4:11 a.m.
The design of the software is to not share the subdirectories under
standalone. This is noted under
https://docs.wildfly.org/26/Getting_Started_Guide.html#wildfly-directory-...
.
It's possible to get away with sharing the configuration dir but I wouldn't
recommend doing so unless you are very clear on your use case, as the
server writes there during boot, and of course if you use a management
agent to modify the config. Note that if you use the deployment-scanner
you are using a management agent to modify the config, as the scanner is
just a built in automated management agent.
Also, sharing standalone/deployments will break things as the scanner
writes there and assumes that any changes there were either made by it or
by a user telling it what to do.
On Wed, Feb 16, 2022 at 2:55 AM Romain Pelisse <belaran(a)redhat.com> wrote:
Hi Tomas,
Running multiple instances of EAP on one host is fairly easy, but does
requires to get all the details right.I made an Ansible demo to showcase
this exact use case
<https://github.com/ansible-middleware/wildfly-cluster-demo>;. You may
even be able to reuse the automation.
In short, in this demo, I keep the standalone.xml in the
standalone/configuration folder, but data, tmp and log are instance
specific and located elsewhere.
On Wed, Feb 16, 2022 at 9:43 AM Tomas Hofman <thofman(a)redhat.com> wrote:
> Hello,
>
> could anybody confirm if it's OK (or not OK) to run multiple clustering
> Wildfly instances that would share common standalone/ directory? Even if
> the instances are supposed to be running the same deployments?
>
>
> I always thought that the standalone/ directory should be separate for
> each Wildfly/EAP instance, but I can't find any resources that would
> clearly state that shared standalone/ is a problem.
>
> The problems I think of are:
>
> * instances could override their standalone.xml config,
> * instances could override some transactional or cache data?
>
> Thanks :),
> Tomas
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--
Brian Stansberry
Principal Architect, Red Hat JBoss EAP
He/Him/His