ConfigureCernVMSquid < HEPrc

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This is how to configure a CernVM image to run as a squid server. Refer also to [[ConfigureCernVM]].


---+ CernVM v2.6 Batch Node Configuration
---++ Xen Image Configuration

Do the following:
   * [[ConfigureCernVM#Network_tuning]]
   * [[ConfigureCernVM#SSH_keys]]
   * [[ConfigureCernVM#Filesystem]]

---+++ Squid Cache

<verbatim>
mkdir /mnt/scratch/squid
chown 23.23 /mnt/scratch/squid
</verbatim>

---+++ Squid Settings

In =/etc/squid/squid.conf= set:

<verbatim>

acl RESTRICT_DEST dstdom_regex ^|cvmfs-stratum-one\.cern\.ch|cernvmfs\.gridpp\.rl\.ac\.uk|cvmfs\.racf\.bnl\.gov|cvmfs\.fnal\.gov|cvmfs02\.grid\.sinica\.edu\.tw|$
http_access allow all
http_access deny !RESTRICT_DEST

cache_mem 8192 MB

maximum_object_size_in_memory 128 KB

cache_dir ufs /scratch/squid 49000 16 256
maximum_object_size 1048576 KB

####     logformat awstats %>a %ui %un [%{%d/%b/%Y:%H:%M:%S +0000}tl] "%rm %ru HTTP/%rv" %Hs %<st %Ss:%Sh %tr "%{X-Frontier-Id}>h"

#### cache_store_log none

strip_query_terms off

negative_ttl 1 minute

collapsed_forwarding on
refresh_stale_hit 5 seconds

# cache_mgr  email@example.com

umask 022

### could configure snmp_access

</verbatim>

---+ Squid VM Settings

The VM should have about 12 GB of RAM and 50 GB of scratch space.

-- Main.RyanTaylor - 2013-01-23
Topic revision: r3 - 2013-01-25 - rptaylor