meeting: bundle deployment to non-platforms
Jay Shaughnessy
jshaughn at redhat.com
Fri May 27 16:09:14 UTC 2011
On 5/27/2011 11:46 AM, Ian Springer wrote:
> On 05/27/2011 11:15 AM, John Mazzitelli wrote:
>>> * Originally bundles were designed to lay down complete servers (app
>>> server with apps already in place, etc). The latest proposal moves
>>> toward smaller, one-off deployments. We may need to work out the
>>> semantics around when one bundle's deployment dir is a subdir of another
>>> bundle's deployment dir. For example, bundle-1 is an app-server and
>>> bundle-2 is a web-app. And then bundle-1 gets reverted...
>> yet another good question - we need to think about this. deploying a
>> bundle inside a bundle will be problematic.
>
> I think the solution here would be for the user to make sure the outer
> bundle includes the deploy directory in the list of directories to ignore.
>
> We could help alleviate this by checking if the selected destination dir
> is a subdir of any other deployed bundle's destination dir before
> deploying the bundle. The warning could look something like this:
>
> "Warning: The selected destination directory
> '/opt/jboss-eap-5.1.1.GA/jboss-as/default/server/deploy' is a
> subdirectory of the deployed bundle 'JBoss EAP' v2.0. Future updates of
> the 'JBoss EAP' bundle could blow away the 'MyEnterpriseApp.ear' bundle
> unless the 'JBoss EAP' bundle is configured to ignore the
> '/opt/jboss-eap-5.1.1.GA/jboss-as/default/server/deploy' directory. Are
> you sure you want to proceed?"
We need a solution that does not require one bundle's design to need
knowledge of a future bundle's needs. It may not even be possible. I'd
favor an approach that has very autonomous bundle behavior and just
clearly states the semantics. The fact is that nothing prevents the user
from deploying server-level bundles. So, if they opt for more-granular
bundle deployments, potentially on top of another bundle's deployment,
then we just need to make clear what will happen. In fact it may be no
different that what happens today. Which, I think is a revert back to
the previous deployment that maintains changed files. Not sure. I think
we may want to avoid introducing any concept of bundle hierarchy, it
would be quite complex. Tags and Descriptions may be enough to do what
is needed.
This is not too unlike keeping support for "clean" deployments. When
selected it means the entire deploy directory is wiped prior to laying
down the new bits. This obviously could have impact on layered bundling,
and certainly could be detrimental to something like a deploy
directory. And that is why everything to do with bundling should be
done first in test, then perhaps in staging, and finally in production
envs. And that is exactly what bundle destinations are all about. The
idea being that destinations can be set up for test/stage/prod envs,
with perhaps different bundle versions deployed to each, in a
progressive lifecycle.
>>> * Question - where is the deployment meta-data kept? It can't be stored
>>> under the deploy directory, right?
>> and yet another good question. We do support the ability to deploy
>> bundles in the deploy/ directory (if you enable that new feature where
>> the recipe tells us to not fully manage the root dest dir). HOWEVER, you
>> can only deploy ONE bundle to it. You can't deploy more than one because
>> the metadata will overlap/overwrite each other. So this is something
>> else to think about.
> In the case of deploying an exploded ear or war, the bundle metadata
> could potentially be stored in the ear or war directory. However, this
> wouldn't work out if the ear or was deployed as a file, or for a bundle
> that included multiple deployments (e.g. an ear, a sar, and a ds.xml
> file), so I think we're going to have to add support for multiple
> bundles deployed to the same destination directory.
I was concerned about even the validity of placing files under some of
these potential destination directories.
> _______________________________________________
> rhq-devel mailing list
> rhq-devel at lists.fedorahosted.org
> https://fedorahosted.org/mailman/listinfo/rhq-devel
>
More information about the rhq-devel
mailing list