A quick guide to CVMFS
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Revision as of 11:16, 1 May 2014 by Tom Whyntie a4af2b64d8 (Talk | contribs)
Contents
Deploying software with CVMFS
For more information about CVMFS at RAL, click here.
Overview of the process
- Prepare your working area
- Prepare your software
- Upload your software to the RAL CVMFS repository and deploy it
- Wait a bit...
- Run your CVMFS-powered jobs
A trivial example
Log in to your machine of choice and create a new working area.
$ ssh -Y whyntie@heppc402 whyntie@heppc402's password: # enter your password here $ mkdir cvmfstests $ cd cvmfstests $ mkdir helloworld $ cd helloworld $ pwd /users/whyntie/cvmfstests/helloworld
Create a new directory that will form the basis of your CVMFS tarball.
$ mkdir hello-world_001-00-00 $ cd hello-world_001-00-00 $ pwd /users/whyntie/cvmfstests/helloworld/hello-world_001-00-00
Create three files in this directory:
-
hello-world.sh
- the "software"; -
run.sh
- the script that runs the software; -
README.md
- for your notes, ideally in the MarkDown format.
$ cat hello-world.sh #!/bin/bash # #============================================================================= # The GridPP CVMFS Hello World! Script #============================================================================= # # Usage: . hello-world.sh [whoever you want to greet] # echo 'Hello' $1'!' $ $ $ cat run.sh #!/bin/bash # #============================================================================= # The GridPP CVMFS Hello World! run script #============================================================================= # # Usage: . run.sh [full path of the hello-world.sh script] # # Note that for grid jobs (or clusters with CVMFS enabled) this will be # the CVMFS directory. # $1/hello-world.sh World $ $ $ cat README.md My CVMFS Test Notes =================== You're keeping detailed notes, right? Good good.
Now compress these files into a tarball.
$ cd ../ $ tar -cvf hello-world_001-00-00.tar hello-world_001-00-00 $ ls hello-world_001-00-00 hello-world_001-00-00.tar
Now upload the tarball to the RAL CVMFS repository. You will need your grid certificate installed in your browser in order to access (and be identified).
$ firefox https://cvmfs-upload01.gridpp.rl.ac.uk &
After confirming certificate and security settings, you should be presented with a page like this:
(Note: this is from the CERN@school VO, which has already had software uploaded. Your page should be blank...)