Hi everyone. We have a set of load balanced back end appservers behind haproxy. We're running pretty large amount of traffic and things have been running great for the last 2 years or so.
We'd like the ability to manually specify a back end server within a cluster (this has to do with running a command to flush out the cache on a specific server). Without manually altering the cookie in the browser to specify which back end server to use, can we do something like add a string onto the URL to specify which of the back end servers to use? For the following config, we normally hit http://stg.redacted.com, and it sets the HASRVID cookie which it uses to specify the back end. Can we do something like http://stg.redacted.com/?HASRVID=stg-2 to manually select the back end? Here's the relevant sections of our config file: defaults balance roundrobin frontend http_proxy use_backend blahblah backend blahblah mode http option httpchk GET /magicurl cookie HASRVID insert indirect nocache server stg-1 stg-1.REDACTED.com:80 cookie stg-1 check inter 10000 rise 2 fall 5 server stg-2 stg-2.REDACTED.com:80 cookie stg-2 check inter 10000 rise 2 fall 5 server stg-3 stg-3.REDACTED.com:80 cookie stg-3 check inter 10000 rise 2 fall 5 Thanks! -d
