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linux里nagios pnp4nagios 图形监控 mysql

发布时间:2022-06-16 14:19 所属栏目:48 来源:互联网
导读:下文为各位介绍一个linux中nagios pnp4nagios 图形监控 mysql的教程希望这篇文章可以帮助到各位哦,nagios图形界面还是比较麻烦的,下面以mysql为例来说一下,监控mysql的插件比较多,在这里了解方法,而不是死搬硬套. 一,安装pnp4nagios [root@localhost object
  下文为各位介绍一个linux中nagios pnp4nagios 图形监控 mysql的教程希望这篇文章可以帮助到各位哦,nagios图形界面还是比较麻烦的,下面以mysql为例来说一下,监控mysql的插件比较多,在这里了解方法,而不是死搬硬套.
 
  一,安装pnp4nagios
 
  [root@localhost objects]# yum install pnp4nagios rrdtool  
 
  如果找不到包换epel源,博客里面有搜一下,关于nagios的安装,请参考:nagios 安装配置,详解.
 
  二,配置nagios
 
  1,修改nagios.cfg
 
  [root@localhost objects]# vim /etc/nagios/nagios.cfg    //修改以下内容   
  process_performance_data=1                             //由0改为1   
  host_perfdata_command=process-host-perfdata            //前面的注释拿掉   
  service_perfdata_command=process-service-perfdata      //注释拿掉   
  enable_environment_macros=1                            //如果有注释拿掉  
  2,修改commands.cfg
 
  注释掉原有对process-host-perfdata和process-service-perfdata,重新定义
 
  [root@localhost objects]# vim /etc/nagios/objects/commands.cfg   
     
  define command {   
         command_name    process-service-perfdata   
         command_line    /usr/bin/perl /usr/libexec/pnp4nagios/process_perfdata.pl   
  }   
     
  define command {   
         command_name    process-host-perfdata   
         command_line    /usr/bin/perl /usr/libexec/pnp4nagios/process_perfdata.pl -d HOSTPERFDATA   
  }  
  3、修改配置文件templates.cfg,添加以下内容:
 
  [root@localhost objects]# vim /etc/nagios/objects/templates.cfg    
     
  define host {   
          name       hosts-pnp   
          register   0   
          action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_   
          process_perf_data               1   
  }   
  define service {   
          name       srv-pnp   
          register   0   
          action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$   
          process_perf_data               1   
  }
  4,修改服务器配置文件localhost.cfg
 
  [root@localhost objects]# vim /etc/nagios/objects/localhost.cfg   
     
  define host{   
          use                     linux-server,hosts-pnp   
          host_name               localhost   
          alias                   localhost   
          address                 127.0.0.1   
          }   //phpfensi.com
     
  define service{   
          use                             local-service,srv-pnp   
          host_name                       localhost   
          service_description             PING   
          check_command                   check_ping!100.0,20%!500.0,60%   
          }   
  上面只是例举了一个,你可以都加一下.
 
  三,pnp4nagios配置
 
  在网上好多关于pnp4nagios的文章,都是要把mv misccommands.cfg-sample misccommands.cfg 生成配置文件,我是yum安装的,安装目录下根本没有sample这样的东西.
 
  [root@localhost objects]# tree /etc/pnp4nagios/   
  /etc/pnp4nagios/   
  ├── background.pdf   
  ├── check_commands   
  │   ├── check_all_local_disks.cfg   
  │   ├── check_nrpe.cfg   
  │   └── check_nwstat.cfg   
  ├── config.php   
  ├── misccommands.cfg   
  ├── nagios.cfg   
  ├── npcd.cfg   
  ├── pages   
  │   └── web_traffic.cfg   
  ├── pnp4nagios_release   
  ├── process_perfdata.cfg   
  └── rra.cfg   
  所在我根本没有配置任何东西.
 
  四,重启nagios,启动npcd
 
  [root@localhost pnp4nagios]# /etc/init.d/npcd start   
  [root@localhost pnp4nagios]# /etc/init.d/nagios restart
  五,nginx配置
 
  配置nginx的时候,配置挺头痛的,nagios的根目录是有php的,pnp4nagios是放在nagios的根目录下面,pnp4nagios也是php的,配置不好容易错乱的.
 
  server   
  {   
      listen       80;   
      server_name  nagios.xxxx.com;   
      index  index.php;   
      root   /usr/share/nagios/html;   
     
      location ~ .*\.(php|php5)?$ {        //nagios根目录的php   
          fastcgi_pass  127.0.0.1:9000;   
          fastcgi_index index.php;   
          include fastcgi.conf;   
      }   
     
      location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ {   //nagios的图片重写   
          rewrite ^/nagios/images/(.*) /images/$1 break;   
          rewrite ^/pnp4nagios/index.php/(.*) /pnp4nagios/$1 break;   
          expires     30d;   
      }   
     
      location ~ .*\.(js|css)?$ {       //nagios的js,css重写   
          rewrite ^/nagios/stylesheets/(.*) /stylesheets/$1 break;   
          rewrite ^/nagios/js/(.*) /js/$1 break;   
          rewrite ^/pnp4nagios/index.php/(.*) /pnp4nagios/$1 break;   
          expires     1h;   
      }   
     
