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Posted to users@httpd.apache.org by Onur Ağın <on...@gmail.com> on 2009/11/24 11:04:58 UTC
[users@httpd] Load balancer sticky session problem
Hi,
With the configuration below, sticky sessions won't work...
I checked that both servers get the request with the same session IDs.
Any ideas?
<VirtualHost *:8001>
# Proxy
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
<Proxy balancer://ow1 stickysession=JSESSIONID lbmethod=byrequests>
BalancerMember http://10.xxx:7101
BalancerMember http://10.xxx:7102
</Proxy>
ProxyPass / balancer://ow1/
</VirtualHost>
<VirtualHost *:8002>
# Proxy
ProxyRequests Off
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
<Proxy balancer://ow2 stickysession=JSESSIONID lbmethod=byrequests>
BalancerMember http://10.xxx:7103
BalancerMember http://10.xxx:7104
</Proxy>
ProxyPass / balancer://ow2/
</VirtualHost>
Also my request header is:
GET
/xxx/resources/org.apache.wicket.markup.html.WicketEventReference/wicket-event.js;jsessionid=76BF17CE24DB39AC8F6B3639BBA5727D
HTTP/1.1
Accept: */*
Referer: http://10.xxx:8001/xxx/?class=texan.acq.ui.param.MERPARAM
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR
2.0.50727; MS-RTC LM 8; InfoPath.2)
Host: 10.xxx:8001
Connection: Keep-Alive
Cookie: JSESSIONID=76BF17CE24DB39AC8F6B3639BBA5727D
Re: [users@httpd] Load balancer sticky session problem
Posted by Nuno Fernandes <np...@eurotux.com>.
On Tuesday 24 November 2009 12:47:16 Onur Ağın wrote:
> Yes, the cookie is JSESSIONID,
> In the server response, Set-Cookie:JSESSIONID=xxxxx;path=xxx;
> I am using a tomcat 6.0 server.
The tomcat should reply:
Set-Cookie:JSESSIONID=xxxxx.TOMCAT1;path=xxx;
It lacks the . and the route to the tomcat.
Add this to the server.xml of the tomcat1:
<Engine name="Catalina" defaultHost="xxx.com" debug="0"
jvmRoute="TOMCAT1">
Best regards,
Nuno Fernandes
>
> On Tue, Nov 24, 2009 at 2:39 PM, Boyle Owen <Ow...@six-group.com>wrote:
> > Forget the failover thing - Let's get back to your original problem
> > which is stickysession not working.
> >
> > Have you checked you have the session cookie in the request and that
> > it's called JSESSIONID?
> > Check http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypass for
> > details on how it is supposed to work.
> >
> > Rgds,
> > Owen Boyle
> > Disclaimer: Any disclaimer attached to this message may be ignored.
> > ________________________________
> >
> > From: Onur Agin [mailto:onuragin@gmail.com]
> > Sent: Tuesday, November 24, 2009 1:23 PM
> > To: users@httpd.apache.org
> > Subject: Re: [users@httpd] Load balancer sticky session problem
> >
> >
> > What if I have a session clustering mechanism which works
> > asynchronously, so if host A fails, then the sessions will be replicated
> > to server B in several seconds, and if the session is sticky and request
> > is moved to B, only request that will come on that second will fail. But
> > if the load balancer is not sticky, it won't work since the sessions are
> > not replicated realtime
> >
> > On Tue, Nov 24, 2009 at 2:16 PM, Boyle Owen
> >
> > <Ow...@six-group.com> wrote:
> > > ? ? ? "The downside is that if the desired server is
> >
> > really down, the
> > request
> >
> > > ? ? ? will eventually fail."
> > >
> > > ? ? ? I wouldn't want this, the reason why I am using
> >
> > a load balancer
> > is to have high availability,
> >
> > > not just to balance a load.
> > >
> > > ? ? ? How can I overcome this?
> > > ? ? ? Aren't there any alternatives?
> >
> > What do you imagine can happen? If you want sessions to
> > be sticky then
> > if a request has session ID that points to server-A, the
> > request *must*
> > go there. If server-A is unavailable, the request must
> > wait.
> >
> > Alternatively, you can allow failover and then the
> > request will go
> > straight to server-B, but then it has the wrong session
> > cookie.
> >
> > Session affinity and failover are mutually exclusive -
> > there is no way
> > round it.
> >
> > > ? ? ? Also what does it mean to be busy?
> > > ? ? ? Currently I am using my pc to act as a load
> >
> > balancer in front of
> > powerfull servers and there
> >
> > > is only one page request, how can it be busy?
> >
> > No idea. It's your server.. You posted that
> > stickysession wasn't working
> > and I posted back a possible explanation and something
> > to try (did you?)
> > Maybe it's not the problem - try it and see :-)
> >
> >
> > Rgds,
> > Owen Boyle
> > Disclaimer: Any disclaimer attached to this message may
> > be ignored.
> >
> >
> >
> >
> > ? ? ? ?On Tue, Nov 24, 2009 at 12:27 PM, Boyle Owen
> > <Ow...@six-group.com> wrote:
> >
> >
> > ? ? ? ? ? ? ? ?Try adding "nofailover=On" to the Proxy
> > tag, ie
> >
> >
> > ? ? ? ? ? ? ? ?<Proxy balancer://ow1
> > stickysession=JSESSIONID
> > lbmethod=byrequests
> >
> > ? ? ? ? ? ? ? ?nofailover=On>
> > ? ? ? ? ? ? ? ?...
> >
> > ? ? ? ? ? ? ? ?By default, if the desired balancer
> > member is busy, the
> > request will be
> > ? ? ? ? ? ? ? ?routed to another one, even if the
> > stickysession doesn't
> > match (this is
> > ? ? ? ? ? ? ? ?"failover"). To force apache to hold the
> > request until
> > the server is
> > ? ? ? ? ? ? ? ?free again, you need to switch this off
> > by switching ON
> > "nofailover" (so
> > ? ? ? ? ? ? ? ?switching OFF "failover" - confusing, eh?
> >
> > :-)
> >
> > ? ? ? ? ? ? ? ?The downside is that if the desired
> > server is really
> > down, the request
> > ? ? ? ? ? ? ? ?will eventually fail.
> >
> > ? ? ? ? ? ? ? ?Rgds,
> > ? ? ? ? ? ? ? ?Owen Boyle
> > ? ? ? ? ? ? ? ?Disclaimer: Any disclaimer attached to
> > this message may
> > be ignored.
> >
> >
> >
> >
> > ? ? ? ? ? ? ? ?________________________________
> >
> > ? ? ? ? ? ? ? ?? ? ? ?From: Onur Agin
> > [mailto:onuragin@gmail.com]
> > ? ? ? ? ? ? ? ?? ? ? ?Sent: Tuesday, November 24, 2009
> > 11:05 AM
> > ? ? ? ? ? ? ? ?? ? ? ?To: users@httpd.apache.org
> > ? ? ? ? ? ? ? ?? ? ? ?Subject: [users@httpd] Load
> > balancer sticky
> > session problem
> >
> >
> >
> > ? ? ? ? ? ? ? ?? ? ? ?Hi,
> >
> > ? ? ? ? ? ? ? ?? ? ? ?With the configuration below,
> > sticky sessions
> > won't work...
> > ? ? ? ? ? ? ? ?? ? ? ?I checked that both servers get
> > the request with
> > the same
> > ? ? ? ? ? ? ? ?session IDs.
> > ? ? ? ? ? ? ? ?? ? ? ?Any ideas?
> >
> >
> > ? ? ? ? ? ? ? ?? ? ? ?<VirtualHost *:8001>
> > ? ? ? ? ? ? ? ?? ? ? ?# Proxy
> > ? ? ? ? ? ? ? ?? ? ? ?ProxyRequests Off
> > ? ? ? ? ? ? ? ?? ? ? ?<Proxy *>
> > ? ? ? ? ? ? ? ?? ? ? ???Order deny,allow
> > ? ? ? ? ? ? ? ?? ? ? ???Allow from all
> > ? ? ? ? ? ? ? ?? ? ? ?</Proxy>
> > ? ? ? ? ? ? ? ?? ? ? ?<Proxy balancer://ow1
> > stickysession=JSESSIONID
> > ? ? ? ? ? ? ? ?lbmethod=byrequests>
> > ? ? ? ? ? ? ? ?? ? ? ???BalancerMember
> > http://10.xxx:7101
> > ? ? ? ? ? ? ? ?? ? ? ???BalancerMember
> > http://10.xxx:7102
> > ? ? ? ? ? ? ? ?? ? ? ?</Proxy>
> >
> > ? ? ? ? ? ? ? ?? ? ? ?ProxyPass / balancer://ow1/
> > ? ? ? ? ? ? ? ?? ? ? ?</VirtualHost>
> >
> > ? ? ? ? ? ? ? ?? ? ? ?<VirtualHost *:8002>
> >
> > ? ? ? ? ? ? ? ?? ? ? ?# Proxy
> > ? ? ? ? ? ? ? ?? ? ? ?ProxyRequests Off
> > ? ? ? ? ? ? ? ?? ? ? ?<Proxy *>
> > ? ? ? ? ? ? ? ?? ? ? ???Order deny,allow
> > ? ? ? ? ? ? ? ?? ? ? ???Allow from all
> > ? ? ? ? ? ? ? ?? ? ? ?</Proxy>
> > ? ? ? ? ? ? ? ?? ? ? ?<Proxy balancer://ow2
> > stickysession=JSESSIONID
> > ? ? ? ? ? ? ? ?lbmethod=byrequests>
> > ? ? ? ? ? ? ? ?? ? ? ???BalancerMember
> > http://10.xxx:7103
> > ? ? ? ? ? ? ? ?? ? ? ???BalancerMember
> > http://10.xxx:7104
> > ? ? ? ? ? ? ? ?? ? ? ?</Proxy>
> >
> > ? ? ? ? ? ? ? ?? ? ? ?ProxyPass / balancer://ow2/
> > ? ? ? ? ? ? ? ?? ? ? ?</VirtualHost>
> >
> >
> > ? ? ? ? ? ? ? ?? ? ? ?Also my request header is:
> >
> > ? ? ? ? ? ? ? ?? ? ? ?GET
> >
> >
> > /xxx/resources/org.apache.wicket.markup.html.WicketEventReference/wicket
> > ? ? ? ? ? ? ?
> > ?-event.js;jsessionid=76BF17CE24DB39AC8F6B3639BBA5727D
> > HTTP/1.1
> > ? ? ? ? ? ? ? ?? ? ? ?Accept: */*
> > ? ? ? ? ? ? ? ?? ? ? ?Referer:
> >
> >
> > http://10.xxx:8001/xxx/?class=texan.acq.ui.param.MERPARAM
> > ? ? ? ? ? ? ? ?? ? ? ?Accept-Language: en-us
> > ? ? ? ? ? ? ? ?? ? ? ?Accept-Encoding: gzip, deflate
> > ? ? ? ? ? ? ? ?? ? ? ?User-Agent: Mozilla/4.0
> > (compatible; MSIE 6.0;
> > Windows NT 5.1;
> > ? ? ? ? ? ? ? ?SV1; .NET CLR 2.0.50727; MS-RTC LM 8;
> > InfoPath.2)
> > ? ? ? ? ? ? ? ?? ? ? ?Host: 10.xxx:8001
> > ? ? ? ? ? ? ? ?? ? ? ?Connection: Keep-Alive
> > ? ? ? ? ? ? ? ?? ? ? ?Cookie:
> > JSESSIONID=76BF17CE24DB39AC8F6B3639BBA5727D
> >
> >
> > ? ? ? ? ? ? ? ?This message is for the named person's
> > use only. It may
> > contain confidential, proprietary or legally privileged
> > information. If
> > you receive this message in error, please notify the
> > sender urgently and
> > then immediately delete the message and any copies of it
> > from your
> > system. Please also immediately destroy any hardcopies
> > of the message.
> > ? ? ? ? ? ? ? ?The sender's company reserves the right
> > to monitor all
> > e-mail communications through their networks.
> >
> >
> >
> > ---------------------------------------------------------------------
> > ? ? ? ? ? ? ? ?The official User-To-User support forum
> > of the Apache
> > HTTP Server Project.
> > ? ? ? ? ? ? ? ?See
> > <URL:http://httpd.apache.org/userslist.html> for
> > more info.
> > ? ? ? ? ? ? ? ?To unsubscribe, e-mail:
> > users-unsubscribe@httpd.apache.org
> > ? ? ? ? ? ? ? ?? " ? from the digest:
> > users-digest-unsubscribe@httpd.apache.org
> > ? ? ? ? ? ? ? ?For additional commands, e-mail:
> > users-help@httpd.apache.org
> >
> >
> >
> >
> >
> >
> > ---------------------------------------------------------------------
> > The official User-To-User support forum of the Apache
> > HTTP Server Project.
