arungupta wrote:
Configured mod_proxy_balancer for front-ending a bunch of GlassFish instances. How do I print the backend host/port in the log ?
In general, Apache environment variables (distinct from OS environment variables) are logged via %{envvar-name}e. The special environment variables created by the balancer are documented at
http://httpd.apache.org/docs/2.2/mod/mod_proxy_balancer.html#environment. BALANCER_WORKER_NAME seems to be the one you want:
BALANCER_WORKER_NAME
This is assigned the name of the worker used for the current request. The value is something like
http://hostA:1234.