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Posted to users@tomcat.apache.org by Prarthana Agwania <pr...@gmail.com> on 2015/06/19 11:08:49 UTC
Apache Tomcat 8.0.22 server on different machines
Hi,
We have a requirement wherein we would like to know the urls of each
of the tomcat instance running on different servers. The scenario is
somewhat like,
1. There are multiple servers running on different machines say
Server1, Server2, Server3
2. There are multiple Tomcat instances running on each of the machines
as independent instances say, Server1--> Tomcat1, Tomcat2,
Tomcat3.....Server2--> Tomcat5, Tomcat6,
Tomcat7.........Server3-->Tomcat8, Tomcat9, Tomcat10
P.S. - Tomcat servers are not clustered
Now, is there a way that an external user who does not have access to
the servers can know the urls for each Tomcat running under different
servers? Or, is it possible that Server1 or Tomcat1 can act as the
master and have the information about other servers(remember they are
not clustered)?Can this information be made available under one hood
and used further to deploy wars or modify any configuration etc?
Thanks.
Regards,
Prarthana
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Re: Apache Tomcat 8.0.22 server on different machines
Posted by Christopher Schultz <ch...@christopherschultz.net>.
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Hash: SHA256
André,
On 6/20/15 7:34 AM, André Warnier wrote:
> André Warnier wrote:
>> Christopher Schultz wrote:
>>> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
>>>
>>> Prarthana,
>>>
>>> On 6/19/15 5:08 AM, Prarthana Agwania wrote:
>>>> We have a requirement wherein we would like to know the urls
>>>> of each of the tomcat instance running on different servers.
>>>> The scenario is somewhat like,
>>>>
>>>> 1. There are multiple servers running on different machines
>>>> say Server1, Server2, Server3
>>>>
>>>> 2. There are multiple Tomcat instances running on each of
>>>> the machines as independent instances say, Server1-->
>>>> Tomcat1, Tomcat2, Tomcat3.....Server2--> Tomcat5, Tomcat6,
>>>> Tomcat7.........Server3-->Tomcat8, Tomcat9, Tomcat10 P.S. -
>>>> Tomcat servers are not clustered
>>>>
>>>> Now, is there a way that an external user who does not have
>>>> access to the servers can know the urls for each Tomcat
>>>> running under different servers? Or, is it possible that
>>>> Server1 or Tomcat1 can act as the master and have the
>>>> information about other servers(remember they are not
>>>> clustered)?Can this information be made available under one
>>>> hood and used further to deploy wars or modify any
>>>> configuration etc?
>>>
>>> This is something you will have to build yourself. You may be
>>> able to build something using components Tomcat provides (e.g.
>>> Tribes), but there is nothing like this that exists already.
>>>
>>> Usually, people want to mask the size of their cluster from
>>> external users. What's your use case here?
>>>
>>
>> I think that the OP just explained it above, at the end of his
>> message.
>>
>> Prarthana, you may want to have a look at something like Bonjour
>> (https://en.wikipedia.org/wiki/Bonjour_%28software%29).
>>
>> Each Tomcat would have to register with the service when it
>> starts up, and de-register when it stops. And then some client
>> could find out about the available Tomcats. Looks like something
>> for a LifeCycleListener..
>>
>
> Add-on : as a matter of fact, someone seems to have a similar idea
> : http://www.floop.org.uk/projects/tomcat-registry Not much there
> yet, but it may be worth talking to them.
Also: https://wiki.apache.org/tomcat/TomcatGridDesign
Note: that's a design and not a product.
- -chris
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Re: Apache Tomcat 8.0.22 server on different machines
Posted by André Warnier <aw...@ice-sa.com>.
André Warnier wrote:
> Christopher Schultz wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA256
>>
>> Prarthana,
>>
>> On 6/19/15 5:08 AM, Prarthana Agwania wrote:
>>> We have a requirement wherein we would like to know the urls of
>>> each of the tomcat instance running on different servers. The
>>> scenario is somewhat like,
>>>
>>> 1. There are multiple servers running on different machines say
>>> Server1, Server2, Server3
>>>
>>> 2. There are multiple Tomcat instances running on each of the
>>> machines as independent instances say, Server1--> Tomcat1,
>>> Tomcat2, Tomcat3.....Server2--> Tomcat5, Tomcat6,
>>> Tomcat7.........Server3-->Tomcat8, Tomcat9, Tomcat10 P.S. - Tomcat
>>> servers are not clustered
>>>
>>> Now, is there a way that an external user who does not have access
>>> to the servers can know the urls for each Tomcat running under
>>> different servers? Or, is it possible that Server1 or Tomcat1 can
>>> act as the master and have the information about other
>>> servers(remember they are not clustered)?Can this information be
>>> made available under one hood and used further to deploy wars or
>>> modify any configuration etc?
