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Posted to users@tomcat.apache.org by Giancarlo Celli <gi...@flottaweb.com> on 2019/12/23 17:45:13 UTC
How to set apache load balancer for send request to 6 tomcat server
Hi,
I need to configure a load balancer with apache connector on a jelastic
server that redirects requests to 6 server workers with tomcat 7
installed.
Atteched you can find extract from httpd.conf and workers.properties.
I need to send single request to tomcat server individually, so I set
sticky_session to 0.
Could you tell me if parameters are configured correctly?
Is the collector able to handle all requests?
Could you give me some further advice?
Each tomcat server is configured with the following parameters:
<Connector port="80" protocol="HTTP/1.1"
maxThreads="400"
connectionTimeout="20000"
redirectPort="8443" />
The balancer has the following configuration:
Server version: Apache/2.4.39 (codeit)
Server built: Apr 3 2019 18:54:14
Architecture: 64-bit
Server MPM: event
threaded: yes (fixed thread count)
forked: yes (variable process count)
Thanks.
Best regards.
Re: How to set apache load balancer for send request to 6 tomcat server
Posted by Zahid Rahman <za...@gmail.com>.
Your home page is in Italian
https://www.flottaweb.com/en/
While your login page is in English
https://www.flottaweb.com/en/login/
On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, <gi...@flottaweb.com>
wrote:
> Hi,
> I need to configure a load balancer with apache connector on a jelastic
> server that redirects requests to 6 server workers with tomcat 7 installed.
> Atteched you can find extract from httpd.conf and workers.properties.
> I need to send single request to tomcat server individually, so I set
> sticky_session to 0.
> Could you tell me if parameters are configured correctly?
> Is the collector able to handle all requests?
> Could you give me some further advice?
>
> Each tomcat server is configured with the following parameters:
>
> <Connector port="80" protocol="HTTP/1.1"
> maxThreads="400"
> connectionTimeout="20000"
> redirectPort="8443" />
>
> The balancer has the following configuration:
> Server version: Apache/2.4.39 (codeit)
> Server built: Apr 3 2019 18:54:14
> Architecture: 64-bit
> Server MPM: event
> threaded: yes (fixed thread count)
> forked: yes (variable process count)
>
>
> Thanks.
> Best regards.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
Re: [OT] Re: How to set apache load balancer for send request to 6
tomcat server
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Zahid,
On 12/27/19 10:33, Zahid Rahman wrote:
> Good, please expand
Please ask a separate wquestion on the list so we don't hijack this
thread.
- -chris
> On Fri, 27 Dec 2019, 15:27 Christopher Schultz, <
> chris@christopherschultz.net> wrote:
>
> Zahid,
>
> On 12/23/19 15:19, Zahid Rahman wrote:
>>>> If your backend tomcat servers are running on different
>>>> physical machines therefore with different ip addresses then
>>>> there is nothing wrong with each backend tomcat server
>>>> listening on same port (80) of each machine. Further to
>>>> mod_jk worker properties file redirection.
>>>>
>>>> It is pointless in having multiple tomcat instances running
>>>> on same machine , because the kernel will slice and share
>>>> resources as per priority level setting of OS.
>
> I disagree. There are use-cases for running multiple Tomcat
> instances on the same machine.
>
>>>> If you don't have heavy user activity expectations then
>>>> this excercise is pointless.
>
> ?
>
> -chris
>
>>>> On Mon, 23 Dec 2019, 17:45 Giancarlo Celli,
>>>> <gi...@flottaweb.com> wrote:
>>>>
>>>>> Hi, I need to configure a load balancer with apache
>>>>> connector on a jelastic server that redirects requests to 6
>>>>> server workers with tomcat 7 installed. Atteched you can
>>>>> find extract from httpd.conf and workers.properties. I need
>>>>> to send single request to tomcat server individually, so I
>>>>> set sticky_session to 0. Could you tell me if parameters
>>>>> are configured correctly? Is the collector able to handle
>>>>> all requests? Could you give me some further advice?
