RBWMSMonitoringTool < LCG

LCG Web>LCGGridDeployment>LCGProductionServices>InstallationNodeWithQuattor>RBWMSMonitoringTool (2007-02-16, YvanCalas) (raw view)

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---+++ RB/WMS Monitoring Tool

In the following, I assume that:

   * %BLUE%lxb2007%ENDCOLOR% is a UI, and a HTTP server is running on it.
   * %BLUE%rb101%ENDCOLOR% is a gLite WMS or a LCG RB node.

---++++ Content of the tarball Monitoring.tar.gz

The [[%ATTACHURL%/Monitoring.tar.gz][tarball]] must be installed on your HTTP server/UI (lxb2007 in this example). It contains:

   * _~/Monitoring/bin_: contains the bash script monitoring.sh executed to generate the HTML file containing the tables for the WMS and the gLite WMSLB, and the figures.

   * _~/Monitoring/cert_: contains the certificate and private key files (ie. hostcert.pem and hostkey.pem) for the host running the monitoring.sh script.

   * _~/Monitoring/data_: contains the data files collected from the gLite WMS and LCG RBs nodes. It also contains the gnuplot files generated during the execution of the monitoring.sh script.

   * _~/Monitoring/html_: contains the html files generated during the execution of the monitoring.sh script.

   * _~/Monitoring/images_: contains the images generated by gnuplot.

   * _~/Monitoring/sensors_: contains 3 files:
      * _monitoring_: it is the definition of a cron job which must be put in /etc/cron.d on the gLite WMSLB or LCG RB host. 
      * _monitoring.sh_: This file must be put in the directory /root/Monitoring on the gLite WMSLB or LCG RB host.
      * _jobstreated.sh_: This file must be put in the directory /root/Monitoring on the gLite WMSLB or LCG RB host.

---++++ Configuration of the gLite WMS / LCG RBs nodes

* File _/opt/edg/etc/grid-mapfile-local_ must contain the DN of the machine running the monitoring.sh (eg. "/C=CH/O=CERN/OU=GRID/CN=host/lxb2007.cern.ch" .dteam). The grid-mapfile must be regenerated as well:
<verbatim>
                /opt/glite/yaim/scripts/run_function site-info.def config_mkgridmap
</verbatim>

This will allow the UI to do a globus-url-copy on all your gLite WMS / LCG RBs nodes.

---++++ Configuration of the HTTP server / UI node

   * Create directory /var/www/html/monitoring/ on the HTTP server (check the configuration of your server).

   * I put the content of the tarball in a local home directory (/home/yvan in my case). But it can be in /root as well...
   * I assume that user yvan can copy files in directory /var/www/html/monitoring. Modify file _/etc/sudoers_ by adding the following line:  

<verbatim>
                yvan    ALL=(ALL)       NOPASSWD: ALL
</verbatim> 

   * Edit file _~/Monitoring/bin/monitoring.sh_ and put the name of your own machines  (cf variables list_RB and list_WMS). You can also put some comments for these names (see section "Define some string constants at the beginning" in the code).

* You can configure a cron job to execute the monitoring.sh script on the UI. For the time being, I start the script with the following command:

<verbatim>
                cd ~/Monitoring/bin
                nohup ./monitoring.sh &
</verbatim>

There is a 'sleep 7m' in this script, so this script is awaken every 7mn. If you want to make a cron job, you must remove this line...

---++++ Contact

For more informations, please contact Yvan.Calas@cern.ch

-- Main.YvanCalas - 16 Feb 2007

Topic revision: r1 - 2007-02-16 - YvanCalas

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