Zabbix and MPM monitoring MySQL

Zabbix and MPM monitoring MySQL

• Environmental description

  A: 192.168.1.190, system CentOS  6.3, deploy Zabbix Server
  B: 192.168.1.191, system CentOS 6.3, deploy Zabbix Agent, MySQL 5.5.29 (MySQL Slave)

•  

  The approximate steps for MPM/Zabbix monitoring MySQL are as follows:

  • Install and deploy Zabbix
  • Download and install MPM (Performance Monitor for MySQL) and its dependent Perl modules
  • Import MPM template
  • Create host group (optional)
  • Creating a host (that is, the database in the MPM agent configuration)
    is worth noting: the Hostname must be the same as the one used in the MPM agent configuration
  • Associate the selected template with the created host
  • Configure MPM agent
  • 将MPM agent”挂钩”到Zabbix agent
    # cat /path_to_zabbix_agent_conf/zabbix_agentd.conf
    UserParameter=FromDual.MySQL.check,/path_to_mpm_agent/FromDualMySQLagent.pl \
    /path_to_mpm_agent_conf/FromDualMySQLagent
  • Restart Zabbix agent

• Install and deploy Zabbix

  Please refer to " Installation and Deployment of Distributed Monitoring System Zabbix 2.06 "  http://www.linuxidc.com/Linux/2013-07/86942.htm

• Note: The following operations are performed on the monitored side.

• MPM download and its dependencies 

  MPM(PERFORMANCE MONITOR FOR MYSQL)依赖的相关Perl模块安装:
   yum install perl-File-Which perl-libwww-perl perl-Digest-SHA1 perl-DBD-MySQL perl-Time-HiRes perl-Crypt-SSLeay
  下载MPM并解压:
  wget -c http://www.shinguz.ch/download/mysql_performance_monitor-latest.tar.gz
  tar zxvf mysql_performance_monitor-latest.tar.gz

• Zabbix Web UI导入MPM模板

  MPM模板:
  tar zxvf mysql_performance_monitor_templates-0.9.1.tar.gz
  cd mysql_performance_monitor_templates-0.9.1/xml

         注意：导入模板前可以先将这些模板保存到windows下，然后在zabbix web界面进行导入。

• 在Zabbix Web UI导入监控所需的模板(“Configuration”->”Templates”->”Import”):
  Template_FromDual.MySQL.mpm.xml (监控mpm agent本身,这个必须导入)
  Template_FromDual.MySQL.server.xml (监控Linux系统跟数据库使用相关的附加项)
  Template_FromDual.MySQL.process.xml (监控各种Linux进程[比如:mysqld,ndbd])
  Template_FromDual.MySQL.mysql.xml (监控MySQL常用状态变量)
  Template_FromDual.MySQL.innodb.xml (监控InnoDB存储引擎状态变量)
  Template_FromDual.MySQL.myisam.xml (监控MyISAM存储引擎状态变量)
  Template_FromDual.MySQL.master.xml (监控MySQL主从复制的Master状态)
  Template_FromDual.MySQL.slave.xml (监控MySQL主从复制的Slave状态)
  MPM其它用途的模板:
  Template_FromDual.MySQL.ndb.xml (监控MySQL Cluster)
  Template_FromDual.MySQL.galera.xml (监控MySQL Galera Cluster)
  Template_FromDual.MySQL.pbxt.xml (监控PBXT存储引擎状态变量)
  Template_FromDual.MySQL.aria.xml (监控Aria存储引擎的状态变量)
  Template_FromDual.MySQL.drbd.xml (监控DRBD设备状态信息)

• 安装MPM和配置MPM Agent的Zabbix Keys

  安装MPM:

  tar zxvf mysql_performance_monitor_agent-0.9.1.tar.gz
  mv mysql_performance_monitor_agent-0.9.1 /usr/local/mysql_performance_monitor-agent
  

  修改FromDualMySQLagent.pl中的zabbix_sender的路径:

  cd /usr/local/mysql_performance_monitor-agent/
  sed -i 's|/usr/local/bin|/usr/local/zabbix/bin/|g' FromDualMySQLagent.pl
  

  将MPM Agent的Keys配置添加到Zabbix Agentd配置文件目录中:

  cd /usr/local/zabbix/etc/zabbix_agentd.conf.d
  vi FromDual_MySQL_monitoring.conf
  # cat FromDual_MySQL_monitoring.conf 
  

  UserParameter=FromDual.MySQL.check,/usr/local/mysql_performance_monitor-agent/FromDualMySQLagent.pl /usr/local/mysql_performance_monitor-agent/etc/FromDualMySQLagent.conf