>>>>>
>>>>> Each tomcat server is configured with the following
>>>>> parameters:
>>>>>
>>>>> <Connector port="80" protocol="HTTP/1.1" maxThreads="400"
>>>>> connectionTimeout="20000" redirectPort="8443" />
>>>>>
>>>>> The balancer has the following configuration: Server
>>>>> version: Apache/2.4.39 (codeit) Server built: Apr 3 2019
>>>>> 18:54:14 Architecture: 64-bit Server MPM: event
>>>>> threaded: yes (fixed thread count) forked: yes
>>>>> (variable process count)
>>>>>
>>>>>
>>>>> Thanks. Best regards.
>>>>>
>>>>>
>>>>> ------------------------------------------------------------------
- ---
>>>>>
>>>>>
>
>>>>>
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>>>>> For additional commands, e-mail:
>>>>> users-help@tomcat.apache.org
>>>>
>>
>> ---------------------------------------------------------------------
>>
>>
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>>
>
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Re: [OT] Re: How to set apache load balancer for send request to 6
tomcat server
Posted by Zahid Rahman <za...@gmail.com>.
Good, please expand
On Fri, 27 Dec 2019, 15:27 Christopher Schultz, <
chris@christopherschultz.net> wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Zahid,
>
> On 12/23/19 15:19, Zahid Rahman wrote:
> > If your backend tomcat servers are running on different physical
> > machines therefore with different ip addresses then there is
> > nothing wrong with each backend tomcat server listening on same
> > port (80) of each machine. Further to mod_jk worker properties file
> > redirection.
> >
> > It is pointless in having multiple tomcat instances running on same
> > machine , because the kernel will slice and share resources as per
> > priority level setting of OS.
>
> I disagree. There are use-cases for running multiple Tomcat instances
> on the same machine.
>
> > If you don't have heavy user activity expectations then this
> > excercise is pointless.
>
> ?
>
> - -chris
>
> > On Mon, 23 Dec 2019, 17:45 Giancarlo Celli,
> > <gi...@flottaweb.com> wrote:
> >
> >> Hi, I need to configure a load balancer with apache connector on
> >> a jelastic server that redirects requests to 6 server workers
> >> with tomcat 7 installed. Atteched you can find extract from
> >> httpd.conf and workers.properties. I need to send single request
> >> to tomcat server individually, so I set sticky_session to 0.
> >> Could you tell me if parameters are configured correctly? Is the
> >> collector able to handle all requests? Could you give me some
> >> further advice?
> >>
> >> Each tomcat server is configured with the following parameters:
> >>
> >> <Connector port="80" protocol="HTTP/1.1" maxThreads="400"
> >> connectionTimeout="20000" redirectPort="8443" />
> >>
> >> The balancer has the following configuration: Server version:
> >> Apache/2.4.39 (codeit) Server built: Apr 3 2019 18:54:14
> >> Architecture: 64-bit Server MPM: event threaded: yes
> >> (fixed thread count) forked: yes (variable process count)
> >>
> >>
> >> Thanks. Best regards.
> >>
> >>
> >> ---------------------------------------------------------------------
> >>
> >>
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> >> For additional commands, e-mail: users-help@tomcat.apache.org
> >
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> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
>
[OT] Re: How to set apache load balancer for send request to 6 tomcat
server
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Zahid,
On 12/23/19 15:19, Zahid Rahman wrote:
> If your backend tomcat servers are running on different physical
> machines therefore with different ip addresses then there is
> nothing wrong with each backend tomcat server listening on same
> port (80) of each machine. Further to mod_jk worker properties file
> redirection.
>
> It is pointless in having multiple tomcat instances running on same
> machine , because the kernel will slice and share resources as per
> priority level setting of OS.
I disagree. There are use-cases for running multiple Tomcat instances
on the same machine.
> If you don't have heavy user activity expectations then this
> excercise is pointless.
?
- -chris
> On Mon, 23 Dec 2019, 17:45 Giancarlo Celli,
> <gi...@flottaweb.com> wrote:
>
>> Hi, I need to configure a load balancer with apache connector on
>> a jelastic server that redirects requests to 6 server workers
>> with tomcat 7 installed. Atteched you can find extract from
>> httpd.conf and workers.properties. I need to send single request
>> to tomcat server individually, so I set sticky_session to 0.
