Cacti监控MYSQL
---cacti下mysql插件的安装
关于cacti 的安装配置，见之前的博文，本文接上篇cacti 短信报警http://chengchow.blog.51cto.com/1642666/1213367
1.下载插件到/downloads目录
插件见附件
2.解压缩
Cd /downloads
Tar xvf mysql-cacti-templates-1.1.2.tar
3.拷贝mysql插件到scripts目录
Cd /var/www/localhost/htdocs/cacti/
Cp /downloads/mysql-cacti-templates-1.1.2/ss_get_mysql_stats.phpscripts/.
4.修改ss_get_mysql_stats.php
Vi ss_get_mysql_stats.php
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$mysql_user = 'cactiuser'; $mysql_pass = 'cactipass'; …… $cache_dir= '/var/www/localhost/htdocs/cacti/cache'; |
5.创建cach_dir目录，并赋予最大权限
Mkdir cache
Chmod 777 –R cache
Chown –R cactiuser:cactiuser cache
6.赋予cactiuser对数据库的数据采集权限
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mysql -uroot -proot Welcome to the MySQL monitor.Commands end with ; or \g. Your MySQL connection id is 129 Server version: 5.1.62-log Gentoo Linux mysql-5.1.62-r1 Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> grant process, super, replication client on *.* to 'cactiuser'@'localhost' identified by 'cactipass'; Query OK, 0 rows affected (0.00 sec)
mysql> grant process, super, replication client on *.* to 'cactiuser'@'%' identified by 'cactipass'; Query OK, 0 rows affected (0.00 sec)
mysql> \q
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测试：
Mysql –ucactiuser –pcactipass –h localhost
PhpMyadmin下看权限
7.打开IE访问Cacti 网址
8.导入mysql监控模板
Consoleàimport templatesà浏览, 选择刚才解压文件中的
cacti_host_template_x_db_server_ht_0.8.6i.xml，点击import导入
Consoleàgraph templates，我们会看到如下图选项，导入成功。
9.添加一台有Mysql 服务的主机测试，主机需要安装net-snmp服务，添加方法
Console à devices àadd 出现如下界面，添加方法和普通主机一样，唯一的区别是Host Template中选择X DB Server HT（不选也行以后再添加，MYSQL监控表格比较多，以后添加比较麻烦），
然后将这台刚才添加的主机添加到graph tree里面，这样我们就可以去看监控图片了
时间比较短，只能贴张1小时的图片
10.遇到问题
10.1 日志报错
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08/19/2013 11:55:05 PM - CMDPHP: Poller[0] ERROR: A DB Exec Failed!, Error:'1062', SQL:"insert into poller_output (local_data_id, rrd_name, time, output) values (7, 'proc', '2013-08-19 23:55:04', '88')' |
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08/19/2013 11:55:04 PM - CMDPHP: Poller[0] ERROR: A DB Exec Failed!, Error:'1062', SQL:"insert into poller_output (local_data_id, rrd_name, time, output) values (6, 'users', '2013-08-19 23:55:04', '1')' |
解决方法：
chmod 755 –R log rra
chown cactiuser:cactiuser –R log rra
不过做完以后日志的purge权限没了
10.2日志一堆警告
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08/19/2013 11:45:04 PM - CMDPHP: Poller[0] Host[34] Description[MySQLtest01] DS[376] Graphs['MySQLtest01 - InnoDB Buffer Pool Activity'] WARNING: Result from CMD not valid. Partial Result: Can't connect to MyS |
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08/19/2013 11:45:04 PM - CMDPHP: Poller[0] Host[34] Description[MySQLtest01] DS[381] Graphs['MySQLtest01 - MySQL Sorts'] WARNING: Result from CMD not valid. Partial Result: Can't connect to MyS |
其实日志已经说得很明白了，不能连接到MYSQL服务器，可惜我还是找了大半天，原来我的/include/config.inc默认密码是cactiuser，而这里设置的是cactipass，修改一样就可以了