Hello everyone, I previously asked this on the Apache users mailing list - but it occurred to me that this list may be more appropriate)
I'm trying to figure out some weirdness in a fairly large web environment. We're running a web environment using RHEL 4, Apache 2.0.52 with Worker MPM, mod_jk 1.2.20 and jboss/tomcat application servers (Jboss 4 / tomcat55). There's a firewall between our web and application servers, and I have read about mod_jk and firewalls (i.e. socket_keepalive = 1). A weird thing I see is that sometimes, the apache server status page displays requests/threads in the "W" (sending reply) state up to Apache timeout, while the Jboss Jk status shows no threads for that client in the "Service" state. In fact, most of the "busy" threads are reported to be in the "Keepalive" state - I presume due to the use of socket_keepalive = 1 in workers.properties. This means my problem kind of resembles the one described at http://blogs.warwick.ac.uk/chrismay/entry/wierd_apache_mod/, where Apache threads get stuck in the "W" state instead of being closed (as to be expected) - as if client-apache and apache/mod_jk - backend appserver connections are not "detached". I'm wondering what can cause this behaviour, as my worker.properties has the following: socket_timeout=60 connect_timeout=30000 prepost_timeout=30000 reply_timeout=120000 socket_keepalive=1 connection_pool_timeout=600 When socket_keepalive=1, how long does a connection exist between mod_jk and the application server? How can I control it? Do I need to use cache_Size and cache_timeout in workers.properties? I don't quite get their explanation - but cache_timeout does talk about reducing the number of threads on the backend. It seems the poster pointed to by the link I gave solved his problem by implementing the mod_jk firewall howto in the end (i.e. set socket_keepalive to 1) - but I am still having similar issues it seems. Does this ring a bell with anyone? Kind regards, Pieter --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