>> Could you tell me if parameters are configured correctly? Is the
>> collector able to handle all requests? Could you give me some
>> further advice?
>>
>> Each tomcat server is configured with the following parameters:
>>
>> <Connector port="80" protocol="HTTP/1.1" maxThreads="400"
>> connectionTimeout="20000" redirectPort="8443" />
>>
>> The balancer has the following configuration: Server version:
>> Apache/2.4.39 (codeit) Server built: Apr 3 2019 18:54:14
>> Architecture: 64-bit Server MPM: event threaded: yes
>> (fixed thread count) forked: yes (variable process count)
>>
>>
>> Thanks. Best regards.
>>
>>
>> ---------------------------------------------------------------------
>>
>>
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>
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Re: How to set apache load balancer for send request to 6 tomcat server
Posted by Zahid Rahman <za...@gmail.com>.
If your backend tomcat servers are running on different physical machines
therefore with different ip addresses then there is nothing wrong with each
backend tomcat server listening on same port (80) of each machine. Further
to mod_jk worker properties file redirection.
It is pointless in having multiple tomcat instances running on same machine
, because the kernel will slice and share resources as per priority level
setting of OS.
If you don't have heavy user activity expectations then this excercise is
pointless.
On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, <gi...@flottaweb.com>
wrote:
> Hi,
> I need to configure a load balancer with apache connector on a jelastic
> server that redirects requests to 6 server workers with tomcat 7 installed.
> Atteched you can find extract from httpd.conf and workers.properties.
> I need to send single request to tomcat server individually, so I set
> sticky_session to 0.
> Could you tell me if parameters are configured correctly?
> Is the collector able to handle all requests?
> Could you give me some further advice?
>
> Each tomcat server is configured with the following parameters:
>
> <Connector port="80" protocol="HTTP/1.1"
> maxThreads="400"
> connectionTimeout="20000"
> redirectPort="8443" />
>
> The balancer has the following configuration:
> Server version: Apache/2.4.39 (codeit)
> Server built: Apr 3 2019 18:54:14
> Architecture: 64-bit
> Server MPM: event
> threaded: yes (fixed thread count)
> forked: yes (variable process count)
>
>
> Thanks.
> Best regards.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
Re: Re[2]: How to set apache load balancer for send request to 6
tomcat server
Posted by Zahid Rahman <za...@gmail.com>.
This is what a typical workers.properties file look like.this is not same
as your configuration
*Workers properties*
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
worker.list=balancer,status
worker.tomcat1.type=ajp13
worker.tomcat1.port=8009
worker.tomcat1.host=localhost
worker.tomcat2.type=ajp13
worker.tomcat2.port=8010
worker.tomcat2.host=localhost
worker.tomcat3.type=ajp13
worker.tomcat3.port=8011
worker.tomcat3.host=localhost
worker.balancer.type=lb
worker.balancer.balance_workers=tomcat1,tomcat2,tomcat3
worker.status.type=status
On Tue, 24 Dec 2019, 09:17 Giancarlo Celli, <gi...@flottaweb.com>
wrote:
> Thanks for the reply.
> More than anything else my question is to know if the configuration
> parameters of the various threads, connections, etc. they are set up well
> or if they could somehow down the service.
> And if you recommend any changes to optimize the service itself.
> He again attached the files with the extracts of the configurations
> Thanks.
> Best regards.
> Giancarlo
>
>
> ------ Messaggio originale ------
> Da: "Zahid Rahman" <za...@gmail.com>
> A: "Tomcat Users List" <us...@tomcat.apache.org>; "Giancarlo Celli" <
> giancarlo.celli@flottaweb.com>
> Inviato: 23/12/2019 23:56:41
> Oggetto: Re: How to set apache load balancer for send request to 6 tomcat
> server
>
> If you wish we can work the problem , piece by piece through logical
> construction of the solution.
>
>
>
> On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, <giancarlo.celli@flottaweb.com
> >
> wrote:
>
>
> Hi,
> I need to configure a load balancer with apache connector on a jelastic
> server that redirects requests to 6 server workers with tomcat 7 installed.
