Hi,
Chris Robertson a écrit :
incomming URL: somedomaine/path/script.php => should go to peer which
host script, php
incomming URL: somedomaine/imagepath/someimg.jpg => should go to
static peer, filer
So I've a redirector which analyze the URL based on some regexp. It
was needed for 2.5. Because the redirector script was embedding the
round robbing balancing algorithm.
I don't find any good doc on how to use all those rewriting url +
peer balancing etc. Can someone point me to some good ref?
http://wiki.squid-cache.org/SquidFaq/ReverseProxy#head-7bd155a1a9919bda8ff10ca7d3831458866b72eb
Thanks Chris for the link, but I've found this one, and if didn't fit my
need.
I've found by myself.
Here's one solution, for squid Version 2.6.STABLE5:
# put squid in accelerator mode
http_port 80 defaultsite=my.site.com vhost
# some peer (backends/origin server)
# here round robin same weight, you can have lot more server if needed.
found in the FAQ URL above.
cache_peer php-01 parent 80 0 no-query originserver round-robin weight=1
login=PASS
cache_peer php-02 parent 80 0 no-query originserver round-robin weight=1
login=PASS
# + the filer for static content, I add another peer for content filtering
cache_peer filer-01 parent 80 0 no-query originserver name=filergrp
# the redirector, next I will try to remove it and use squid regexep
# it receives and returns the following content: (from cache.log debug
enabled)
# helperSubmit: http://my.site.com/img/file.jpg IP/domain - GET -
# helperHandleRead: '!filer! http://filer-01/img/file.jpg IP/domain - GET -
# it uses the urlgroup to tag the url, here : filer
url_rewrite_program /etc/squid/redirector.pl
# some parameter to config the redirector, here 5 process
url_rewrite_children 5
# which don't know how to handle concurrency
url_rewrite_concurrency 0
# we need to keep the host header not to be rewrote by squid (vhosts
name based)
url_rewrite_host_header off
# one acl for matching the tag urlgroup done by the redirector
acl static_doc urlgroup filer
# filtering to originserver based on acl tagged url
# static_doc (tagged by urlgroup by the redirector + the acl) are
allowed on the filer peer server, nothing else
cache_peer_access filergrp allow static_doc
cache_peer_access filergrp deny all
# static content are note allowed on backend pool, but all other
content, no tagged as static will be load balanced here.
cache_peer_access php-01 deny static_doc
cache_peer_access php-02 deny static_doc
sounds working for me, it also includes some more acl but not related to
accelerator mode reverse proxy.
Here it is.
I may update the wiki because of the lact of documentation using the
urlgroup behavior, also the doc in acl seems wrong:
http://www.squid-cache.org/Versions/v2/2.6/cfgman/acl.html
acl urlgroup group1 ...
# match against the urlgroup as indicated by redirectors
Seems to miss the acl_name part => acl acl_name urlgroup group1 ...
no?
It works for me.
Regards,
Sylvain.
