[wildfly-dev] Customizing a provisioned server

Stuart Douglas stuart.w.douglas at gmail.com
Thu Sep 11 02:09:47 EDT 2014

I have started a document at 
https://developer.jboss.org/wiki/WildflyProvisioning to contain all the 
info regarding provisioning. At the moment it is fairly basic, it just 
contains all the use cases that we have considered.

I will expand on it to include more detail over the next few days.


Thomas Heute wrote:
> On 09/04/2014 11:15 PM, Stuart Douglas wrote:
>> Thomas Heute wrote:
>>> I would need to provision Wildfly remotely with something like JON or
>>> Fabric8 for instance, the CLI would not work for that if I understand
>>> correctly.
>> This is more about how to customize a server after it has been
>> provisioned. So for example you can have a file that basically says 'I
>> want a WF instance with these features, these deployments, and then
>> perform these mgmt ops to configure it'
> Sounds like what I want to do remotely :)
> Let's take an example, I would like to be able to "deploy and configure"
> keycloak on a group of servers (i can handle the "group" part).
> Deploying and installing keycloak today requires to:
> - Add a few modules
> - add 1 extension and 1 subsytem in standalone/domain.xml
> - add 1 security domain in standalone/domain.xml
> If Keycloak could be delivered as "feature pack" to do the 3 steps above
> I would still want the possibility to do this remotely on a set of servers.
> You could argue that you need to prepare a package beforehand "locally"
> and they deploy the fully customized WF but I don't think it would
> always be the preferred solution
> Does that make sense ?
> Thomas
>> Stuart
>>> REST-ish API would work better I think (I guess option 3 covers that),
>>> Fabric8 preference would likely be option 1 though (note that in this
>>> usecase the end-user doesn't really touch the XML files, he's using a
>>> tool)
>>> BTW: I completely missed the discussion about provisioning tool until
>>> this email so please forgive my ignorance. If there is a document or
>>> email thread that would help me catch up I would love to have a look.
>>> Thomas
>>> On 09/04/2014 06:16 AM, Stuart Douglas wrote:
>>>> Hi everyone,
>>>> Work on the provisioning tool is now well underway, so I would like to
>>>> revisit something I mentioned in my original email, which is allowing
>>>> the provisioning tool to customize a provisioned server.
>>>> I think there are a few options here, some more palatable than others.
>>>> In no particular order:
>>>> 1) Customize the XML directly
>>>> Using this approach we would just directly customize the XML
>>>> configuration files. This would basically require the use of XSLT
>>>> (yuck), or require us to basically invent our own version of XSLT (even
>>>> more yuck). Even though this approach will work, and will be fairly
>>>> easy
>>>> to implement, I think it would really suck from an end-user point of
>>>> view, and I think we should discount it.
>>>> 2) Allow the user to provide CLI commands to customise the server
>>>> This is by far my favorite approach. The provisioning file would just
>>>> contain a list of CLI commands, and would execute them in order. I
>>>> think
>>>> this is by far the most intuitive, and the CLI is well documented.
>>>> 3) Allow the user to provide DMR operations to customize the server
>>>> Similar to 2, but allow the user to provide DMR or JSON operations to
>>>> customize the server. I think this is not nearly as nice as 2, as users
>>>> are much more likely to be familiar with the CLI rather than DMR.
>>>> I think 2 is by far the best approach, however it does open up the
>>>> question of how and when to execute the operations. I think the easiest
>>>> way to do this would be to just start the server in admin only mode
>>>> on a
>>>> custom port (so it will not interfere with any existing running Wildfly
>>>> instances), and just execute the CLI commands in admin only mode.
>>>> Does this all sound reasonable?
>>>> Stuart
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