I buried this email deep in another thread, bringing it back to the top
with a new message.
I have a bunch of rewrites that I need to do to incoming requests. I
tried initially putting them all in the frontend, but that didn't work.
What finally worked was creating multiple backends, each with one
reqirep in it and the same pair of server entries in all of them. Is it
a known limitation that only one reqrep/reqirep statement is allowed?
Is there a way to streamline my configuration so that I only have to
define the server list once? Can you put multiple reqirep statements in
the backend? I haven't tried this yet because they won't let me risk
breaking it for a day or two.
Management is actually likely to want to keep the multiple backends in
place because it does give a wealth of information on the stats page,
but I would like to avoid the config duplication. I did see that the
latest dev version lets you include external files in the config, which
could be one way to deal with this.
Another notion would be the ability to chain backends ... your frontend
has use_backend, where you do rewrites or whatnot. With this ability,
you would put another use_backend statement in the first backend to
point it at the final section that has the server definitions. Yet
another approach - create an option to define macros or substitution
variables that you can specify in your config sections.
Thoughts?
---------------
frontend foo *:80
acl bot hdr_sub(User-Agent) -i ia_archiver jeeves googlebot
mediapartners-google msnbot slurp zyborg
acl foo path_beg -i /foo/
acl fooc path_beg -i /fooc/
acl fooh path_beg -i /fooh/
acl foothumb path_beg -i /foothumb/
acl featured path_beg -i /featured/foothumbnew/
acl cgi path_beg -i /cgi-bin/cgi-gw.exe
use_backend apache_fooh if bot fooh
use_backend apache_foo if foo
use_backend apache_fooc if fooc
use_backend apache_foothumb if foothumb
use_backend apache_featured if featured
use_backend apache if cgi
default_backend tomcat
backend tomcat
balance leastconn
server server8080 10.10.14.127:8080 check
server server8081 10.10.14.127:8081 backup check
backend apache
balance leastconn
server server8080 10.10.14.127:8080 check
server server8081 10.10.14.127:8081 check
backend apache_foo
reqirep ^([^\ ]*)\ /foo/(.*) \1\
/cgi-bin/cgi-gw.exe?action=webres&fooid=\2
balance leastconn
server server8080 10.10.14.127:8080 check
server server8081 10.10.14.127:8081 check
backend apache_fooh
reqirep ^([^\ ]*)\ /fooh/(.*) \1\
/cgi-bin/cgi-gw.exe?action=autodetails&fooid=\2
balance leastconn
server server8080 10.10.14.127:8080 check
server server8081 10.10.14.127:8081 check
backend apache_fooc
reqirep ^([^\ ]*)\ /fooc/(.*) \1\
/cgi-bin/cgi-gw.exe?action=capt&fooid=\2
balance leastconn
server server8080 10.10.14.127:8080 check
server server8081 10.10.14.127:8081 check
backend apache_foothumb
reqirep ^([^\ ]*)\ /foothumb/(.*) \1\
/cgi-bin/cgi-gw.exe?action=thumbres&fooid=\2
balance leastconn
server server8080 10.10.14.127:8080 check
server server8081 10.10.14.127:8081 check
backend apache_featured
reqirep ^([^\ ]*)\ /featured/foothumbnew/(.*) \1\
/cgi-bin/cgi-gw.exe?action=thumbreshigh&fooid=\2
balance leastconn
server server8080 10.10.14.127:8080 check
server server8081 10.10.14.127:8081 check
