Service Card for CVMFS

CVMFS is a package running on the WNs that needs a squid proxy to cache requests.

Definition

Currently, the host in which the squid for cvmfs is installed is cvmfs.lcg.cscs.ch and is a Sun server with:

• Scientific Linux 6.2 x86_64
• Squid 3.1.10 (squid-3.1.10-1.el6_2.1.x86_64)

Operations

Interesting information like how to deal with the service.

Client tools

Testing

Start/stop procedures

# service squid status
squid (pid  2268) is running...

Failover check

The WNs are configured to query both Squid servers in case of failure:

# cat default.local
#CVMFS_REPOSITORIES=atlas.cern.ch,atlas-condb.cern.ch,cms.cern.ch,lhcb.cern.ch,hone.cern.ch,grid.cern.ch
CVMFS_REPOSITORIES=atlas,atlas-condb,lhcb,hone,cms
CVMFS_HTTP_PROXY="http://cvmfs.lcg.cscs.ch:3128|http://ppcvmfs.lcg.cscs.ch:3128"
CVMFS_CACHE_BASE=/cvmfs_local
CVMFS_QUOTA_LIMIT=30000

Checking logs

Set up

Instructions on how to set up the service, like:

Dependencies (other services, mount points, ...)

Redundancy notes

Installation

Easy:

# yum install squid

Configuration (/etc/squid/squid.conf) is managed by cfengine.

Upgrade

Monitoring

Instructions about monitoring the service

Nagios

Ganglia

Self Sanity / revival?

Other?

Manuals

External links to manuals

Issues

Information about issues found with this service, and how to deal with them.

Issue1

Issue2