TRIUMF Grid Patch Management
YUMWe use yum (Yellowdog Updater Modified ;-) to install software and apply patches to the systems. The yum repositories are in the /ks/mirror/ tree, and are accessed over NFS. This avoids unnecessary network traffic, and guarantees a stable and accessible patch mirror.
The yum.conf file has 5 repositories:
SL 30x main
The original Scientific Linux (v 30x) distribution, where 30x is the current SL 3 version (as of May 2005 it is 304).
SL 30x errata
patches for this version of Scientific Linux
LCG 2.4.0 Repository
The LCG distribution with version 2.4.0 (as of May 2005)
LCG 2.4.0 Updates Repository
The updates for the LCG Repository
LCG CA Repository
The Certificate Authority RPMs for LCG
Mirror Structure for YUMThe current mirror directory structure for these repositories looks like the following. Note that it mutates as new versions of SL, Fedora Core and/or LCG appear. As of May 2005 the Fedora Core repository is used for the Service Challenge nodes: