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Date: Mon, 2 Oct 2006 15:11:08 -0500
Message-ID: <E0F9BFDBEA81D24EA62E322DA5AA555B938035@CWYMSX03.Corp.Acxiom.net>
Thread-Topic: [users@httpd] RE: Apache/Tomcat request hangs intermittently
Thread-Index: AcbmXOl/MFkVRXZQSeOzuSAAjwA3ugAAF+DQ
From: "Durbha Murali - mdurbh" <Murali.Durbha@acxiom.com>
To: <users@httpd.apache.org>
Subject: RE: [users@httpd] RE: Apache/Tomcat request hangs intermittently

JKMount options from the ./apache/httpd.conf file -

#
# Root context mounts for Tomcat
#
JkMount /*.jsp ajp12
JkMount /servlet/* ajp12
JkMount /* ProspectService
JkMount /bankers/* ProspectService


Regarding Firewall, I'm not sure.  I will check with my team.  Can you
please tell me what impact this command will have?

Also, do you think that worker.ProspectService.socket_keepalive=3DTrue
will have any impact?

Thanks

-----Original Message-----
From: Serge Dubrouski [mailto:sergeyfd@gmail.com]=20
Sent: Monday, October 02, 2006 2:57 PM
To: users@httpd.apache.org
Subject: Re: [users@httpd] RE: Apache/Tomcat request hangs
intermittently

Sorry, I forgot to ask you for your JkMount options.

Also what kind of firewall do you use? IPTables? If yes please check
that you have something like this in your rules:

