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Posted to users@tomcat.apache.org by James Courtney <Jc...@inphonic.com> on 2003/07/01 23:19:23 UTC
PLEASE HELP - Apache mod_jk2 loses communication with Tomcat
I'm trying again as no one responded to my first email. We REALLY need to resolve this issue. Thanks!
We recently upgraded our production systems to Tomcat 4.1.24 and Apache 2.0.45 from 3.2.2 and 1.3.19 respectively and have noticed a VERY pleasing increase in performance and over an 80% reduction in system load. We also decided to deploy with mod_jk2 and the whole system behaved itself quite well during QA and some load testing (admittedly not overly thorough). We pushed to production and things ran fine for a couple of days but now, every day or two, our Apache partially loses communication with one of the two Tomcats it's load balancing accross (not always the same one). The result is that requests block on Apache and the load goes up as users click away trying to get their page(s) to load. Restarting the Tomcat seems to rectify the problem until the next time...
Any thoughts on this problem and the overall maturity of mod_jk2 vs. mod_jk would be very helpful. Many thanks to all!
Jamey
James Courtney
InPhonic, Inc.
Hayward, CA
*******************
** Apache Errors **
*******************
inunison.com:8081 145 Connection timed out [Wed Jun 25 15:08:10 2003] [error] ajp13.connect() failed ajp13:portal4.somedomain.com:8081 [Wed Jun 25 15:08:10 2003] [error] ajp13.service() failed to connect endpoint errno=145 Connection timed out [Wed Jun 25 15:08:10 2003] [error] ajp13.service() Error forwarding ajp13:portal4.somedomain.com:8081 1 1 [Wed Jun 25 15:08:10 2003] [error] lb.service() worker failed 120000 for ajp13:portal4.somedomain.com:8081 [Wed Jun 25 15:08:13 2003] [error] channelSocket.open() connect failed portal4.somedomain.com:8081 145 Connection timed out [Wed Jun 25 15:08:13 2003] [error] ajp13.connect() failed ajp13:portal4.somedomain.com:8081 [Wed Jun 25 15:08:13 2003] [error] ajp13.service() failed to connect endpoint errno=145 Connection timed out [Wed Jun 25 15:08:13 2003] [error] ajp13.service() Error forwarding ajp13:portal4.somedomain.com:8081 1 1 [Wed Jun 25 15:08:13 2003] [error] lb.service() worker failed 120000 for ajp13:portal4.somedomain.com:8081 [Wed Jun 25 15:08:22 2003] [error] channelSocket.open() connect failed portal4.somedomain.com:8081 145 Connection timed out [Wed Jun 25 15:08:22 2003] [error] ajp13.connect() failed ajp13:portal4.somedomain.com:8081 [Wed Jun 25 15:08:22 2003] [error] ajp13.service() failed to connect endpoint errno=145 Connection timed out [Wed Jun 25 15:08:22 2003] [error] ajp13.service() Error forwarding ajp13:portal4.somedomain.com:8081 1 1 [Wed Jun 25 15:08:22 2003] [error] lb.service() worker failed 120000 for ajp13:portal4.somedomain.com:8081
****************************
** WORKERS2 CONFIGURATION **
****************************
# only at beginning. In production uncomment it out
[logger.apache2]
level=ERROR
[shm]
file=/tmp/workers2shmDONOTDELETE.file
size=1048576
# portal3 socket
[channel.socket:portal3.somedomain.com:8081]
host=portal3.somedomain.com
port=8081
tomcatId=portal3
group=lb:balanced
graceful=1
# portal3 worker
[ajp13:portal3.somedomain.com:8081]
channel=channel.socket:portal3.somedomain.com:8081
lb_factor=12
# portal4 socket
[channel.socket:portal4.somedomain.com:8081]
host=portal4.somedomain.com
port=8081
tomcatId=portal4
group=lb:balanced
# portal4 worker
[ajp13:portal4.somedomain.com:8081]
channel=channel.socket:portal4.somedomain.com:8081
lb_factor=12
# Load balanced worker
[lb:balanced]
worker=ajp13:portal3.somedomain.com:8081
worker=ajp13:portal4.somedomain.com:8081
# sticky is on by default but setting it adds a harmless error to the log
#stickySession=1
# Define a status worker
[status:status]
# URI mapping
[uri:/*]
group=lb:balanced
# Status URI mapping (should not be publicly accessible!!!)
[uri:/jkstatus]
group=status:status
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Re: PLEASE HELP - Apache mod_jk2 loses communication with Tomcat
Posted by "Eric J. Pinnell" <er...@iCky.org>.
Your workers2.properties looks a little off. I don't know if this is the
root of your problem but it should look more like:
[shm]
file=${serverRoot}/logs/shm.file
size=1048576
[lb:lb_01]
info=Default load balancer.
debug=0
# Example socket channel, override port and host.
[channel.socket:localhost:8109]
info=Ajp13 forwarding over a TCP socket
tomcatId=worker1:8109
lb_factor=100
group=lb_01
# define the worker
[channel.socket:localhost:8209]
info=A second tomcat instance on a different port.
tomcatId=worker2:8209
lb_factor=100
group=lb_01
# Uri mapping
[uri:/*]
group=lb_01
debug=0
You have to adjust it to your own needs. You can change 'localhost' to
another IP or servername.
