PNP4Nagios

開始安裝

必要的套件

yum install gcc perl-Time-HiRes rrdtool-perl make

tar xzf pnp4nagios-0.6.21.tar.gz
cd pnp4nagios-0.6.21
./configure 

NOTE: 

如果 Nagios 的系統帳號與群組不是預設的 nagios，必須加上參數
./configure --with-nagios-user=icinga --with-nagios-group=icinga

如果出現以下訊息，表示 configure 完成

*** Configuration summary for pnp4nagios-0.6.21 03-24-2013 ***

  General Options:
  -------------------------         -------------------
  Nagios user/group:                nagios nagios
  Install directory:                /usr/local/pnp4nagios
  HTML Dir:                         /usr/local/pnp4nagios/share
  Config Dir:                       /usr/local/pnp4nagios/etc
  Location of rrdtool binary:       /usr/bin/rrdtool Version 1.3.8
  RRDs Perl Modules:                FOUND (Version 1.3008)
  RRD Files stored in:              /usr/local/pnp4nagios/var/perfdata
  process_perfdata.pl Logfile:      /usr/local/pnp4nagios/var/perfdata.log
  Perfdata files (NPCD) stored in:  /usr/local/pnp4nagios/var/spool

  Web Interface Options:
  -------------------------         -------------------
  HTML URL:                         http://localhost/pnp4nagios
  Apache Config File:               /etc/httpd/conf.d/pnp4nagios.conf


  Review the options above for accuracy.  If they look okay,
  type 'make all' to compile.

 

開始編譯

make all
make fullinstall 

設定

編輯 /etc/httpd/conf.d/pnp4nagios.conf

...
AuthUserFile /etc/nagios/htpasswd.users <-- 將這行改成與 Nagio 設定相同

... 

瀏覽首頁：http://xxx.xxx.xxx.xxx/pnp4nagios/

如果頁面的內容沒有出現錯誤，將以下檔案作更名

mv /usr/local/pnp4nagios/share/install.php /usr/local/pnp4nagios/share/install.php.xxx

Nagios 設定

編輯 /etc/nagios/nagios.cfg

process_performance_data=1

service_perfdata_command=process-service-perfdata
host_perfdata_command=process-host-perfdata 

編輯 /etc/nagios/objects/commands.cfg

define command {
       command_name    process-host-perfdata
       command_line    /usr/bin/perl /usr/local/pnp4nagios/libexec/process_perfdata.pl -d HO
STPERFDATA
}


define command {
       command_name    process-service-perfdata
       command_line    /usr/bin/perl /usr/local/pnp4nagios/libexec/process_perfdata.pl
}

編輯 /etc/nagios/objects/templates.cfg

• 將 generic-host 與 generic-service 的 process_perf_data 改為 0，否則預設為 1 時，所有的 host 與 服務都會自動啟用這功能

define host {
   name                            generic-host
   ...
   process_perf_data 0
   ...
}

define service {
   name                            generic-service
   ...
   process_perf_data 0
   ...
}

對特定 host 或 service 啟用圖形功能

編輯 /etc/nagios/objects/MES-servers.cfg，在 host 或 service 的設定裡加上 process_perf_data 1

註：MES-server.cfg 是以筆者環境為例

define host {
   use                            generic-host
   host_name                      ap1
   ...
   process_perf_data              1
   action_url                     /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_
   ...
}

define service {
   use                            generic-service
   host_name                      ap1
   service_description            PING 
   ...
   process_perf_data              1
   action_url                     /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$
   ...
}

設定 popup 顯示(optional)

從 pnp4nagios 安裝程式裡複製 status-header.ssi

cp <pnp4nagios 原始程式目錄>/contrib/ssi/status-header.ssi /usr/share/nagios/ssi

NOTE:

此檔不可有執行的權限

/usr/share/nagios/ssi 此目錄會因為 nagios 安裝版本不同有所差異

編輯 /etc/nagios/objects/MES-servers.cfg，改變 action_url

define host {
   use                            generic-host
   host_name                      ap1
   ...
   process_perf_data              1
   action_url                     /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_' class='tips' rel='/pnp4nagios/index.php/popup?host=$HOSTNAME$&srv=_HOST_
   ...
}

define service {
   use                            generic-service
   host_name                      ap1
   service_description            PING 
   ...
   process_perf_data              1
   action_url                     /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$' class='tips' rel='/pnp4nagios/index.php/popup?host=$HOSTNAME$&srv=$SERVICEDESC$
   ...
}

Performance Data 客制化

Performance  Data 格式

label=value[UOM];[warning-range];[critical-range];[min];[max]

HTTP 輸出資訊範例

HTTP OK: HTTP/1.1 200 OK - 46869 bytes in 0.294 second response time | time=0.294561s;;;0 size=46869B;;;0

NOTE:

資訊內容從 | 符號以後的就是 Performance Data