> > See <URL:http://httpd.apache.org/userslist.html> for
> > more info.
> > To unsubscribe, e-mail:
> > users-unsubscribe@httpd.apache.org
> > ? " ? from the digest:
> > users-digest-unsubscribe@httpd.apache.org
> > For additional commands, e-mail:
> > users-help@httpd.apache.org
> >
> >
> >
> >
> >
> > ---------------------------------------------------------------------
> > The official User-To-User support forum of the Apache HTTP Server
> > Project. See <URL:http://httpd.apache.org/userslist.html> for more info.
> > To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> > " from the digest: users-digest-unsubscribe@httpd.apache.org
> > For additional commands, e-mail: users-help@httpd.apache.org
>
---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
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Re: [users@httpd] Load balancer sticky session problem
Posted by Onur Ağın <on...@gmail.com>.
Yes, the cookie is JSESSIONID,
In the server response, Set-Cookie:JSESSIONID=xxxxx;path=xxx;
I am using a tomcat 6.0 server.
On Tue, Nov 24, 2009 at 2:39 PM, Boyle Owen <Ow...@six-group.com>wrote:
> Forget the failover thing - Let's get back to your original problem
> which is stickysession not working.
>
> Have you checked you have the session cookie in the request and that
> it's called JSESSIONID?
> Check http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypass for
> details on how it is supposed to work.
>
> Rgds,
> Owen Boyle
> Disclaimer: Any disclaimer attached to this message may be ignored.
> ________________________________
>
> From: Onur Agin [mailto:onuragin@gmail.com]
> Sent: Tuesday, November 24, 2009 1:23 PM
> To: users@httpd.apache.org
> Subject: Re: [users@httpd] Load balancer sticky session problem
>
>
> What if I have a session clustering mechanism which works
> asynchronously, so if host A fails, then the sessions will be replicated
> to server B in several seconds, and if the session is sticky and request
> is moved to B, only request that will come on that second will fail. But
> if the load balancer is not sticky, it won't work since the sessions are
> not replicated realtime
>
> On Tue, Nov 24, 2009 at 2:16 PM, Boyle Owen
> <Ow...@six-group.com> wrote:
>
>
>
>
>
>
> > ? ? ? "The downside is that if the desired server is
> really down, the
> request
> > ? ? ? will eventually fail."
> >
> > ? ? ? I wouldn't want this, the reason why I am using
> a load balancer
> is to have high availability,
> > not just to balance a load.
> >
> > ? ? ? How can I overcome this?
> > ? ? ? Aren't there any alternatives?
>
>
>
> What do you imagine can happen? If you want sessions to
> be sticky then
> if a request has session ID that points to server-A, the
> request *must*
> go there. If server-A is unavailable, the request must
> wait.
>
> Alternatively, you can allow failover and then the
> request will go
> straight to server-B, but then it has the wrong session
> cookie.
>
> Session affinity and failover are mutually exclusive -
> there is no way
> round it.
>
>
> > ? ? ? Also what does it mean to be busy?
> > ? ? ? Currently I am using my pc to act as a load
> balancer in front of
> powerfull servers and there
> > is only one page request, how can it be busy?
>
>
> No idea. It's your server.. You posted that
> stickysession wasn't working
> and I posted back a possible explanation and something
> to try (did you?)
> Maybe it's not the problem - try it and see :-)
>
>
> Rgds,
> Owen Boyle
> Disclaimer: Any disclaimer attached to this message may
> be ignored.
>
>
>
>
> ? ? ? ?On Tue, Nov 24, 2009 at 12:27 PM, Boyle Owen
> <Ow...@six-group.com> wrote:
>
>
> ? ? ? ? ? ? ? ?Try adding "nofailover=On" to the Proxy
> tag, ie
>
>
> ? ? ? ? ? ? ? ?<Proxy balancer://ow1
> stickysession=JSESSIONID
> lbmethod=byrequests
>
> ? ? ? ? ? ? ? ?nofailover=On>
> ? ? ? ? ? ? ? ?...
>
> ? ? ? ? ? ? ? ?By default, if the desired balancer
> member is busy, the
> request will be
> ? ? ? ? ? ? ? ?routed to another one, even if the
> stickysession doesn't
> match (this is
> ? ? ? ? ? ? ? ?"failover"). To force apache to hold the
> request until
> the server is
> ? ? ? ? ? ? ? ?free again, you need to switch this off
> by switching ON
> "nofailover" (so
> ? ? ? ? ? ? ? ?switching OFF "failover" - confusing, eh?
> :-)
>
> ? ? ? ? ? ? ? ?The downside is that if the desired
> server is really
> down, the request
> ? ? ? ? ? ? ? ?will eventually fail.
>
> ? ? ? ? ? ? ? ?Rgds,
> ? ? ? ? ? ? ? ?Owen Boyle
> ? ? ? ? ? ? ? ?Disclaimer: Any disclaimer attached to
> this message may
> be ignored.
>
>
>
>
> ? ? ? ? ? ? ? ?________________________________
>
> ? ? ? ? ? ? ? ?? ? ? ?From: Onur Agin
> [mailto:onuragin@gmail.com]
> ? ? ? ? ? ? ? ?? ? ? ?Sent: Tuesday, November 24, 2009
> 11:05 AM
> ? ? ? ? ? ? ? ?? ? ? ?To: users@httpd.apache.org
> ? ? ? ? ? ? ? ?? ? ? ?Subject: [users@httpd] Load
> balancer sticky
> session problem
>
>
>
> ? ? ? ? ? ? ? ?? ? ? ?Hi,
>
> ? ? ? ? ? ? ? ?? ? ? ?With the configuration below,
> sticky sessions
> won't work...
> ? ? ? ? ? ? ? ?? ? ? ?I checked that both servers get
> the request with
> the same
> ? ? ? ? ? ? ? ?session IDs.
> ? ? ? ? ? ? ? ?? ? ? ?Any ideas?
>
>
> ? ? ? ? ? ? ? ?? ? ? ?<VirtualHost *:8001>
> ? ? ? ? ? ? ? ?? ? ? ?# Proxy
> ? ? ? ? ? ? ? ?? ? ? ?ProxyRequests Off
> ? ? ? ? ? ? ? ?? ? ? ?<Proxy *>
> ? ? ? ? ? ? ? ?? ? ? ???Order deny,allow
> ? ? ? ? ? ? ? ?? ? ? ???Allow from all
> ? ? ? ? ? ? ? ?? ? ? ?</Proxy>
> ? ? ? ? ? ? ? ?? ? ? ?<Proxy balancer://ow1
> stickysession=JSESSIONID
> ? ? ? ? ? ? ? ?lbmethod=byrequests>
> ? ? ? ? ? ? ? ?? ? ? ???BalancerMember
> http://10.xxx:7101
> ? ? ? ? ? ? ? ?? ? ? ???BalancerMember
> http://10.xxx:7102
> ? ? ? ? ? ? ? ?? ? ? ?</Proxy>
>
> ? ? ? ? ? ? ? ?? ? ? ?ProxyPass / balancer://ow1/
> ? ? ? ? ? ? ? ?? ? ? ?</VirtualHost>
>
> ? ? ? ? ? ? ? ?? ? ? ?<VirtualHost *:8002>
>
> ? ? ? ? ? ? ? ?? ? ? ?# Proxy
> ? ? ? ? ? ? ? ?? ? ? ?ProxyRequests Off
> ? ? ? ? ? ? ? ?? ? ? ?<Proxy *>
> ? ? ? ? ? ? ? ?? ? ? ???Order deny,allow
> ? ? ? ? ? ? ? ?? ? ? ???Allow from all
> ? ? ? ? ? ? ? ?? ? ? ?</Proxy>
> ? ? ? ? ? ? ? ?? ? ? ?<Proxy balancer://ow2
> stickysession=JSESSIONID
> ? ? ? ? ? ? ? ?lbmethod=byrequests>
> ? ? ? ? ? ? ? ?? ? ? ???BalancerMember
> http://10.xxx:7103
> ? ? ? ? ? ? ? ?? ? ? ???BalancerMember
> http://10.xxx:7104
> ? ? ? ? ? ? ? ?? ? ? ?</Proxy>
>
> ? ? ? ? ? ? ? ?? ? ? ?ProxyPass / balancer://ow2/
> ? ? ? ? ? ? ? ?? ? ? ?</VirtualHost>
>
>
> ? ? ? ? ? ? ? ?? ? ? ?Also my request header is:
>
> ? ? ? ? ? ? ? ?? ? ? ?GET
>
>
> /xxx/resources/org.apache.wicket.markup.html.WicketEventReference/wicket
> ? ? ? ? ? ? ?
> ?-event.js;jsessionid=76BF17CE24DB39AC8F6B3639BBA5727D
> HTTP/1.1
> ? ? ? ? ? ? ? ?? ? ? ?Accept: */*
> ? ? ? ? ? ? ? ?? ? ? ?Referer:
>
>
> http://10.xxx:8001/xxx/?class=texan.acq.ui.param.MERPARAM
> ? ? ? ? ? ? ? ?? ? ? ?Accept-Language: en-us
> ? ? ? ? ? ? ? ?? ? ? ?Accept-Encoding: gzip, deflate
> ? ? ? ? ? ? ? ?? ? ? ?User-Agent: Mozilla/4.0
> (compatible; MSIE 6.0;
> Windows NT 5.1;
> ? ? ? ? ? ? ? ?SV1; .NET CLR 2.0.50727; MS-RTC LM 8;
> InfoPath.2)
> ? ? ? ? ? ? ? ?? ? ? ?Host: 10.xxx:8001
> ? ? ? ? ? ? ? ?? ? ? ?Connection: Keep-Alive
> ? ? ? ? ? ? ? ?? ? ? ?Cookie:
> JSESSIONID=76BF17CE24DB39AC8F6B3639BBA5727D
>
>
> ? ? ? ? ? ? ? ?This message is for the named person's
> use only. It may
> contain confidential, proprietary or legally privileged
> information. If
> you receive this message in error, please notify the
> sender urgently and
> then immediately delete the message and any copies of it
> from your
> system. Please also immediately destroy any hardcopies
> of the message.
> ? ? ? ? ? ? ? ?The sender's company reserves the right
> to monitor all
> e-mail communications through their networks.
>
>
>
> ---------------------------------------------------------------------
> ? ? ? ? ? ? ? ?The official User-To-User support forum
> of the Apache
> HTTP Server Project.
> ? ? ? ? ? ? ? ?See
> <URL:http://httpd.apache.org/userslist.html> for
> more info.
> ? ? ? ? ? ? ? ?To unsubscribe, e-mail:
> users-unsubscribe@httpd.apache.org
> ? ? ? ? ? ? ? ?? " ? from the digest:
> users-digest-unsubscribe@httpd.apache.org
> ? ? ? ? ? ? ? ?For additional commands, e-mail:
> users-help@httpd.apache.org
>
>
>
>
>
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache
> HTTP Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for
> more info.
> To unsubscribe, e-mail:
> users-unsubscribe@httpd.apache.org
> ? " ? from the digest:
> users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail:
> users-help@httpd.apache.org
>
>
>
>
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
RE: [users@httpd] Load balancer sticky session problem
Posted by Boyle Owen <Ow...@six-group.com>.
Forget the failover thing - Let's get back to your original problem
which is stickysession not working.
Have you checked you have the session cookie in the request and that
it's called JSESSIONID?
Check http://httpd.apache.org/docs/2.2/mod/mod_proxy.html#proxypass for
details on how it is supposed to work.
Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored.
________________________________
From: Onur Agin [mailto:onuragin@gmail.com]
Sent: Tuesday, November 24, 2009 1:23 PM
To: users@httpd.apache.org
Subject: Re: [users@httpd] Load balancer sticky session problem
What if I have a session clustering mechanism which works
asynchronously, so if host A fails, then the sessions will be replicated
to server B in several seconds, and if the session is sticky and request
is moved to B, only request that will come on that second will fail. But
if the load balancer is not sticky, it won't work since the sessions are
not replicated realtime
On Tue, Nov 24, 2009 at 2:16 PM, Boyle Owen
<Ow...@six-group.com> wrote:
> ? ? ? "The downside is that if the desired server is
really down, the
request
> ? ? ? will eventually fail."
>
> ? ? ? I wouldn't want this, the reason why I am using
a load balancer
is to have high availability,
> not just to balance a load.
>
> ? ? ? How can I overcome this?
> ? ? ? Aren't there any alternatives?
What do you imagine can happen? If you want sessions to
be sticky then
if a request has session ID that points to server-A, the
request *must*
go there. If server-A is unavailable, the request must
wait.