> Atteched you can find extract from httpd.conf and workers.properties.
> I need to send single request to tomcat server individually, so I set
> sticky_session to 0.
> Could you tell me if parameters are configured correctly?
> Is the collector able to handle all requests?
> Could you give me some further advice?
>
> Each tomcat server is configured with the following parameters:
>
> <Connector port="80" protocol="HTTP/1.1"
> maxThreads="400"
> connectionTimeout="20000"
> redirectPort="8443" />
>
> The balancer has the following configuration:
> Server version: Apache/2.4.39 (codeit)
> Server built: Apr 3 2019 18:54:14
> Architecture: 64-bit
> Server MPM: event
> threaded: yes (fixed thread count)
> forked: yes (variable process count)
>
>
> Thanks.
> Best regards.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
Re: Re[2]: How to set apache load balancer for send request to 6
tomcat server
Posted by Zahid Rahman <za...@gmail.com>.
Load balancing Algorithms
https://youtu.be/iqOTT7_7qXY
On Tue, 24 Dec 2019, 10:06 Zahid Rahman, <za...@gmail.com> wrote:
> There is a really great series of videos on this subject. He is
> referencing tomcat Apache website.
> If you speak German
>
> https://youtu.be/mQKZ8-EfBHU
>
> On Tue, 24 Dec 2019, 09:17 Giancarlo Celli, <gi...@flottaweb.com>
> wrote:
>
>> Thanks for the reply.
>> More than anything else my question is to know if the configuration
>> parameters of the various threads, connections, etc. they are set up well
>> or if they could somehow down the service.
>> And if you recommend any changes to optimize the service itself.
>> He again attached the files with the extracts of the configurations
>> Thanks.
>> Best regards.
>> Giancarlo
>>
>>
>> ------ Messaggio originale ------
>> Da: "Zahid Rahman" <za...@gmail.com>
>> A: "Tomcat Users List" <us...@tomcat.apache.org>; "Giancarlo Celli" <
>> giancarlo.celli@flottaweb.com>
>> Inviato: 23/12/2019 23:56:41
>> Oggetto: Re: How to set apache load balancer for send request to 6 tomcat
>> server
>>
>> If you wish we can work the problem , piece by piece through logical
>> construction of the solution.
>>
>>
>>
>> On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, <
>> giancarlo.celli@flottaweb.com>
>> wrote:
>>
>>
>> Hi,
>> I need to configure a load balancer with apache connector on a jelastic
>> server that redirects requests to 6 server workers with tomcat 7
>> installed.
>> Atteched you can find extract from httpd.conf and workers.properties.
>> I need to send single request to tomcat server individually, so I set
>> sticky_session to 0.
>> Could you tell me if parameters are configured correctly?
>> Is the collector able to handle all requests?
>> Could you give me some further advice?
>>
>> Each tomcat server is configured with the following parameters:
>>
>> <Connector port="80" protocol="HTTP/1.1"
>> maxThreads="400"
>> connectionTimeout="20000"
>> redirectPort="8443" />
>>
>> The balancer has the following configuration:
>> Server version: Apache/2.4.39 (codeit)
>> Server built: Apr 3 2019 18:54:14
>> Architecture: 64-bit
>> Server MPM: event
>> threaded: yes (fixed thread count)
>> forked: yes (variable process count)
>>
>>
>> Thanks.
>> Best regards.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
Re: Re[2]: How to set apache load balancer for send request to 6
tomcat server
Posted by Zahid Rahman <za...@gmail.com>.
There is a really great series of videos on this subject. He is referencing
tomcat Apache website.
If you speak German
https://youtu.be/mQKZ8-EfBHU
On Tue, 24 Dec 2019, 09:17 Giancarlo Celli, <gi...@flottaweb.com>
wrote:
> Thanks for the reply.
> More than anything else my question is to know if the configuration
> parameters of the various threads, connections, etc. they are set up well
> or if they could somehow down the service.
> And if you recommend any changes to optimize the service itself.