>>
>> This is something you will have to build yourself. You may be able to
>> build something using components Tomcat provides (e.g. Tribes), but
>> there is nothing like this that exists already.
>>
>> Usually, people want to mask the size of their cluster from external
>> users. What's your use case here?
>>
>
> I think that the OP just explained it above, at the end of his message.
>
> Prarthana, you may want to have a look at something like Bonjour
> (https://en.wikipedia.org/wiki/Bonjour_%28software%29).
>
> Each Tomcat would have to register with the service when it starts up,
> and de-register when it stops. And then some client could find out
> about the available Tomcats.
> Looks like something for a LifeCycleListener..
>
Add-on : as a matter of fact, someone seems to have a similar idea :
http://www.floop.org.uk/projects/tomcat-registry
Not much there yet, but it may be worth talking to them.
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Re: Apache Tomcat 8.0.22 server on different machines
Posted by André Warnier <aw...@ice-sa.com>.
Christopher Schultz wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Prarthana,
>
> On 6/19/15 5:08 AM, Prarthana Agwania wrote:
>> We have a requirement wherein we would like to know the urls of
>> each of the tomcat instance running on different servers. The
>> scenario is somewhat like,
>>
>> 1. There are multiple servers running on different machines say
>> Server1, Server2, Server3
>>
>> 2. There are multiple Tomcat instances running on each of the
>> machines as independent instances say, Server1--> Tomcat1,
>> Tomcat2, Tomcat3.....Server2--> Tomcat5, Tomcat6,
>> Tomcat7.........Server3-->Tomcat8, Tomcat9, Tomcat10 P.S. - Tomcat
>> servers are not clustered
>>
>> Now, is there a way that an external user who does not have access
>> to the servers can know the urls for each Tomcat running under
>> different servers? Or, is it possible that Server1 or Tomcat1 can
>> act as the master and have the information about other
>> servers(remember they are not clustered)?Can this information be
>> made available under one hood and used further to deploy wars or
>> modify any configuration etc?
>
> This is something you will have to build yourself. You may be able to
> build something using components Tomcat provides (e.g. Tribes), but
> there is nothing like this that exists already.
>
> Usually, people want to mask the size of their cluster from external
> users. What's your use case here?
>
I think that the OP just explained it above, at the end of his message.
Prarthana, you may want to have a look at something like Bonjour
(https://en.wikipedia.org/wiki/Bonjour_%28software%29).
Each Tomcat would have to register with the service when it starts up, and de-register
when it stops. And then some client could find out about the available Tomcats.
Looks like something for a LifeCycleListener..
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Re: Apache Tomcat 8.0.22 server on different machines
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Prarthana,
On 6/19/15 5:08 AM, Prarthana Agwania wrote:
> We have a requirement wherein we would like to know the urls of
> each of the tomcat instance running on different servers. The
> scenario is somewhat like,
>
> 1. There are multiple servers running on different machines say
> Server1, Server2, Server3
>
> 2. There are multiple Tomcat instances running on each of the
> machines as independent instances say, Server1--> Tomcat1,
> Tomcat2, Tomcat3.....Server2--> Tomcat5, Tomcat6,
> Tomcat7.........Server3-->Tomcat8, Tomcat9, Tomcat10 P.S. - Tomcat
> servers are not clustered
>
> Now, is there a way that an external user who does not have access
> to the servers can know the urls for each Tomcat running under
> different servers? Or, is it possible that Server1 or Tomcat1 can
> act as the master and have the information about other
> servers(remember they are not clustered)?Can this information be
> made available under one hood and used further to deploy wars or
> modify any configuration etc?
This is something you will have to build yourself. You may be able to
build something using components Tomcat provides (e.g. Tribes), but
there is nothing like this that exists already.
Usually, people want to mask the size of their cluster from external
users. What's your use case here?
- -chris
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