Alternatively, you can allow failover and then the
request will go
straight to server-B, but then it has the wrong session
cookie.
Session affinity and failover are mutually exclusive -
there is no way
round it.
> ? ? ? Also what does it mean to be busy?
> ? ? ? Currently I am using my pc to act as a load
balancer in front of
powerfull servers and there
> is only one page request, how can it be busy?
No idea. It's your server.. You posted that
stickysession wasn't working
and I posted back a possible explanation and something
to try (did you?)
Maybe it's not the problem - try it and see :-)
Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may
be ignored.
? ? ? ?On Tue, Nov 24, 2009 at 12:27 PM, Boyle Owen
<Ow...@six-group.com> wrote:
? ? ? ? ? ? ? ?Try adding "nofailover=On" to the Proxy
tag, ie
? ? ? ? ? ? ? ?<Proxy balancer://ow1
stickysession=JSESSIONID
lbmethod=byrequests
? ? ? ? ? ? ? ?nofailover=On>
? ? ? ? ? ? ? ?...
? ? ? ? ? ? ? ?By default, if the desired balancer
member is busy, the
request will be
? ? ? ? ? ? ? ?routed to another one, even if the
stickysession doesn't
match (this is
? ? ? ? ? ? ? ?"failover"). To force apache to hold the
request until
the server is
? ? ? ? ? ? ? ?free again, you need to switch this off
by switching ON
"nofailover" (so
? ? ? ? ? ? ? ?switching OFF "failover" - confusing, eh?
:-)
? ? ? ? ? ? ? ?The downside is that if the desired
server is really
down, the request
? ? ? ? ? ? ? ?will eventually fail.
? ? ? ? ? ? ? ?Rgds,
? ? ? ? ? ? ? ?Owen Boyle
? ? ? ? ? ? ? ?Disclaimer: Any disclaimer attached to
this message may
be ignored.
? ? ? ? ? ? ? ?________________________________
? ? ? ? ? ? ? ?? ? ? ?From: Onur Agin
[mailto:onuragin@gmail.com]
? ? ? ? ? ? ? ?? ? ? ?Sent: Tuesday, November 24, 2009
11:05 AM
? ? ? ? ? ? ? ?? ? ? ?To: users@httpd.apache.org
? ? ? ? ? ? ? ?? ? ? ?Subject: [users@httpd] Load
balancer sticky
session problem
? ? ? ? ? ? ? ?? ? ? ?Hi,
? ? ? ? ? ? ? ?? ? ? ?With the configuration below,
sticky sessions
won't work...
? ? ? ? ? ? ? ?? ? ? ?I checked that both servers get
the request with
the same
? ? ? ? ? ? ? ?session IDs.
? ? ? ? ? ? ? ?? ? ? ?Any ideas?
? ? ? ? ? ? ? ?? ? ? ?<VirtualHost *:8001>
? ? ? ? ? ? ? ?? ? ? ?# Proxy
? ? ? ? ? ? ? ?? ? ? ?ProxyRequests Off
? ? ? ? ? ? ? ?? ? ? ?<Proxy *>
? ? ? ? ? ? ? ?? ? ? ???Order deny,allow
? ? ? ? ? ? ? ?? ? ? ???Allow from all
? ? ? ? ? ? ? ?? ? ? ?</Proxy>
? ? ? ? ? ? ? ?? ? ? ?<Proxy balancer://ow1
stickysession=JSESSIONID
? ? ? ? ? ? ? ?lbmethod=byrequests>
? ? ? ? ? ? ? ?? ? ? ???BalancerMember
http://10.xxx:7101
? ? ? ? ? ? ? ?? ? ? ???BalancerMember
http://10.xxx:7102
? ? ? ? ? ? ? ?? ? ? ?</Proxy>
? ? ? ? ? ? ? ?? ? ? ?ProxyPass / balancer://ow1/
? ? ? ? ? ? ? ?? ? ? ?</VirtualHost>
? ? ? ? ? ? ? ?? ? ? ?<VirtualHost *:8002>
? ? ? ? ? ? ? ?? ? ? ?# Proxy
? ? ? ? ? ? ? ?? ? ? ?ProxyRequests Off
? ? ? ? ? ? ? ?? ? ? ?<Proxy *>
? ? ? ? ? ? ? ?? ? ? ???Order deny,allow
? ? ? ? ? ? ? ?? ? ? ???Allow from all
? ? ? ? ? ? ? ?? ? ? ?</Proxy>
? ? ? ? ? ? ? ?? ? ? ?<Proxy balancer://ow2
stickysession=JSESSIONID
? ? ? ? ? ? ? ?lbmethod=byrequests>
? ? ? ? ? ? ? ?? ? ? ???BalancerMember
http://10.xxx:7103
? ? ? ? ? ? ? ?? ? ? ???BalancerMember
http://10.xxx:7104
? ? ? ? ? ? ? ?? ? ? ?</Proxy>
? ? ? ? ? ? ? ?? ? ? ?ProxyPass / balancer://ow2/
? ? ? ? ? ? ? ?? ? ? ?</VirtualHost>
? ? ? ? ? ? ? ?? ? ? ?Also my request header is:
? ? ? ? ? ? ? ?? ? ? ?GET
/xxx/resources/org.apache.wicket.markup.html.WicketEventReference/wicket
? ? ? ? ? ? ?
?-event.js;jsessionid=76BF17CE24DB39AC8F6B3639BBA5727D
HTTP/1.1
? ? ? ? ? ? ? ?? ? ? ?Accept: */*
? ? ? ? ? ? ? ?? ? ? ?Referer:
http://10.xxx:8001/xxx/?class=texan.acq.ui.param.MERPARAM
? ? ? ? ? ? ? ?? ? ? ?Accept-Language: en-us
? ? ? ? ? ? ? ?? ? ? ?Accept-Encoding: gzip, deflate
? ? ? ? ? ? ? ?? ? ? ?User-Agent: Mozilla/4.0
(compatible; MSIE 6.0;
Windows NT 5.1;
? ? ? ? ? ? ? ?SV1; .NET CLR 2.0.50727; MS-RTC LM 8;
InfoPath.2)
? ? ? ? ? ? ? ?? ? ? ?Host: 10.xxx:8001
? ? ? ? ? ? ? ?? ? ? ?Connection: Keep-Alive
? ? ? ? ? ? ? ?? ? ? ?Cookie:
JSESSIONID=76BF17CE24DB39AC8F6B3639BBA5727D
? ? ? ? ? ? ? ?This message is for the named person's
use only. It may
contain confidential, proprietary or legally privileged
information. If
you receive this message in error, please notify the
sender urgently and
then immediately delete the message and any copies of it
from your
system. Please also immediately destroy any hardcopies
of the message.
