Hi,
I totally agree with JB. We use docker to start our karaf containers. In
addition with boot features we can setup karaf container with just one
simple command. Deploying new karaf runtimes to our customers has become
much easier this way. And if you have a look at fabric8 / openshift you
will see, that even cloud hosters go in that direction.
Regards, Marco
Am 08.04.2015 um 17:10 schrieb Jean-Baptiste Onofré:
I see your point.
But IMHO, I don't see anything new with Docker, just a easier or more
convenient way to do what you do with Solaris Zone, Linux jail/xen,
and vm like VirtualBox and vmWare ;)
So, Docker itself doesn't provide an application container: it
provides an system container.
Of course, you can always start a Docker image with just a JVM for
your application, for instance bootstrapping Jetty, etc. Or you can
just bootstrap an application container (like Karaf ;)), ready to host
your applications.
My $0.02.
Regards
JB
On 04/08/2015 04:58 PM, Ryan Moquin wrote:
I actually pop by your blob periodically to see if you have posted
anything new. Your blog post on Karaf and Docker is initially what made
me want to look into and understand how Docker could benefit Karaf. As
I've been reading other sources, I'm becoming less optimistic about how
Docker benefits Karaf.
As Vincent mentioned, cloud computing and virtualization are already
using a similar approach. I guess I'm wondering why we need to add yet
another virtualization container on top of another.
Ryan
On Wed, Apr 8, 2015 at 10:12 AM, Jean-Baptiste Onofré <j...@nanthrax.net
<mailto:j...@nanthrax.net>> wrote:
Hi Ryan,
I invite you to read my blog about Karaf and Docker:
http://blog.nanthrax.net/2014/__12/apache-karaf-christmas-__gifts-docker-io-profiles-and-__decanter/
<http://blog.nanthrax.net/2014/12/apache-karaf-christmas-gifts-docker-io-profiles-and-decanter/>
and the Karaf Docker proposal:
http://karaf.922171.n3.nabble.__com/DISCUSSION-Karaf-docker-__io-td4038470.html
<http://karaf.922171.n3.nabble.com/DISCUSSION-Karaf-docker-io-td4038470.html>
Regards
JB
On 04/08/2015 02:31 PM, Ryan Moquin wrote:
Hi,
I've been reading up on Docker and trying to understand what
all the
fuss is about (I'm still not sure for several reasons, but I
digress).
I was wondering how Docker might influence Karaf in the future
as well
as how Docker fits in with OSGi and Karaf in general.
Specifically my questions are:
1. It seems like the hype of Docker is causing people to shy
away from
the dynamic nature of OSGi, such as being able to update bundles
in a
running Karaf container. Is the use of Docker and Karaf boiling
down to
creating a static Karaf image and anytime you want to upgrade
anything,
you throw away the instance and replace it with a newly built
instance?
It feels inefficient. It also feels like it really complicates
everything. Unless you are developing on Linux, development
using
Docker containers is really slow. Dealing with setting up
docker
containers to test things out locally also seems like a lot of
overhead. If you don't test locally with Docker, then can you
be sure
that deploying in a Docker container will work properly?
2. In regards to the first question, and the fact that people
indicate
they think Docker will become the standard, will Karaf be dumbed
down in
the future due to the static nature of Docker? Meaning, if
Docker
*does* becomes the de factor standard for deploying everything,
it feels
like developers would be discouraged from using a lot of the
run-time
benefits OSGi offers.
I kind of feel like the big push of Docker in the development
community
in general (as a whole, not talking about the Karaf developer
community), will potentially cause a lack of innovation and
improvements
in the deploying of applications. Docker could become a
crutch. If an
application is slowly leaking memory over a 24 hour period, why
fix it?
When it crashes, just replace it with a new instance.
Am I wrong? This is just my initial thoughts and questions. I
wanted
to see what other people thought and how other people view
Docker and
Karaf being used or how it is being used.
Ryan
--
Jean-Baptiste Onofré
jbono...@apache.org <mailto:jbono...@apache.org>
http://blog.nanthrax.net
Talend - http://www.talend.com
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