I installed the squid cache for atlas on a SL5 32bit machine. There are no rpms from the project in 32bit. There is a default OS squid rpm but it is apparently bugged and the request is to install a 2.7-STABLE7 version. So I got the source rpm from here
https://twiki.cern.ch/twiki/bin/view/PDBService/SquidRPMsTier1andTier2
rpmbuild --rebuild frontier-squid-2.7.STABLE7-4.sl5.src.rpm
it will compile the squid for your system. And create a binary rpm in
/usr/src/redhat/RPMS/i386/frontier-squid-2.7.STABLE7-4.sl5.i386.rpm
rpm -ihv /usr/src/redhat/RPMS/i386/frontier-squid-2.7.STABLE7-4.sl5.i386.rpm
It will install everything in /home/squid - apparently it is relocatable but I don't mind the location so I left it.
Edit /home/squid/etc/squid.conf
Not everything you find in the BNL instructions is necessary. Here is my list of changes
acl SUBNET-NAME src SUBNET-IPS <---- there are different ways to express this
http_access allow SUBNET-NAME
hierarchy stoplist cgi-bin ?
cache_mem 256 MB
maximum_object_size_in_memory 128 KB
cache_dir ufs /home/squid/var/cache 100000 16 256
maximum_object_size 1048576 KB
update_headers off
cache_log /home/squid/var/logs/cache.log
cache_store_log none
strip_query_terms off
refresh_pattern -i /cgi-bin/ 0 0% 0
cache_effective_user squid <--- default is nobody doesn't have access to /home/squid
icp_port 0
Edit /home/squid/sbin/fn-local-squid.sh
Add these two lines
# chkconfig: - 99 21
# description: Squid cache startup script
then
ln -s /home/squid/sbin/fn-local-squid.sh /etc/init.d/squid
chkconfig --add squid
chkconfig squid on
Write to Rod Walker to authorize your machine in the gridka Frontier server (until RAL is up that's the server for Europe) if you can set up an alias for the machine do it before writing him.
To test the setup
wget http://frontier.cern.ch/dist/fnget.py
export http_proxy=http://YOU-SQUID-CAHE:3128
python fnget.py --url=http://atlassq1-fzk.gridka.de:8021/fzk/Frontier --sql="SELECT TABLE_NAME FROM ALL_TABLES"
if you get many lines similar to those below
COMP200_F0027_TAGS_SEQ
COMP200_F0037_IOVS_SEQ
COMP200_F0020_IOVS_SEQ
your cache is working.