• MPM Agent配置

  创建MySQL监控用户mpm:

  mysql> create user 'mpm'@'127.0.0.1' identified by '123456';
  mysql> grant process, replication client on *.* to 'mpm'@'127.0.0.1';
  mysql> flush privileges;
  

  配置MPM Agent:

  cd /usr/local/mysql_performance_monitor-agent/etc
  cp FromDualMySQLagent.conf.template FromDualMySQLagent.conf
  mkdir -p /var/log/zabbix
  mkdir -p /var/log/zabbix/cache
  touch /var/log/zabbix/FromDualMySQLagent.log
  chown -R zabbix:zabbix /var/log/zabbix
  chmod o+r /var/run/mysqld/mysqld.pid #这里要根据自己实际情况进行修改
  vi FromDualMySQLagent.conf
  # cat FromDualMySQLagent.conf
  

  [default]
  
  # Type of section:
  # mysqld for a normal MySQL database
  # ndbd   for a MySQL cluster
  Type         = mysqld
  
  # Debug levels are:
  # 1 is logging only errors
  # 2 is logging errors and warnings (this is the default)
  # 3 logs some informations messages as well
  # 4 logs everything (for debugging purposes only)
  
  Debug         = 2
  LogFile       = /var/log/zabbix/FromDualMySQLagent.log
  # Directory where the Cache files should be written to:
  CacheFileBase = /var/log/zabbix/cache/FromDualAgentCache
  
  # If you agent is not located in the same time zone as your server
  # TimeShift = +0.0
  
  # Information for MySQL connections: 下面的这几项需要修改
  Username     = mpm
  Password     = 123456
  MysqlHost    = 127.0.0.1
  MysqlPort    = 3306
  
  # Zabbix Server IP address 需要修改
  ZabbixServer = 192.168.1.190
  
  # If section is disabled
  Disabled     = false
  
  # Possible modules for databases are:
  # process mysql myisam aria innodb pbxt ndb master slave drbd galera memcache
  # Possible modules for servers are:
  # mpm server
  # Usual modules are
  Modules      = process mysql myisam innodb
  
  # Special parameter which is used for module ndb and process
  ClusterLog   = /var/lib/mysql-cluster/ndb_1_cluster.log
  # MySQL Pid file, need read permission for zabbix user
  PidFile      = /var/run/mysqld/mysqld.pid #这里也需要修改
  
  [db_server]
  
  Type         = mysqld
  Modules      = mpm server
  
  
  # All MySQL databases here
  # Try to avoid section names with spaces!
  
  [192.168.1.191_MySQL_5.5.29]   # This MUST match Hostname in Zabbix! 注意：该行及以下的几行需要取消注释
  Type         = mysqld
  MysqlPort    = 3306
  Modules      = process mysql myisam innodb slave
  PidFile      = /var/run/mysqld/mysqld.pid
  Debug        = 1
  

  注:这里监控的MySQL Server是MySQL主从复制的中的Slave机器.

 

查看mpm-agent的日志会报错，一个是mysql.pid文件读取权限的问题，这个可以自行解决。还有一个就是连接zabbix server的问题：解决方法如下：

安装MySQL MPM插件时，在zabbix web前端点击Monitoring->Latest data查看监控，没有生成监控数据
查看MPM的日志，发现下面报错
[root@localhost etc]# tail -f /var/log/zabbix/FromDualMySQLagent.log
15989:2017-04-10 07:59:44.725 - INFO: FromDual Performance Monitor for MySQL (0.9.1) run started.
15989:2017-04-10 07:59:44.945 - WARN:       192.168.174.187, 10051, db_server
15989:2017-04-10 07:59:44.945 - WARN:       Connection to zabbix server failed (rc=1305)!
15989:2017-04-10 07:59:46.078 - WARN:       192.168.174.187, 10051, db_server
15989:2017-04-10 07:59:46.078 - WARN:       Connection to zabbix server failed (rc=1305)!

解决方法：
注释掉Zabbix Agent端下面文件中的check语句
[root@localhost etc]# vim /usr/local/mysql_performance_monitor-agent/lib/sendData.pm
#    $rc = &FromDualMySQLagent::checkConnectionToZabbixServer($main::gParameter{'ZabbixServer'}, $main::gParameter{'ZabbixServerPort'}, $main::gParameter{'Hostname'});

之后关闭Agentd服务，删除cache文件夹里面的文件
[root@localhost cache]# cd /var/log/zabbix/cache
[root@localhost cache]# rm -rf *
之后重启Agentd服务