> He again attached the files with the extracts of the configurations
> Thanks.
> Best regards.
> Giancarlo
>
>
> ------ Messaggio originale ------
> Da: "Zahid Rahman" <za...@gmail.com>
> A: "Tomcat Users List" <us...@tomcat.apache.org>; "Giancarlo Celli" <
> giancarlo.celli@flottaweb.com>
> Inviato: 23/12/2019 23:56:41
> Oggetto: Re: How to set apache load balancer for send request to 6 tomcat
> server
>
> If you wish we can work the problem , piece by piece through logical
> construction of the solution.
>
>
>
> On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, <giancarlo.celli@flottaweb.com
> >
> wrote:
>
>
> Hi,
> I need to configure a load balancer with apache connector on a jelastic
> server that redirects requests to 6 server workers with tomcat 7 installed.
> Atteched you can find extract from httpd.conf and workers.properties.
> I need to send single request to tomcat server individually, so I set
> sticky_session to 0.
> Could you tell me if parameters are configured correctly?
> Is the collector able to handle all requests?
> Could you give me some further advice?
>
> Each tomcat server is configured with the following parameters:
>
> <Connector port="80" protocol="HTTP/1.1"
> maxThreads="400"
> connectionTimeout="20000"
> redirectPort="8443" />
>
> The balancer has the following configuration:
> Server version: Apache/2.4.39 (codeit)
> Server built: Apr 3 2019 18:54:14
> Architecture: 64-bit
> Server MPM: event
> threaded: yes (fixed thread count)
> forked: yes (variable process count)
>
>
> Thanks.
> Best regards.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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Re[2]: How to set apache load balancer for send request to 6 tomcat server
Posted by Giancarlo Celli <gi...@flottaweb.com>.
Thanks for the reply.
More than anything else my question is to know if the configuration
parameters of the various threads, connections, etc. they are set up
well or if they could somehow down the service.
And if you recommend any changes to optimize the service itself.
He again attached the files with the extracts of the configurations
Thanks.
Best regards.
Giancarlo
------ Messaggio originale ------
Da: "Zahid Rahman" <za...@gmail.com>
A: "Tomcat Users List" <us...@tomcat.apache.org>; "Giancarlo Celli"
<gi...@flottaweb.com>
Inviato: 23/12/2019 23:56:41
Oggetto: Re: How to set apache load balancer for send request to 6
tomcat server
>If you wish we can work the problem , piece by piece through logical
>construction of the solution.
>
>
>
>On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, <gi...@flottaweb.com>
>wrote:
>
>> Hi,
>> I need to configure a load balancer with apache connector on a jelastic
>> server that redirects requests to 6 server workers with tomcat 7 installed.
>> Atteched you can find extract from httpd.conf and workers.properties.
>> I need to send single request to tomcat server individually, so I set
>> sticky_session to 0.
>> Could you tell me if parameters are configured correctly?
>> Is the collector able to handle all requests?
>> Could you give me some further advice?
>>
>> Each tomcat server is configured with the following parameters:
>>
>> <Connector port="80" protocol="HTTP/1.1"
>> maxThreads="400"
>> connectionTimeout="20000"
>> redirectPort="8443" />
>>
>> The balancer has the following configuration:
>> Server version: Apache/2.4.39 (codeit)
>> Server built: Apr 3 2019 18:54:14
>> Architecture: 64-bit
>> Server MPM: event
>> threaded: yes (fixed thread count)
>> forked: yes (variable process count)
>>
>>
>> Thanks.
>> Best regards.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
Re: How to set apache load balancer for send request to 6 tomcat server
Posted by Zahid Rahman <za...@gmail.com>.
If you wish we can work the problem , piece by piece through logical
construction of the solution.
On Mon, 23 Dec 2019, 17:45 Giancarlo Celli, <gi...@flottaweb.com>
wrote:
> Hi,
> I need to configure a load balancer with apache connector on a jelastic
> server that redirects requests to 6 server workers with tomcat 7 installed.
> Atteched you can find extract from httpd.conf and workers.properties.
> I need to send single request to tomcat server individually, so I set
> sticky_session to 0.
