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Posted to user@karaf.apache.org by Matt Madhavan <ma...@gmail.com> on 2011/09/29 00:31:22 UTC

Queations On Child Instances - likely scenerios and Uses

Hello,
Sorry bear with me  am just beginning to grasp the usefulness of Karaf! I
have some questions on Karaf!

When under what situations you would want to create child instances. when is
it useful? Can some one give me some info on this one? I'm looking for some
likely scenerios!


Thanks
Matt

--
View this message in context: http://karaf.922171.n3.nabble.com/Queations-On-Child-Instances-likely-scenerios-and-Uses-tp3377626p3377626.html
Sent from the Karaf - User mailing list archive at Nabble.com.

Re: Queations On Child Instances - likely scenerios and Uses

Posted by Guillaume Nodet <gn...@gmail.com>.
You're right, but I don't think Matt was referring to cellar at all.  Child
instances are managed through the admin commands / scripts / service and
provides the ability to spawn new karaf processes on the same server.

On Thu, Sep 29, 2011 at 23:56, Glen Mazza <gm...@talend.com> wrote:

> **
> I don't think you really create "child" instances of Karaf -- but you
> instead cluster them (i.e., peers of Karaf instances) using Cellar, no?
>
> Glen
>
>
> On 09/29/2011 02:16 AM, Guillaume Nodet wrote:
>
> I think the main reason is to benefit from the os process isolation.
> If you want to run multiple applications on the same server but want to be
> able to have one keep runnning if the other fail abruptly, child instances
> are the way to go.
>
> On Thu, Sep 29, 2011 at 00:31, Matt Madhavan <ma...@gmail.com>wrote:
>
>> Hello,
>> Sorry bear with me  am just beginning to grasp the usefulness of Karaf! I
>> have some questions on Karaf!
>>
>> When under what situations you would want to create child instances. when
>> is
>> it useful? Can some one give me some info on this one? I'm looking for
>> some
>> likely scenerios!
>>
>>
>> Thanks
>> Matt
>>
>> --
>> View this message in context:
>> http://karaf.922171.n3.nabble.com/Queations-On-Child-Instances-likely-scenerios-and-Uses-tp3377626p3377626.html
>> Sent from the Karaf - User mailing list archive at Nabble.com.
>>
>
>
>
>  --
> ------------------------
> Guillaume Nodet
> ------------------------
> Blog: http://gnodet.blogspot.com/
> ------------------------
> Open Source SOA
> http://fusesource.com
>
>
>
> --
> Glen Mazza
> Talend - http://www.talend.com/products/tsf
> Blog - http://www.jroller.com/gmazza
> Twitter - glenmazza
>
>


-- 
------------------------
Guillaume Nodet
------------------------
Blog: http://gnodet.blogspot.com/
------------------------
Open Source SOA
http://fusesource.com

Re: Queations On Child Instances - likely scenerios and Uses

Posted by Glen Mazza <gm...@talend.com>.
I don't think you really create "child" instances of Karaf -- but you 
instead cluster them (i.e., peers of Karaf instances) using Cellar, no?

Glen

On 09/29/2011 02:16 AM, Guillaume Nodet wrote:
> I think the main reason is to benefit from the os process isolation.
> If you want to run multiple applications on the same server but want 
> to be able to have one keep runnning if the other fail abruptly, child 
> instances are the way to go.
>
> On Thu, Sep 29, 2011 at 00:31, Matt Madhavan <mattmadhavan@gmail.com 
> <ma...@gmail.com>> wrote:
>
>     Hello,
>     Sorry bear with me  am just beginning to grasp the usefulness of
>     Karaf! I
>     have some questions on Karaf!
>
>     When under what situations you would want to create child
>     instances. when is
>     it useful? Can some one give me some info on this one? I'm looking
>     for some
>     likely scenerios!
>
>
>     Thanks
>     Matt
>
>     --
>     View this message in context:
>     http://karaf.922171.n3.nabble.com/Queations-On-Child-Instances-likely-scenerios-and-Uses-tp3377626p3377626.html
>     Sent from the Karaf - User mailing list archive at Nabble.com.
>
>
>
>
> -- 
> ------------------------
> Guillaume Nodet
> ------------------------
> Blog: http://gnodet.blogspot.com/
> ------------------------
> Open Source SOA
> http://fusesource.com
>


-- 
Glen Mazza
Talend - http://www.talend.com/products/tsf
Blog - http://www.jroller.com/gmazza
Twitter - glenmazza


Re: Queations On Child Instances - likely scenerios and Uses

Posted by Jean-Baptiste Onofré <jb...@nanthrax.net>.
Another possible use case is to create child instance with Cellar to 
make it scalable.

Regards
JB

On 09/29/2011 08:16 AM, Guillaume Nodet wrote:
> I think the main reason is to benefit from the os process isolation.
> If you want to run multiple applications on the same server but want to
> be able to have one keep runnning if the other fail abruptly, child
> instances are the way to go.
>
> On Thu, Sep 29, 2011 at 00:31, Matt Madhavan <mattmadhavan@gmail.com
> <ma...@gmail.com>> wrote:
>
>     Hello,
>     Sorry bear with me  am just beginning to grasp the usefulness of
>     Karaf! I
>     have some questions on Karaf!
>
>     When under what situations you would want to create child instances.
>     when is
>     it useful? Can some one give me some info on this one? I'm looking
>     for some
>     likely scenerios!
>
>
>     Thanks
>     Matt
>
>     --
>     View this message in context:
>     http://karaf.922171.n3.nabble.com/Queations-On-Child-Instances-likely-scenerios-and-Uses-tp3377626p3377626.html
>     Sent from the Karaf - User mailing list archive at Nabble.com.
>
>
>
>
> --
> ------------------------
> Guillaume Nodet
> ------------------------
> Blog: http://gnodet.blogspot.com/
> ------------------------
> Open Source SOA
> http://fusesource.com
>

-- 
Jean-Baptiste Onofré
jbonofre@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com

Re: Queations On Child Instances - likely scenerios and Uses

Posted by Guillaume Nodet <gn...@gmail.com>.
I think the main reason is to benefit from the os process isolation.
If you want to run multiple applications on the same server but want to be
able to have one keep runnning if the other fail abruptly, child instances
are the way to go.

On Thu, Sep 29, 2011 at 00:31, Matt Madhavan <ma...@gmail.com> wrote:

> Hello,
> Sorry bear with me  am just beginning to grasp the usefulness of Karaf! I
> have some questions on Karaf!
>
> When under what situations you would want to create child instances. when
> is
> it useful? Can some one give me some info on this one? I'm looking for some
> likely scenerios!
>
>
> Thanks
> Matt
>
> --
> View this message in context:
> http://karaf.922171.n3.nabble.com/Queations-On-Child-Instances-likely-scenerios-and-Uses-tp3377626p3377626.html
> Sent from the Karaf - User mailing list archive at Nabble.com.
>



-- 
------------------------
Guillaume Nodet
------------------------
Blog: http://gnodet.blogspot.com/
------------------------
Open Source SOA
http://fusesource.com