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From: Marcel Offermans <marcel.offermans@luminis.nl>
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Subject: Re: Using the management interface to deploy distros to targets
Date: Tue, 9 Apr 2013 14:23:34 +0200
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Hello Dan,

On Apr 9, 2013, at 13:50 , Dan Gravell <elstensoftware@googlemail.com> =
wrote:

> Hi all. I just built and ran up the latest version of the server from =
SVN
> trunk. I've got some questions... mainly about the UI.
>=20
> What do "retrieve", "store" and "revert" do? Is there some notion of =
local,
> uncommitted data?

Yes. The idea is similar to a version control system:

1. First you retrieve the latest state from the server into your =
"workspace".

2. Then you edit that data until you are happy with the changes.

3. Finally you store your changes to make them take effect (or revert if =
not).

> How do I uninstall a distro from an agent? "-" buttons do nothing. "x"
> removes a target but then it re-appears, disassociated. Even though it
> appears disassociated to the distro the bundles are still installed on =
the
> target.

You make associations by drag and drop.

Removing them is a bit less intuitive. You select one hand of the =
association, then move your mouse to the other hand (which should be =
highlighted at this point) and press the "-" to just remove the =
association.

The "x" is to remove something. For targets that still won't work 100% =
because of [1] and [2].

> Similarly, I want to remove a distro and add a new distro, to simulate =
a
> new release of my product. I expect this is related to how to =
uninstall...
> but how do I do this?

See above, remove one association, create a new one.

> The "identification" of an agent - how is this normally populated? I =
assume
> people don't leave it as "target-1". Any ideas on how to make this =
work for
> thousands of targets?

You have to somehow generate a unique ID. The management agent uses an =
"Identification" service for that. The current one simply reads a system =
property, but you could provide an implementation that, for example, =
uses the MAC address of your network card or some other unique property.

> I have a set of beta users. I want to be able to offer the latest beta
> distro to the beta users, and the latest GA release to everyone else.
> What's the best way of doing this... different servers or a way of
> parameterising?

You could create two distributions ("beta" and "GA") and associate =
targets (users) with either. In your case, if you have many users, I =
would programmatically create one association between "GA" and all =
targets that don't have a beta flag, and one association between "beta" =
and all targets that do have a beta flag.

I think I briefly mentioned how to do that with the REST API, but feel =
free to follow up...

> After a while I can't use the UI anymore, I get "Session Expired". =
Even
> when I log back in I get the same message and this redirects me back =
to
> login page. I can log in via incognito mode instead.


Hmm, I did recently fix a bug which now expires sessions a bit more =
aggressively. However, you should still be able to log out and back in =
if this happens.

I would have to investigate. It could be that something is left in the =
Vaadin session. As a work-around you could try appending this to the =
URL:

?restartApplication=3Dtrue

That should restart the Vaadin application. Let me know if that helps, =
as that would be a hint that something in Vaadin is not correctly reset =
when the session times out now.

Greetings, Marcel


[1] https://issues.apache.org/jira/browse/ACE-221
[2] https://issues.apache.org/jira/browse/ACE-230=

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