Apache2 + mod_jk2 on FreeBSD - default socket timeout (bug?)

[Michael Diener <mi...@synchronica.com>]

Hi there,

I've got a problem with mod_jk2 and Apache2 under FreeBSD and I think it is
a bug. I configured mod_jk2 for two Tomcat servers. If one of these machines
is down (unplugging the network cable), mod_jk2 should send all requests to
the server that kept running. That is working 90 percent of the time, but
sometimes forwarding the request takes about 75 seconds. I found out that
this is the default socket timeout of FreeBSD. The problem is that I
configured mod-jk2 the way, that it has its own timeout for connecting (see
attached workers2.properties). But this value is not recognized. If I
decrease the default connect timeout for FreeBSD (by /etc/sysctl.conf),
mod_jk2 will use this value and everything is fine. But I don't want to
decrease that value, it could cause other problems.
So I think it is a bug, that mod_jk2 is not using the timeout values from
its workers2.properties in FreeBSD.
Btw exactly the same setup for Apache2 and mod_jk2 works fine on Linux.

Regards,
Michael

RE: Apache2 + mod_jk2 on FreeBSD - default socket timeout (bug?)

[Michael Diener <mi...@synchronica.com>]

Ok, and here is the attachment.
I also forgot to mention that FreeBSD has the version 5.x and Tomcat the
version 5.

Michael


------------------------------

[logger]
level=DEBUG

[shm]
file=/tmp/shmFile

# Defines a load balancer named lb. 
[lb:lb]

[workerEnv:]
info=Global server options
timing=1

# Example socket channel, override port and host.
[channel.socket:192.168.1.124:8009]
tomcatId=camenzind
timeout=1

# Example socket channel, override port and host.
[channel.socket:192.168.1.123:8009]
tomcatId=haller
timeout=1

# define the worker 1
[ajp13:192.168.1.124:8009]
channel=channel.socket:192.168.1.124:8009

# define the worker 2
[ajp13:192.168.1.123:8009]
channel=channel.socket:192.168.1.123:8009

# Mapping my URI to Tomcats
[uri:/myURI*]
group=lb

[status:]
info=Status worker, displays runtime information

[uri:/jkstatus/*]
info=The Tomcat /jkstatus handler
group=status:


-----Original Message-----
From: Michael Diener [mailto:michael@synchronica.com] 
Sent: Dienstag, 26. Oktober 2004 09:41
To: tomcat-user@jakarta.apache.org
Subject: Apache2 + mod_jk2 on FreeBSD - default socket timeout (bug?)

Hi there,

I've got a problem with mod_jk2 and Apache2 under FreeBSD and I think it is
a bug. I configured mod_jk2 for two Tomcat servers. If one of these machines
is down (unplugging the network cable), mod_jk2 should send all requests to
the server that kept running. That is working 90 percent of the time, but
sometimes forwarding the request takes about 75 seconds. I found out that
this is the default socket timeout of FreeBSD. The problem is that I
configured mod-jk2 the way, that it has its own timeout for connecting (see
attached workers2.properties). But this value is not recognized. If I
decrease the default connect timeout for FreeBSD (by /etc/sysctl.conf),
mod_jk2 will use this value and everything is fine. But I don't want to
decrease that value, it could cause other problems.
So I think it is a bug, that mod_jk2 is not using the timeout values from
its workers2.properties in FreeBSD.
Btw exactly the same setup for Apache2 and mod_jk2 works fine on Linux.

Regards,
Michael



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