[root@node2 ~]#yum install mariadb-server -y
[root@node2 ~]#vim /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
#加入以下三行
skip_name_resolve
server_id=2
read_only
symbolic-links=0
[mysqld_safe]
log-error=/var/log/mariadb/mariadb.log
pid-file=/var/run/mariadb/mariadb.pid
!includedir /etc/my.cnf.d
[root@node2 ~]#systemctl start mariadb
两个数据库配置为mysql主从服务器
[root@node2 ~]#mysql
MariaDB [(none)]> CHANGE MASTER TO
-> MASTER_HOST='192.168.8.22',
-> MASTER_USER='zabbix_mysql',
-> MASTER_PASSWORD='123456',
-> MASTER_PORT=3306,
-> MASTER_LOG_FILE='mariadb-bin.000001',
-> MASTER_LOG_POS=254;
Query OK, 0 rows affected (0.00 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: 192.168.8.22
Master_User: zabbix_mysql
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mariadb-bin.000001
Read_Master_Log_Pos: 254
Relay_Log_File: mariadb-relay-bin.000010
Relay_Log_Pos: 531
Relay_Master_Log_File: mariadb-bin.000004
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: 254
Relay_Log_Space: 1113
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
配置mysql从服务器端的zabbix-agent
[root@node2 ~]#yum install zabbix-agent -y
[root@node2 ~]#vim /etc/zabbix/zabbix_agentd.conf
#主动监控ip地址
98：Server=192.168.8.21
#被动监控ip地址
139：ServerActive=192.168.8.21
#本机ip地址，也可写主机名
150： Hostname=192.168.8.23
[root@node2 ~]#systemctl start zabbix-agent
[root@node2 ~]#systemctl enable zabbix-agen
在web界面添加监控主机
查看主机是否添加成功
编写主从复制监控脚本
[root@node2 ~]#vim /etc/zabbix/zabbix_agentd.d/mysql_status.sh
#!/bin/bash
mysql_io_status=`mysql -uroot -hlocalhost -e "show slave status\G;" | grep "Slave_IO_Running" | awk '{print $2}'`
mysql_sql_status=`mysql -uroot -hlocalhost -e "show slave status\G;" | grep "Slave_SQL_Running" | awk '{print $2}'`
mysql_timeout=`mysql -uroot -hlocalhost -e "show slave status\G;" | grep "Seconds_Behind_Master" | awk '{print $2}'`
case $1 in
status)
if [ ${mysql_io_status} == "Yes" -a ${mysql_sql_status} == "Yes" ]
then
echo 50
else
echo 100
fi
;;
timeout)
if [ ${mysql_timeout} == "NULL" ]
then
echo 10000
else
echo ${mysql_timeout}
fi
;;
esac
[root@node2 ~]#chown zabbix.zabbix /etc/zabbix/zabbix_agentd.d/mysql_status.sh
更改zabbix-agent配置文件，并重启
[root@node2 ~]#vim /etc/zabbix/zabbix_agentd.conf
287：nsafeUserParameters=1
297：UserParameter=mysql.status[*],/etc/zabbix/zabbix_agentd.d/mysql_status.sh $1 $2
[root@node2 ~]#systemctl restart zabbix-agent
zabbix-server端进行测试，查看是否能够检测到数据
[root@master ~]#zabbix_get -s 192.168.8.23 -k "mysql.status[status]"
50
[root@master ~]#zabbix_get -s 192.168.8.23 -k "mysql.status[timeout]"
0
在web界面添加监控主从复制监控
添加监控模板
添加监控项
添加触发器
添加图形
监控主机关联模板
查看监控数据
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