> Could you tell me if parameters are configured correctly?
> Is the collector able to handle all requests?
> Could you give me some further advice?
>
> Each tomcat server is configured with the following parameters:
>
> <Connector port="80" protocol="HTTP/1.1"
> maxThreads="400"
> connectionTimeout="20000"
> redirectPort="8443" />
>
> The balancer has the following configuration:
> Server version: Apache/2.4.39 (codeit)
> Server built: Apr 3 2019 18:54:14
> Architecture: 64-bit
> Server MPM: event
> threaded: yes (fixed thread count)
> forked: yes (variable process count)
>
>
> Thanks.
> Best regards.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
Re: How to set apache load balancer for send request to 6 tomcat
server
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Giancarlo,
On 12/30/19 12:11, Giancarlo Celli wrote:
> Hi Chris, to avoid any kind of overload, I would like every single
> request to be forwarded to a backend server.
Session stickiness only determines WHICH backend server your request
will be routed to. If your session gets mapped to a server which has
failed, that request will fail-over to another server.
The advantage to sticky-sessions is two-fold:
1. When not clustering and user-sessions are required (i.e. for
login), then sticky-sessions are REQUIRED
2. When clustering sessions, sticky-sessions are also REQUIRED to
ensure that the same session object is being used for all requests,
limiting the possibility of race-conditions. There is no cross-cluster
synchronization to prevent simultaneous access to the same session on
two different nodes.
I can't really see a use-case for NOT using sticky-sessions unless you
have HUGE, bursty-load and the contents of the session aren't very
important. (Or you are using a non-standard session-manager.)
> I attach the files again hoping you can view them correctly. I
> await your suggestions.
A few thoughts:
> worker.node1.ping_mode=P
This will cause a ping to be sent for every request, but no periodic
checks will be made. It probably doesn't matter much, but you may want
to start with ping_mode=A and reduce the frequency if you observe any
performance problems.
> worker.node1.ping_timeout=10000
10s is a long time. Do you want to wait 10s for a request to fail-over
to another server?
> worker.node1.lbfactor=1 worker.node1.socket_timeout=30
Same here: 30s is a long time. You may wait 30 seconds for a back-end
server to fail to respond to a request. Or maybe you have some
requests you expect to take as much as 30 seconds?
> worker.node1.connection_pool_timeout=20
> worker.node1.recover_time=5
> <Connector port="80" protocol="HTTP/1.1" maxThreads="400"
> connectionTimeout="20000" redirectPort="8443" />
Good: connectionTimeout == connection_pool_timeout
Everything looks okay to me. Are you having any specific problems, or
are you just asking if everything looks reasonable?
- -chris
> ------ Messaggio originale ------ Da: "Christopher Schultz"
> <chris@christopherschultz.net
> <ma...@christopherschultz.net>> A: users@tomcat.apache.org
> <ma...@tomcat.apache.org> Inviato: 27/12/2019 16:29:28
> Oggetto: Re: How to set apache load balancer for send request to 6
> tomcat server
>
>> Firma ha problemi -----BEGIN PGP SIGNED MESSAGE-----<br />Hash:
>> SHA256<br /><br />Giancarlo,<br /><br />On 12/23/19 12:45,
>> Giancarlo Celli wrote:<br />> Hi, I need to configure a load
>> balancer with apache connector on a<br />> jelastic server
>> that redirects requests to 6 server workers with<br />> tomcat
>> 7 installed. Atteched you can find extract from httpd.conf<br
>> />> and workers.properties. I need to send single request to
>> tomcat<br />> server individually, so I set sticky_session to
>> 0.<br /><br />So you want your clients to switch servers even
>> when they don't have to?<br /><br />> Could you tell me if
>> parameters are configured correctly? Is the<br />> collector
>> able to handle all requests? Could you give me some<br />>
>> further advice?<br />> <br />> Each tomcat server is
>> configured with the following parameters:<br />> <br />>
>> <Connector port="80" protocol="HTTP/1.1" maxThreads="400" <br
>> />> connectionTimeout="20000" redirectPort="8443" /><br
>> />> <br />> The balancer has the following configuration:
>> Server version:<br />> Apache/2.4.39 (codeit) Server built:
>> Apr 3 2019 18:54:14 <br />> Architecture: 64-bit Server MPM:
>> event threaded: yes<br />> (fixed thread count) forked: yes
>> (variable process count)<br /><br />Your attachments were
>> stripped. Can you please post an example worker<br />and your
>> JkMounts from httpd.conf? We don't need the whole httpd.conf.<br
>> /><br />- -chris<br />-----BEGIN PGP SIGNATURE-----<br />Comment:
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>> ---------------------------------------------------------------------
>>
>>
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> <ma...@tomcat.apache.org> For additional
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>> <ma...@tomcat.apache.org>
>>
>
>
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Re[2]: How to set apache load balancer for send request to 6 tomcat server
Posted by Giancarlo Celli <gi...@flottaweb.com>.