? ? ? ? ? ? ? ?The sender's company reserves the right
to monitor all
e-mail communications through their networks.
---------------------------------------------------------------------
? ? ? ? ? ? ? ?The official User-To-User support forum
of the Apache
HTTP Server Project.
? ? ? ? ? ? ? ?See
<URL:http://httpd.apache.org/userslist.html> for
more info.
? ? ? ? ? ? ? ?To unsubscribe, e-mail:
users-unsubscribe@httpd.apache.org
? ? ? ? ? ? ? ?? " ? from the digest:
users-digest-unsubscribe@httpd.apache.org
? ? ? ? ? ? ? ?For additional commands, e-mail:
users-help@httpd.apache.org
---------------------------------------------------------------------
The official User-To-User support forum of the Apache
HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for
more info.
To unsubscribe, e-mail:
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? " ? from the digest:
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For additional commands, e-mail:
users-help@httpd.apache.org
---------------------------------------------------------------------
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See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org
Re: [users@httpd] Load balancer sticky session problem
Posted by Onur Ağın <on...@gmail.com>.
What if I have a session clustering mechanism which works asynchronously, so
if host A fails, then the sessions will be replicated to server B in several
seconds, and if the session is sticky and request is moved to B, only
request that will come on that second will fail. But if the load balancer is
not sticky, it won't work since the sessions are not replicated realtime
On Tue, Nov 24, 2009 at 2:16 PM, Boyle Owen <Ow...@six-group.com>wrote:
>
>
>
>
> > "The downside is that if the desired server is really down, the
> request
> > will eventually fail."
> >
> > I wouldn't want this, the reason why I am using a load balancer
> is to have high availability,
> > not just to balance a load.
> >
> > How can I overcome this?
> > Aren't there any alternatives?
>
>
> What do you imagine can happen? If you want sessions to be sticky then
> if a request has session ID that points to server-A, the request *must*
> go there. If server-A is unavailable, the request must wait.
>
> Alternatively, you can allow failover and then the request will go
> straight to server-B, but then it has the wrong session cookie.
>
> Session affinity and failover are mutually exclusive - there is no way
> round it.
>
> > Also what does it mean to be busy?
> > Currently I am using my pc to act as a load balancer in front of
> powerfull servers and there
> > is only one page request, how can it be busy?
>
> No idea. It's your server.. You posted that stickysession wasn't working
> and I posted back a possible explanation and something to try (did you?)
> Maybe it's not the problem - try it and see :-)
>
> Rgds,
> Owen Boyle
> Disclaimer: Any disclaimer attached to this message may be ignored.
>
>
>
>
> On Tue, Nov 24, 2009 at 12:27 PM, Boyle Owen
> <Ow...@six-group.com> wrote:
>
>
> Try adding "nofailover=On" to the Proxy tag, ie
>
>
> <Proxy balancer://ow1 stickysession=JSESSIONID
> lbmethod=byrequests
>
> nofailover=On>
> ...
>
> By default, if the desired balancer member is busy, the
> request will be
> routed to another one, even if the stickysession doesn't
> match (this is
> "failover"). To force apache to hold the request until
> the server is
> free again, you need to switch this off by switching ON
> "nofailover" (so
> switching OFF "failover" - confusing, eh? :-)
>
> The downside is that if the desired server is really
> down, the request
> will eventually fail.
>
> Rgds,
> Owen Boyle
> Disclaimer: Any disclaimer attached to this message may
> be ignored.
>
>
>
>
> ________________________________
>
> ? ? ? ?From: Onur Agin [mailto:onuragin@gmail.com]
> ? ? ? ?Sent: Tuesday, November 24, 2009 11:05 AM
> ? ? ? ?To: users@httpd.apache.org
> ? ? ? ?Subject: [users@httpd] Load balancer sticky
> session problem
>
>
>
> ? ? ? ?Hi,
>
> ? ? ? ?With the configuration below, sticky sessions
> won't work...
> ? ? ? ?I checked that both servers get the request with
> the same
> session IDs.
> ? ? ? ?Any ideas?
>
>
> ? ? ? ?<VirtualHost *:8001>
> ? ? ? ?# Proxy
> ? ? ? ?ProxyRequests Off
> ? ? ? ?<Proxy *>
> ? ? ? ???Order deny,allow
> ? ? ? ???Allow from all
> ? ? ? ?</Proxy>
> ? ? ? ?<Proxy balancer://ow1 stickysession=JSESSIONID
> lbmethod=byrequests>
> ? ? ? ???BalancerMember http://10.xxx:7101
> ? ? ? ???BalancerMember http://10.xxx:7102
> ? ? ? ?</Proxy>
>
> ? ? ? ?ProxyPass / balancer://ow1/
> ? ? ? ?</VirtualHost>
>
> ? ? ? ?<VirtualHost *:8002>
>
> ? ? ? ?# Proxy
> ? ? ? ?ProxyRequests Off
> ? ? ? ?<Proxy *>
> ? ? ? ???Order deny,allow
> ? ? ? ???Allow from all
> ? ? ? ?</Proxy>
> ? ? ? ?<Proxy balancer://ow2 stickysession=JSESSIONID
> lbmethod=byrequests>
> ? ? ? ???BalancerMember http://10.xxx:7103
> ? ? ? ???BalancerMember http://10.xxx:7104
> ? ? ? ?</Proxy>
>
> ? ? ? ?ProxyPass / balancer://ow2/
> ? ? ? ?</VirtualHost>
>
>
> ? ? ? ?Also my request header is:
>
> ? ? ? ?GET
>
> /xxx/resources/org.apache.wicket.markup.html.WicketEventReference/wicket
> -event.js;jsessionid=76BF17CE24DB39AC8F6B3639BBA5727D
> HTTP/1.1
> ? ? ? ?Accept: */*
> ? ? ? ?Referer:
>
> http://10.xxx:8001/xxx/?class=texan.acq.ui.param.MERPARAM
> ? ? ? ?Accept-Language: en-us
> ? ? ? ?Accept-Encoding: gzip, deflate
> ? ? ? ?User-Agent: Mozilla/4.0 (compatible; MSIE 6.0;
> Windows NT 5.1;
> SV1; .NET CLR 2.0.50727; MS-RTC LM 8; InfoPath.2)
> ? ? ? ?Host: 10.xxx:8001
> ? ? ? ?Connection: Keep-Alive
> ? ? ? ?Cookie:
> JSESSIONID=76BF17CE24DB39AC8F6B3639BBA5727D
>
>
> This message is for the named person's use only. It may
> contain confidential, proprietary or legally privileged information. If
> you receive this message in error, please notify the sender urgently and
> then immediately delete the message and any copies of it from your
> system. Please also immediately destroy any hardcopies of the message.
