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Date: Mon, 2 Oct 2006 16:05:41 -0500
Message-ID: <E0F9BFDBEA81D24EA62E322DA5AA555B938039@CWYMSX03.Corp.Acxiom.net>
Thread-Topic: [users@httpd] RE: Apache/Tomcat request hangs intermittently
Thread-Index: AcbmX1g90b04+R5jSaip7/zkljRfGgABmQzA
From: "Durbha Murali - mdurbh" <Murali.Durbha@acxiom.com>
To: <users@httpd.apache.org>
Subject: RE: [users@httpd] RE: Apache/Tomcat request hangs intermittently

The only JKMount that is relevant for our application right now is -

JkMount /bankers/* ProspectService

We are using Apache just as a pass-thru to the ProspectService.  We are
not running any servlets or JSPs.  I think the rest of the JKMount lines
can be ignored.  Sorry about the confusion.

Thanks
Murali
=20
-----Original Message-----
From: Serge Dubrouski [mailto:sergeyfd@gmail.com]=20
Sent: Monday, October 02, 2006 3:14 PM
To: users@httpd.apache.org
Subject: Re: [users@httpd] RE: Apache/Tomcat request hangs
intermittently

On 10/2/06, Durbha Murali - mdurbh <Murali.Durbha@acxiom.com> wrote:
> JKMount options from the ./apache/httpd.conf file -
>
> #
> # Root context mounts for Tomcat
> #
> JkMount /*.jsp ajp12
> JkMount /servlet/* ajp12

You do not have ajp12 connector configured in your workers.properties.
So why do you have it here? What is supposed to process your jsp and
servlets?

> 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]
> 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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>
************************************************************************
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> > >
> >
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