      location ~ .*\.cgi$ {             //nagios的主程序是perl的,perl的cgi重写   
          root /usr/lib64/nagios/cgi-bin;   
          rewrite ^/nagios/cgi-bin/(.*)\.cgi /$1.cgi break;   
          fastcgi_pass   127.0.0.1:9001;   
          fastcgi_index index.cgi;   
          include fastcgi.conf;   
      }   
      location ~ ^(/pnp4nagios.*\.php)(.*)$ {       //pnp4nagios的php重写   
          rewrite ^/pnp4nagios/index.php/index.php/(.*)$ /pnp4nagios/index.php/$1; break;   
          fastcgi_pass   127.0.0.1:9000;   
          fastcgi_index index.php;   
          include fastcgi.conf;   
      }   
     
  }
  在这里有一个问题就是http://nagios.xxxx.com/pnp4nagios/index.php/index.php/graph?host=localhost&srv=PING在这里有二个index.php,这个是php的程序加上去的,我并没有改,同一个页面有二种链接.
 
  由nagios的监控页面,跳转到pnp4nagios监控页面的连接是
 
  http://nagios.xxxx.com/pnp4nagios/index.php/graph?host=localhost&srv=PING
 
  点php4nagios监控页面中的连接然后就会多加一个index.php,http://nagios.xxxx.com/pnp4nagios/index.php/index.php/graph?host=localhost&srv=PING
 
  这也是上面我为什么要加这一句rewrite ^/pnp4nagios/index.php/index.php/(.*)$ /pnp4nagios/index.php/$1;break;的原因.
 
  二,安装perl mysql扩展
 
  # yum install perl-Class-DBI-mysql
 
  三,check_mysqld.php和check_mysqld.pl
 
  1,下载
 
  http://exchange.nagios.org/components/com_mtree/attachment.php?link_id=174&cf_id=30
  http://exchange.nagios.org/components/com_mtree/attachment.php?link_id=174&cf_id=36
  2,修改check_mysqld.php和check_mysqld.pl,本机是64位,根本没有/usr/lib/nagios,所以要把文件中的lib改成lib64.
 
  3,copy和修改文件权限
 
  # cp check_mysqld.pl /usr/lib64/nagios/plugins   
     
  # chmod 755 /usr/lib64/nagios/plugins/check_mysqld.pl   
  # chgrp nagios /usr/lib64/nagios/plugins/check_mysqld.pl   
     
  # cp check_mysqld.php /usr/share/nagios/html/pnp4nagios/templates.dist  
  四,nagios配置
 
  1,修改command.cfg
 
  # vim /etc/nagios/objects/commands.cfg   
     
  define command{   
   command_name check_mysqld   
   command_line $USER1$/check_mysqld.pl -H $HOSTADDRESS$ -u nagios -p $USER7$ -a uptime,threads_connected,questions,slow_queries,open_tables -w ',,,,' -c ',,,,' -A $USER21$   
  }  
  2,修改resource.cfg
 
  # vim /etc/nagios/objects/resource.cfg    
     
  $USER7$=nagios   
  $USER21$='com_select,com_update,com_insert,com_insert_select,  
  com_commit,com_delete,com_rollback,aborted_clients,  
  aborted_connects,binlog_cache_disk_use,binlog_cache_use,  
  bytes_received,bytes_sent,connections,created_tmp_disk_tables,  
  created_tmp_files,created_tmp_tables,delayed_errors,  
  delayed_insert_threads,delayed_writes,handler_update,handler_write,  
  handler_delete,handler_read_first,handler_read_key,  
  handler_read_next,handler_read_prev,handler_read_rnd,  
  handler_read_rnd_next,key_blocks_not_flushed,  
  key_blocks_unused,key_blocks_used,key_read_requests,key_reads,  
  key_write_requests,key_writes,max_used_connections,  
  not_flushed_delayed_rows,open_files,open_streams,open_tables,  
  opened_tables,prepared_stmt_count,qcache_free_blocks,  
  qcache_free_memory,qcache_hits,qcache_inserts,  
  qcache_lowmem_prunes,qcache_not_cached,  
  qcache_queries_in_cache,qcache_total_blocks,questions,  
  select_full_join,select_rangle_check,slow_launch_threads,  
  slow_queries,table_locks_immediate,table_locks_waited,  
  threads_cached,threads_connected,threads_created,  
  threads_running'  
  在这里要注意,$USER21$后面的内容要在一行.
 
  3,修改localhost.cfg
 
  # vim /etc/nagios/objects/localhost.cfg    
     
  define service {   
   use local-service,srv-pnp //srv-pnp换成你自定义的   
   host_name localhost   
   service_description MYSQLD   
   check_command check_mysqld!localhost!nagios!nagios   
  }   
  4,pnp4nagios中增加check_mysqld.cfg
  # vim /etc/pnp4nagios/check_commands/check_mysqld.cfg   
     
  DATATYPE = COUNTER   
  五,重启nagios
 
  # /etc/init.d/npcd restart   
  # /etc/init.d/nrpe restart   
  # /etc/init.d/nagios restart。
 

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