> The sender's company reserves the right to monitor all
> e-mail communications through their networks.
>
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache
> HTTP Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for
> more info.
> To unsubscribe, e-mail:
> users-unsubscribe@httpd.apache.org
> ? " ? from the digest:
> users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail:
> users-help@httpd.apache.org
>
>
>
>
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
RE: [users@httpd] Load balancer sticky session problem
Posted by Boyle Owen <Ow...@six-group.com>.
> "The downside is that if the desired server is really down, the
request
> will eventually fail."
>
> I wouldn't want this, the reason why I am using a load balancer
is to have high availability,
> not just to balance a load.
>
> How can I overcome this?
> Aren't there any alternatives?
What do you imagine can happen? If you want sessions to be sticky then
if a request has session ID that points to server-A, the request *must*
go there. If server-A is unavailable, the request must wait.
Alternatively, you can allow failover and then the request will go
straight to server-B, but then it has the wrong session cookie.
Session affinity and failover are mutually exclusive - there is no way
round it.
> Also what does it mean to be busy?
> Currently I am using my pc to act as a load balancer in front of
powerfull servers and there
> is only one page request, how can it be busy?
No idea. It's your server.. You posted that stickysession wasn't working
and I posted back a possible explanation and something to try (did you?)
Maybe it's not the problem - try it and see :-)
Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored.
On Tue, Nov 24, 2009 at 12:27 PM, Boyle Owen
<Ow...@six-group.com> wrote:
Try adding "nofailover=On" to the Proxy tag, ie
<Proxy balancer://ow1 stickysession=JSESSIONID
lbmethod=byrequests
nofailover=On>
...
By default, if the desired balancer member is busy, the
request will be
routed to another one, even if the stickysession doesn't
match (this is
"failover"). To force apache to hold the request until
the server is
free again, you need to switch this off by switching ON
"nofailover" (so
switching OFF "failover" - confusing, eh? :-)
The downside is that if the desired server is really
down, the request
will eventually fail.
Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may
be ignored.
________________________________
? ? ? ?From: Onur Agin [mailto:onuragin@gmail.com]
? ? ? ?Sent: Tuesday, November 24, 2009 11:05 AM
? ? ? ?To: users@httpd.apache.org
? ? ? ?Subject: [users@httpd] Load balancer sticky
session problem
? ? ? ?Hi,
? ? ? ?With the configuration below, sticky sessions
won't work...
? ? ? ?I checked that both servers get the request with
the same
session IDs.
? ? ? ?Any ideas?
? ? ? ?<VirtualHost *:8001>
? ? ? ?# Proxy
? ? ? ?ProxyRequests Off
? ? ? ?<Proxy *>
? ? ? ???Order deny,allow
? ? ? ???Allow from all
? ? ? ?</Proxy>
? ? ? ?<Proxy balancer://ow1 stickysession=JSESSIONID
lbmethod=byrequests>
? ? ? ???BalancerMember http://10.xxx:7101
? ? ? ???BalancerMember http://10.xxx:7102
? ? ? ?</Proxy>
? ? ? ?ProxyPass / balancer://ow1/
? ? ? ?</VirtualHost>
? ? ? ?<VirtualHost *:8002>
? ? ? ?# Proxy
? ? ? ?ProxyRequests Off
? ? ? ?<Proxy *>
? ? ? ???Order deny,allow
? ? ? ???Allow from all
? ? ? ?</Proxy>
? ? ? ?<Proxy balancer://ow2 stickysession=JSESSIONID
lbmethod=byrequests>
? ? ? ???BalancerMember http://10.xxx:7103
? ? ? ???BalancerMember http://10.xxx:7104
? ? ? ?</Proxy>
? ? ? ?ProxyPass / balancer://ow2/
? ? ? ?</VirtualHost>
? ? ? ?Also my request header is:
? ? ? ?GET
/xxx/resources/org.apache.wicket.markup.html.WicketEventReference/wicket
-event.js;jsessionid=76BF17CE24DB39AC8F6B3639BBA5727D
HTTP/1.1
? ? ? ?Accept: */*
? ? ? ?Referer:
http://10.xxx:8001/xxx/?class=texan.acq.ui.param.MERPARAM
? ? ? ?Accept-Language: en-us
? ? ? ?Accept-Encoding: gzip, deflate
? ? ? ?User-Agent: Mozilla/4.0 (compatible; MSIE 6.0;
Windows NT 5.1;
SV1; .NET CLR 2.0.50727; MS-RTC LM 8; InfoPath.2)
? ? ? ?Host: 10.xxx:8001
? ? ? ?Connection: Keep-Alive
? ? ? ?Cookie:
JSESSIONID=76BF17CE24DB39AC8F6B3639BBA5727D
This message is for the named person's use only. It may
contain confidential, proprietary or legally privileged information. If
you receive this message in error, please notify the sender urgently and
then immediately delete the message and any copies of it from your
system. Please also immediately destroy any hardcopies of the message.
The sender's company reserves the right to monitor all
e-mail communications through their networks.
---------------------------------------------------------------------
The official User-To-User support forum of the Apache
HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for
more info.
To unsubscribe, e-mail:
users-unsubscribe@httpd.apache.org
? " ? from the digest:
users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail:
users-help@httpd.apache.org
---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
See <URL:http://httpd.apache.org/userslist.html> for more info.
To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
" from the digest: users-digest-unsubscribe@httpd.apache.org
For additional commands, e-mail: users-help@httpd.apache.org
Re: [users@httpd] Load balancer sticky session problem
Posted by Onur Ağın <on...@gmail.com>.
"The downside is that if the desired server is really down, the request
will eventually fail."
I wouldn't want this, the reason why I am using a load balancer is to have
high availability, not just to balance a load.
How can I overcome this?
Aren't there any alternatives?
Also what does it mean to be busy?
Currently I am using my pc to act as a load balancer in front of powerfull
servers and there is only one page request, how can it be busy?