Hi Chris,
to avoid any kind of overload, I would like every single request to be
forwarded to a backend server.
I attach the files again hoping you can view them correctly.
I await your suggestions.
Best regards.
Giancarlo
------ Messaggio originale ------
Da: "Christopher Schultz" <ch...@christopherschultz.net>
A: users@tomcat.apache.org
Inviato: 27/12/2019 16:29:28
Oggetto: Re: How to set apache load balancer for send request to 6
tomcat server
>Firma ha problemi
>-----BEGIN PGP SIGNED MESSAGE-----<br />Hash: SHA256<br /><br
>/>Giancarlo,<br /><br />On 12/23/19 12:45, Giancarlo Celli wrote:<br
>/>> Hi, I need to configure a load balancer with apache connector on
>a<br />> jelastic server that redirects requests to 6 server workers
>with<br />> tomcat 7 installed. Atteched you can find extract from
>httpd.conf<br />> and workers.properties. I need to send single
>request to tomcat<br />> server individually, so I set
>sticky_session to 0.<br /><br />So you want your clients to switch
>servers even when they don't have to?<br /><br />> Could you tell me
>if parameters are configured correctly? Is the<br />> collector able
>to handle all requests? Could you give me some<br />> further
>advice?<br />> <br />> Each tomcat server is configured with the
>following parameters:<br />> <br />> <Connector port="80"
>protocol="HTTP/1.1" maxThreads="400" <br />>
>connectionTimeout="20000" redirectPort="8443" /><br />> <br
>/>> The balancer has the following configuration: Server version:<br
>/>> Apache/2.4.39 (codeit) Server built: Apr 3 2019 18:54:14 <br
>/>> Architecture: 64-bit Server MPM: event threaded: yes<br />>
>(fixed thread count) forked: yes (variable process count)<br /><br
>/>Your attachments were stripped. Can you please post an example
>worker<br />and your JkMounts from httpd.conf? We don't need the whole
>httpd.conf.<br /><br />- -chris<br />-----BEGIN PGP SIGNATURE-----<br
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Re: How to set apache load balancer for send request to 6 tomcat
server
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Giancarlo,
On 12/23/19 12:45, Giancarlo Celli wrote:
> Hi, I need to configure a load balancer with apache connector on a
> jelastic server that redirects requests to 6 server workers with
> tomcat 7 installed. Atteched you can find extract from httpd.conf
> and workers.properties. I need to send single request to tomcat
> server individually, so I set sticky_session to 0.
So you want your clients to switch servers even when they don't have to?
> Could you tell me if parameters are configured correctly? Is the
> collector able to handle all requests? Could you give me some
> further advice?
>
> Each tomcat server is configured with the following parameters:
>
> <Connector port="80" protocol="HTTP/1.1" maxThreads="400"
> connectionTimeout="20000" redirectPort="8443" />
>
> The balancer has the following configuration: Server version:
> Apache/2.4.39 (codeit) Server built: Apr 3 2019 18:54:14
> Architecture: 64-bit Server MPM: event threaded: yes
> (fixed thread count) forked: yes (variable process count)
Your attachments were stripped. Can you please post an example worker
and your JkMounts from httpd.conf? We don't need the whole httpd.conf.
- -chris
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