Re: Is there an upgrade process for Karaf 4.1.0 to 4.1.1?

[mtod09]

Thanks for the info. I'll check it out.

Mike



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Re: Is there an upgrade process for Karaf 4.1.0 to 4.1.1?

[Christian Schneider]

Many people use the karaf-maven-plugin to create a custom distro that can
define the boot features (karaf ones as well as your own) as well as
changes to configs.
If you do this in your build or deployment pipeline then upgrading to a new
karaf version is mainly changing the karaf version to the new one.

Unfortunately this fully automated packaging does not play well with using
hot deployments. It works best when you define the whole karaf setup in
your pipelines and do not touch it when it is running (immutable server
pattern).

For upgrades without dowtime the typical scheme is a blue / green
deployment where you have failover of at least two servers and upgrade one
at a time while the other takes the load.

Christan

2017-04-05 19:49 GMT+02:00 mtod09 :

> I have a test bed with a master / slave cluster setup for Artemis each node
> is on different Karaf instance and using a replicated persistence model. I
> guess I can give it a try under load to see if this will function as an
> upgrade model.
>
> I'm not using the Karaf cluster options only the Artemis master/slave I
> mainly use Karaf's hot deployment for camel routes.
> We implemented an event base model so our clients need a single point to
> get
> the latest event. So a split brain is a real issue running Active/Active
> models.
>
> I was planning on having 4 geographical clusters at min 2 US and 2 EU in a
> network of brokers configuration. This will all be running in AWS and has
> to
> be fully scripted and auto discovery.
>
> Thanks
>
> Mike
>
>
>
>
>
>
>
>
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> View this message in context: http://karaf.922171.n3.nabble.
> com/Is-there-an-upgrade-process-for-Karaf-4-1-0-to-4-
> 1-1-tp4050010p4050045.html
> Sent from the Karaf - User mailing list archive at Nabble.com.
>



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Christian Schneider
http://www.liquid-reality.de


Open Source Architect
http://www.talend.com

RE: Is there an upgrade process for Karaf 4.1.0 to 4.1.1?

[mtod09]

I have a test bed with a master / slave cluster setup for Artemis each node
is on different Karaf instance and using a replicated persistence model. I
guess I can give it a try under load to see if this will function as an
upgrade model.

I'm not using the Karaf cluster options only the Artemis master/slave I
mainly use Karaf's hot deployment for camel routes.
We implemented an event base model so our clients need a single point to get
the latest event. So a split brain is a real issue running Active/Active
models.

I was planning on having 4 geographical clusters at min 2 US and 2 EU in a
network of brokers configuration. This will all be running in AWS and has to
be fully scripted and auto discovery.

Thanks

Mike








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RE: Is there an upgrade process for Karaf 4.1.0 to 4.1.1?

[CLEMENT Jean-Philippe]

I guess you don't have several servers with load balancing. So, would it be 
possible to start a temporary server which will replace the main one, then 
upgrade the main one and replace back the temporary one?

JP

-Message d'origine-
De : mtod09 [mailto:m...@thetods.net] 
Envoyé : mercredi 5 avril 2017 15:22
À : user@karaf.apache.org
Objet : Re: Is there an upgrade process for Karaf 4.1.0 to 4.1.1?

That does not sound like a good approach for a production system. If I have to 
rebuild for every new version of Karaf it would cause a big disruption in 
production. I would have to stop all inbound messaging then drain all the 
persisted messages before I could cut over to a new system. Not to mention 
stopping all Camel routes and stopping any system connecting to them.

That could take a while across regions.

Is there any other approach that could ease the pain?

I may have to rethink the architecture.

Mike 



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Re: Is there an upgrade process for Karaf 4.1.0 to 4.1.1?

[mtod09]

That does not sound like a good approach for a production system. If I have
to rebuild for every new version of Karaf it would cause a big disruption in
production. I would have to stop all inbound messaging then drain all the
persisted messages before I could cut over to a new system. Not to mention
stopping all Camel routes and stopping any system connecting to them.

That could take a while across regions.

Is there any other approach that could ease the pain?

I may have to rethink the architecture.

Mike 



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Re: Is there an upgrade process for Karaf 4.1.0 to 4.1.1?

[Christian Schneider]

You can try to copy over the etc dir but you will have to reinstall you 
feature repos and features unless you set them as boot features.


Christian

On 04.04.2017 15:02, mtod09 wrote:

Anyone have a process I would like to upgrade without having reinstall
everything?



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Re: Is there an upgrade process for Karaf 4.1.0 to 4.1.1?

[mtod09]

Anyone have a process I would like to upgrade without having reinstall
everything?



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