• 1.linux-node2節點安裝數據庫

[root@linux-node2 ~]# yum install -y mariadb-server [root@linux-node2 ~]# systemctl start mariadb [root@linux-node2 ~]# netstat -tulnp |grep 3306 tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 41299/mysqld

• 2.Zabbix添加數據庫主機監控

被動模式對Hostname沒要求，但主動模式必須與主機Hostname一致。
"Configuration"-->"Host"（填入主機信息）-->"Templates"（鏈接MySQL模板）
如圖：

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創建成功后，可以查看到MySQL相應的監控信息，數據庫的增改刪查，如圖：

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命令行進行查看獲取的信息： [root@linux-node1 ~]# zabbix_get -s linux-node2 -k mysql.status[Com_begin] 0 [root@linux-node1 ~]# zabbix_get -s linux-node2 -k mysql.status[Slow_queries] 0 數據庫模板監控配置主要來自linux-node2節點：/etc/zabbix/zabbix_agentd.d/userparameter_mysql.conf 的配置 [root@linux-node2 ~]# vim /etc/zabbix/zabbix_agentd.d/userparameter_mysql.conf # For all the following commands HOME should be set to the directory that has .my.cnf file with password information.# Flexible parameter to grab global variables. On the frontend side, use keys like mysql.status[Com_insert]. # Key syntax is mysql.status[variable]. UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';" | HOME=/var/lib/zabbix mysql -N | awk '{print $$2}' #mysql的狀態獲取# Flexible parameter to determine database or table size. On the frontend side, use keys like mysql.size[zabbix,history,data]. # Key syntax is mysql.size[<database>,<table>,<type>]. # Database may be a database name or "all". Default is "all". # Table may be a table name or "all". Default is "all". # Type may be "data", "index", "free" or "both". Both is a sum of data and index. Default is "both". # Database is mandatory if a table is specified. Type may be specified always. # Returns value in bytes. # 'sum' on data_length or index_length alone needed when we are getting this information for whole database instead of a single table UserParameter=mysql.size[*],bash -c 'echo "select sum($(case "$3" in both|"") echo "data_length+index_length";; data|index) echo "$3_length";; free) echo "data_free";; esac)) from information_schema.tables$([[ "$1" = "all" || ! "$1" ]] || echo " where table_schema=\"$1\"")$([[ "$2" = "all" || ! "$2" ]] || echo "and table_name=\"$2\"");" | HOME=/var/lib/zabbix mysql -N'UserParameter=mysql.ping,HOME=/var/lib/zabbix mysqladmin ping | grep -c alive #mysql的存活獲取 UserParameter=mysql.version,mysql -V #mysql的版本獲取

• 3.帶密碼對MySQL監控

以上對數據庫的監控，都是沒有密碼直接獲取值，這是不合理的，那么需要如何添加密碼進行獲取監控數據呢？

（1）先對數據庫進行授權和密碼，通過zabbix用戶進行獲取數據，此處的授權由于試驗，就授權了全部權限，正式生產時不能這樣設置。[root@linux-node2 ~]# mysql Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 711 Server version: 5.5.56-MariaDB MariaDB ServerCopyright (c) 2000, 2017, 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 zabbix@localhost identified by "zabbix"; Query OK, 0 rows affected (0.00 sec)MariaDB [(none)]> flush privileges; Query OK, 0 rows affected (0.00 sec)MariaDB [(none)]> quit; Bye（2）修改監控配置，添加用戶名密碼 [root@linux-node2 ~]# vim /etc/zabbix/zabbix_agentd.d/userparameter_mysql.conf UserParameter=mysql.status[*],echo "show global status where Variable_name='$1';" | HOME=/var/lib/zabbix mysql -uzabbix -pzabbix -N | awk '{print $$2}' UserParameter=mysql.size[*],bash -c 'echo "select sum($(case "$3" in both|"") echo "data_length+index_length";; data|index) echo "$3_length";; free) echo "data_free";; esac)) from information_schema.tables$([[ "$1" = "all" || ! "$1" ]] || echo " where table_schema=\"$1\"")$([[ "$2" = "all" || ! "$2" ]] || echo "and table_name=\"$2\"");" | HOME=/var/lib/zabbix mysql -N' UserParameter=mysql.ping,HOME=/var/lib/zabbix mysqladmin ping -uzabbix -pzabbix | grep -c alive UserParameter=mysql.version,mysql -V[root@linux-node2 ~]# systemctl restart zabbix-agent

修改完畢后，我們可以看到在Item項都顯示Not supported，如圖：

此時修改一下zabbix對無效監控項的刷新時間，默認是600s，我們改為30s。修改完成后就會變成enabled

"Administration"-->"General"-->右上角選擇"other"-->"Refresh unsupported items (in sec)"改為30

• 4.靈活使用宏變量（Macrros）進行傳參配置用戶名密碼監控

如圖：在主機中配置變量

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（1）修改配置文件： [root@linux-node2 ~]# vim /etc/zabbix/zabbix_agentd.d/userparameter_mysql.conf UserParameter=mysql.status[*],echo "show global status where Variable_name='$3';" | HOME=/var/lib/zabbix mysql -u$1 -p$2 -N | awk '{print $$2}' UserParameter=mysql.ping[*],HOME=/var/lib/zabbix mysqladmin -u$1 -p$2 ping| grep -c alive [root@linux-node2 ~]# systemctl restart zabbix-agent此時，如果未傳入用戶名密碼訪問是被拒絕的： [root@linux-node1 ~]# zabbix_get -s linux-node2 -k mysql.status[Slow_queries] Enter password: ERROR 1045 (28000): Access denied for user 'Slow_queries'@'localhost' (using password: YES) [root@linux-node1 ~]# zabbix_get -s linux-node2 -k mysql.status[zabbix,zabbix,Slow_queries] 0（2）修改模板，模板中的變量值可以不設置，因為在連接模板時進行修改變量，此時會自動覆蓋在模板設置的變量值:

（3）修改模板中的Item：增加傳參的變量{$USER},{PASSWD}

轉載于:https://www.cnblogs.com/linuxk/p/9453038.html

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