-e
On Tue, 1 Jul 2003, James Courtney wrote:
> I'm trying again as no one responded to my first email. We REALLY need to resolve this issue. Thanks!
>
>
> We recently upgraded our production systems to Tomcat 4.1.24 and Apache 2.0.45 from 3.2.2 and 1.3.19 respectively and have noticed a VERY pleasing increase in performance and over an 80% reduction in system load. We also decided to deploy with mod_jk2 and the whole system behaved itself quite well during QA and some load testing (admittedly not overly thorough). We pushed to production and things ran fine for a couple of days but now, every day or two, our Apache partially loses communication with one of the two Tomcats it's load balancing accross (not always the same one). The result is that requests block on Apache and the load goes up as users click away trying to get their page(s) to load. Restarting the Tomcat seems to rectify the problem until the next time...
>
> Any thoughts on this problem and the overall maturity of mod_jk2 vs. mod_jk would be very helpful. Many thanks to all!
>
>
> Jamey
>
>
> James Courtney
> InPhonic, Inc.
> Hayward, CA
>
>
> *******************
> ** Apache Errors **
> *******************
> inunison.com:8081 145 Connection timed out [Wed Jun 25 15:08:10 2003] [error] ajp13.connect() failed ajp13:portal4.somedomain.com:8081 [Wed Jun 25 15:08:10 2003] [error] ajp13.service() failed to connect endpoint errno=145 Connection timed out [Wed Jun 25 15:08:10 2003] [error] ajp13.service() Error forwarding ajp13:portal4.somedomain.com:8081 1 1 [Wed Jun 25 15:08:10 2003] [error] lb.service() worker failed 120000 for ajp13:portal4.somedomain.com:8081 [Wed Jun 25 15:08:13 2003] [error] channelSocket.open() connect failed portal4.somedomain.com:8081 145 Connection timed out [Wed Jun 25 15:08:13 2003] [error] ajp13.connect() failed ajp13:portal4.somedomain.com:8081 [Wed Jun 25 15:08:13 2003] [error] ajp13.service() failed to connect endpoint errno=145 Connection timed out [Wed Jun 25 15:08:13 2003] [error] ajp13.service() Error forwarding ajp13:portal4.somedomain.com:8081 1 1 [Wed Jun 25 15:08:13 2003] [error] lb.service() worker failed 120000 for ajp13:portal4.somedomain.com:8081 [Wed Jun 25 15:08:22 2003] [error] channelSocket.open() connect failed portal4.somedomain.com:8081 145 Connection timed out [Wed Jun 25 15:08:22 2003] [error] ajp13.connect() failed ajp13:portal4.somedomain.com:8081 [Wed Jun 25 15:08:22 2003] [error] ajp13.service() failed to connect endpoint errno=145 Connection timed out [Wed Jun 25 15:08:22 2003] [error] ajp13.service() Error forwarding ajp13:portal4.somedomain.com:8081 1 1 [Wed Jun 25 15:08:22 2003] [error] lb.service() worker failed 120000 for ajp13:portal4.somedomain.com:8081
>
> ****************************
> ** WORKERS2 CONFIGURATION **
> ****************************
> # only at beginning. In production uncomment it out
> [logger.apache2]
> level=ERROR
>
> [shm]
> file=/tmp/workers2shmDONOTDELETE.file
> size=1048576
>
> # portal3 socket
> [channel.socket:portal3.somedomain.com:8081]
> host=portal3.somedomain.com
> port=8081
> tomcatId=portal3
> group=lb:balanced
> graceful=1
>
> # portal3 worker
> [ajp13:portal3.somedomain.com:8081]
> channel=channel.socket:portal3.somedomain.com:8081
> lb_factor=12
>
> # portal4 socket
> [channel.socket:portal4.somedomain.com:8081]
> host=portal4.somedomain.com
> port=8081
> tomcatId=portal4
> group=lb:balanced
>
> # portal4 worker
> [ajp13:portal4.somedomain.com:8081]
> channel=channel.socket:portal4.somedomain.com:8081
> lb_factor=12
>
>
> # Load balanced worker
> [lb:balanced]
> worker=ajp13:portal3.somedomain.com:8081
> worker=ajp13:portal4.somedomain.com:8081
> # sticky is on by default but setting it adds a harmless error to the log
> #stickySession=1
>
>
> # Define a status worker
> [status:status]
>
>
> # URI mapping
> [uri:/*]
> group=lb:balanced
>
>
> # Status URI mapping (should not be publicly accessible!!!)
> [uri:/jkstatus]
> group=status:status
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tomcat-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tomcat-user-help@jakarta.apache.org
>
>
>
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