-A YOUR_CHAIN -m state --state RELATED,ESTABLISHED -j ACCEPT

On 10/2/06, Durbha Murali - mdurbh <Murali.Durbha@acxiom.com> wrote:
> Serge, Thanks for responding.  Connectors and workers.properties given
> below.  Please note that there is a firewall between server running
> Apache and the server running Tomcat.  All the required ports are
> open...since the connection does go thru 3 out of 5 times.  I found
some
> documentation about adding socket_keepalive=3DTrue, and have added it.
> I'm still testing and don't know if that helped or not.
>
> I'd appreciate any thoughts or ideas.
> Thanks
> Murali
>
>
>
> --------------------------------------------------------------
> worker.properties
>
> #
> #------ DEFAULT ajp13 WORKER DEFINITION ------------------------------
> #---------------------------------------------------------------------
> #
>
> #
> # Defining a worker named ajp13 and of type ajp13
> # Note that the name and the type do not have to match.
> #
> worker.ajp13.port=3D8009
> worker.ajp13.host=3Dlocalhost
> worker.ajp13.type=3Dajp13
> #
> # Specifies the load balance factor when used with
> # a load balancing worker.
> # Note:
> #  ----> lbfactor must be > 0
> #  ----> Low lbfactor means less work done by the worker.
> worker.ajp13.lbfactor=3D1
>
> #
> # Specify the size of the open connection cache.
> #worker.ajp13.cachesize
>
> # application specific
> worker.ProspectService.type=3Dajp13
> worker.ProspectService.port=3D8009
> worker.ProspectService.host=3Dxxx
> worker.ProspectService.cachesize=3D5
> # mdurbh, to fix problem with intermittent connection failure
> worker.ProspectService.socket_keepalive=3DTrue
>
>
>  <!-- =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =
Connectors from tomcat's
> server.xml=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =
-->
>
>         <!-- Normal HTTP -->
>         <Connector
> className=3D"org.apache.tomcat.service.PoolTcpConnector">
>             <Parameter name=3D"handler"
>
> value=3D"org.apache.tomcat.service.http.HttpConnectionHandler"/>
>             <Parameter name=3D"port"
>                 value=3D"8080"/>
>         </Connector>
>
>         <!--
>             Uncomment this for SSL support.
>             You _need_ to set up a server certificate if you want this
>             to work, and you need JSSE.
>             1. Add JSSE jars to CLASSPATH
>             2. Edit java.home/jre/lib/security/java.security
>                Add:
>
security.provider.2=3Dcom.sun.net.ssl.internal.ssl.Provider
>             3. Do: keytool -genkey -alias tomcat -keyalg RSA
>                RSA is essential to work with Netscape and IIS.
>                Use "changeit" as password. ( or add keypass attribute
)
>                You don't need to sign the certificate.
>
>             You can set parameter keystore and keypass if you want
>             to change the default ( user.home/.keystore with changeit
)
>          -->
>         <!--
>         <Connector
> className=3D"org.apache.tomcat.service.PoolTcpConnector">
>             <Parameter name=3D"handler"
>
> value=3D"org.apache.tomcat.service.http.HttpConnectionHandler"/>
>             <Parameter name=3D"port"
>                 value=3D"8443"/>
>             <Parameter name=3D"socketFactory"
>                 value=3D"org.apache.tomcat.net.SSLSocketFactory" />
>         </Connector>
>         -->
>
>         <!-- Apache AJP12 support. This is also used to shut down
> tomcat.
>           -->
>         <Connector
> className=3D"org.apache.tomcat.service.PoolTcpConnector">
>             <Parameter name=3D"handler"
>
> value=3D"org.apache.tomcat.service.connector.Ajp12ConnectionHandler"/>
>    <!-- Apache AJP12 support. This is also used to shut down tomcat.
>           -->
>         <Connector
> className=3D"org.apache.tomcat.service.PoolTcpConnector">
>             <Parameter name=3D"handler"
>
> value=3D"org.apache.tomcat.service.connector.Ajp12ConnectionHandler"/>
>             <Parameter name=3D"port" value=3D"8007"/>
>         </Connector>
>
>         <!-- Apache AJP13 support.
>           -->
>         <Connector
> className=3D"org.apache.tomcat.service.PoolTcpConnector">
>             <Parameter name=3D"handler"
>
> value=3D"org.apache.tomcat.service.connector.Ajp13ConnectionHandler"/>
>             <Parameter name=3D"port" value=3D"8009"/>
>         </Connector>
>
> -----Original Message-----
> From: Serge Dubrouski [mailto:sergeyfd@gmail.com]
> Sent: Monday, October 02, 2006 12:44 PM
> To: users@httpd.apache.org
> Subject: Re: [users@httpd] RE: Apache/Tomcat request hangs
> intermittently
>
> Can you post "connectors" part of your Tomcat's server.xml and your
> workers.properties?
>
> On 10/2/06, Durbha Murali - mdurbh <Murali.Durbha@acxiom.com> wrote:
> >
> >
> >
> >
> > Can anyone help me out with this please?  I'm just completely stuck.
> >
> > Thanks
> >
> >
> >
> >
> >
> >  ________________________________
> >
> >
> > From: Durbha Murali - mdurbh
> >  Sent: Friday, September 29, 2006 4:06 PM
> >  To: 'users@httpd.apache.org'
> >  Subject: RE: Apache/Tomcat request hangs intermittently
> >
> >
> >
> >
> >
> > Just to add to this, I'm also getting the following error in tomcat
> > connector's mod_jk.log
> >
> >
> >
> > [Fri Sep 29 14:37:26 2006] [1605:50880] [error]
> > ajp_get_reply::jk_ajp_common.c (1531): Tomcat is down or refused
> connection.
> > No response has been sent to the client (yet)
> >
> > [Fri Sep 29 15:12:42 2006] [1610:50880] [error]
> > ajp_connection_tcp_get_message::jk_ajp_common.c (961):
> > Can't receive the response message from tomcat, network problems or
> tomcat
> > is down (139.x.x.x:8009), err=3D-110
> >
> > [Fri Sep 29 15:12:42 2006] [1610:50880] [error]
> > ajp_get_reply::jk_ajp_common.c (1531): Tomcat is down or refused
> connection.
> > No response has been sent to the client (yet)
> >
> >  ________________________________
> >
> >
> > From: Durbha Murali - mdurbh
> >  Sent: Friday, September 29, 2006 2:44 PM
> >  To: 'users@httpd.apache.org'
> >  Subject: Apache/Tomcat request hangs intermittently
> >
> >
> >
> > We have a webserver with Apache 2.2.2 running that acts as a
> pass-thru,
> > forwarding all  POST requests from the internet to Tomcat.
> >
> > The connection works but sometimes, a request on the webserver just
> hangs.
> > If I re-try a few times, the webpage eventually opens.  I'm not
quite
> sure
> > what is causing this.  If I bounce Apache, it works normally for a
few
> hours
> > and the problem starts again.  For  Debug Loglevel, I get the
> following
> > errors in error_log.  I'm not quite sure if this has anything to do
> with my
> > problem -
> >
> >
> >
> > [Fri Sep 29 11:07:46 2006] [info] [client 10.x.x.x] (32)Broken pipe:
> > core_output_filter: writing data to the network
> >
> > [Fri Sep 29 11:07:51 2006] [info] [client 10.x.x.x] (104)Connection
> reset by
> > peer: core_output_filter: writing data to the network
> >
> > [Fri Sep 29 11:07:51 2006] [info] [client 10.x.x.x] (32)Broken pipe:
> > core_output_filter: writing data to the network
> >
> > [Fri Sep 29 11:08:10 2006] [info] [client 10.x.x.x] (104)Connection
> reset by
> > peer: core_output_filter: writing data to the network
> >
> > [Fri Sep 29 11:08:10 2006] [info] [client 10.x.x.x] (32)Broken pipe:
> > core_output_filter: writing data to the network
> >
> > [Fri Sep 29 11:08:25 2006] [info] [client 10.x.x.x] (104)Connection
> reset by
> > peer: core_output_filter: writing data to the network
> >
> > [Fri Sep 29 11:08:25 2006] [info] [client 10.x.x.x] (32)Broken pipe:
> > core_output_filter: writing data to the network
> >
> > [Fri Sep 29 11:09:18 2006] [info] [client 10.x.x.x] (104)Connection
> reset by
> > peer: core_output_filter: writing data to the network
> >
> > [Fri Sep 29 11:09:18 2006] [info] [client 10.x.x.x] (32)Broken pipe:
> > core_output_filter: writing data to the network
> >
> >
> >
> >
> >
> > When I do a netstat -a on the webserver, I see that the connection
has
> been
> > established, but my browser just keeps spinning and spinning.
> >
> >
> >
> > tcp        0      0 *:8000                      *:*
> > LISTEN
> >
> > tcp        0      0 <webserver>:8000 ::ffff:<mylocalIP>:1757
> ESTABLISHED
> >
> >
> >
> > This is our Production website.  Can someone please help me out?
> >
> >
> >
> > Thanks very much.
> >
> > Murali
> >
> >
> >
>
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