Collecting ganglia monitoring records

Preparation steps:

1. Login as root and create a regular user account on host mon-lcg.projects.cscs.ch
2. Login as user and put a valid certificate in your home dir.
   If creating on a machine anew start with a grid-cert-request command and follow all the instructions
   If bringing a certificate (usercert.pem and userkey.pem files) from another machine:
   % mkdir .globus
   % chmod g-w .globus
   % cp userkey.pem usercert.pem .globus/
   % chmod 600 .globus/userkey.pem
   
3. Collect certificate information
   % grid-cert-info -subject
   % grid-cert-info -issuer
4. Send the output from above commands to the person who deals with registering users on a remote machine. For Phoenix cluster info the points of contact are Kerstin Voss kerstinv@upb.de and Georg Birkenheuer birke@upb.de. After the confirmation that the user is added o the grid-map file can collect and transmit the data.

Executiion steps:

1. Initialize certificate proxy
   % grid-proxy-init
2. Run script to collect the data.
   % ./GetDump
3. Transfer the resulting YYYYMMDD-HHmm.tar.gz file to the remote machine
   % globus-url-copy file:///home/nadya/20070213-1108.tar.gz gsiftp://arminius-grid.uni-paderborn.de/tmp/20070213-1108.tar.gz

Script GetDumps provides for collection of the ganglia records. The script assumes the following (all can be changed):

• it is run on the host mon-lcg.projects.cscs.ch where ganglia records are stored
• ganglia's DB location is /var/lib/ganglia/rrds/. Two current subdirectories that hold records for the nodes are PHOENIX-services/ and PHOENIX-workers/
• repeated running of the script will create another gzipped tar file with dumps inside.

-- NadyaWilliams - 13 Feb 2007