On Tue, Nov 24, 2009 at 12:27 PM, Boyle Owen <Ow...@six-group.com>wrote:
> Try adding "nofailover=On" to the Proxy tag, ie
>
> <Proxy balancer://ow1 stickysession=JSESSIONID lbmethod=byrequests
> nofailover=On>
> ...
>
> By default, if the desired balancer member is busy, the request will be
> routed to another one, even if the stickysession doesn't match (this is
> "failover"). To force apache to hold the request until the server is
> free again, you need to switch this off by switching ON "nofailover" (so
> switching OFF "failover" - confusing, eh? :-)
>
> The downside is that if the desired server is really down, the request
> will eventually fail.
>
> Rgds,
> Owen Boyle
> Disclaimer: Any disclaimer attached to this message may be ignored.
>
>
>
>
> ________________________________
>
> From: Onur Agin [mailto:onuragin@gmail.com]
> Sent: Tuesday, November 24, 2009 11:05 AM
> To: users@httpd.apache.org
> Subject: [users@httpd] Load balancer sticky session problem
>
>
> Hi,
>
> With the configuration below, sticky sessions won't work...
> I checked that both servers get the request with the same
> session IDs.
> Any ideas?
>
>
> <VirtualHost *:8001>
> # Proxy
> ProxyRequests Off
> <Proxy *>
> ??Order deny,allow
> ??Allow from all
> </Proxy>
> <Proxy balancer://ow1 stickysession=JSESSIONID
> lbmethod=byrequests>
> ??BalancerMember http://10.xxx:7101
> ??BalancerMember http://10.xxx:7102
> </Proxy>
>
> ProxyPass / balancer://ow1/
> </VirtualHost>
>
> <VirtualHost *:8002>
>
> # Proxy
> ProxyRequests Off
> <Proxy *>
> ??Order deny,allow
> ??Allow from all
> </Proxy>
> <Proxy balancer://ow2 stickysession=JSESSIONID
> lbmethod=byrequests>
> ??BalancerMember http://10.xxx:7103
> ??BalancerMember http://10.xxx:7104
> </Proxy>
>
> ProxyPass / balancer://ow2/
> </VirtualHost>
>
>
> Also my request header is:
>
> GET
> /xxx/resources/org.apache.wicket.markup.html.WicketEventReference/wicket
> -event.js;jsessionid=76BF17CE24DB39AC8F6B3639BBA5727D HTTP/1.1
> Accept: */*
> Referer:
> http://10.xxx:8001/xxx/?class=texan.acq.ui.param.MERPARAM
> Accept-Language: en-us
> Accept-Encoding: gzip, deflate
> User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
> SV1; .NET CLR 2.0.50727; MS-RTC LM 8; InfoPath.2)
> Host: 10.xxx:8001
> Connection: Keep-Alive
> Cookie: JSESSIONID=76BF17CE24DB39AC8F6B3639BBA5727D
>
> This message is for the named person's use only. It may contain
> confidential, proprietary or legally privileged information. If you receive
> this message in error, please notify the sender urgently and then
> immediately delete the message and any copies of it from your system. Please
> also immediately destroy any hardcopies of the message.
> The sender's company reserves the right to monitor all e-mail
> communications through their networks.
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server Project.
> See <URL:http://httpd.apache.org/userslist.html> for more info.
> To unsubscribe, e-mail: users-unsubscribe@httpd.apache.org
> " from the digest: users-digest-unsubscribe@httpd.apache.org
> For additional commands, e-mail: users-help@httpd.apache.org
>
>
RE: [users@httpd] Load balancer sticky session problem
Posted by Boyle Owen <Ow...@six-group.com>.
Try adding "nofailover=On" to the Proxy tag, ie
<Proxy balancer://ow1 stickysession=JSESSIONID lbmethod=byrequests
nofailover=On>
...
By default, if the desired balancer member is busy, the request will be
routed to another one, even if the stickysession doesn't match (this is
"failover"). To force apache to hold the request until the server is
free again, you need to switch this off by switching ON "nofailover" (so
switching OFF "failover" - confusing, eh? :-)
The downside is that if the desired server is really down, the request
will eventually fail.
Rgds,
Owen Boyle
Disclaimer: Any disclaimer attached to this message may be ignored.
________________________________
From: Onur Agin [mailto:onuragin@gmail.com]
Sent: Tuesday, November 24, 2009 11:05 AM
To: users@httpd.apache.org
Subject: [users@httpd] Load balancer sticky session problem
Hi,
With the configuration below, sticky sessions won't work...
I checked that both servers get the request with the same
session IDs.
Any ideas?
<VirtualHost *:8001>
# Proxy
ProxyRequests Off
<Proxy *>
??Order deny,allow
??Allow from all
</Proxy>
<Proxy balancer://ow1 stickysession=JSESSIONID
lbmethod=byrequests>
??BalancerMember http://10.xxx:7101
??BalancerMember http://10.xxx:7102
</Proxy>
ProxyPass / balancer://ow1/
</VirtualHost>
<VirtualHost *:8002>
# Proxy
ProxyRequests Off
<Proxy *>
??Order deny,allow
??Allow from all
</Proxy>
<Proxy balancer://ow2 stickysession=JSESSIONID
lbmethod=byrequests>
??BalancerMember http://10.xxx:7103
??BalancerMember http://10.xxx:7104
</Proxy>
ProxyPass / balancer://ow2/
</VirtualHost>
Also my request header is:
GET
/xxx/resources/org.apache.wicket.markup.html.WicketEventReference/wicket
-event.js;jsessionid=76BF17CE24DB39AC8F6B3639BBA5727D HTTP/1.1
Accept: */*
Referer:
http://10.xxx:8001/xxx/?class=texan.acq.ui.param.MERPARAM
Accept-Language: en-us
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
SV1; .NET CLR 2.0.50727; MS-RTC LM 8; InfoPath.2)
Host: 10.xxx:8001
Connection: Keep-Alive
Cookie: JSESSIONID=76BF17CE24DB39AC8F6B3639BBA5727D
This message is for the named person's use only. It may contain confidential, proprietary or legally privileged information. If you receive this message in error, please notify the sender urgently and then immediately delete the message and any copies of it from your system. Please also immediately destroy any hardcopies of the message.
The sender's company reserves the right to monitor all e-mail communications through their networks.
---------------------------------------------------------------------
The official User-To-User support forum of the Apache HTTP Server Project.
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