Re: headless operation

Aleksander Bandelj wrote:
> I like 4). SmartFrog would then start with /etc/smartfrog/init.sf. 

For the latest release we've just gone to -headless (which 
init.d/smartfrogd sets), so that you can
(a) test without trying to unset things
(b) not break on a mac which is Unix-without-X11.

We've also fixed the management console to fail gracefully if it it 
cannot start up, so you still deploy a GUI without causing the server to 
fail and roll back the root deployment.

> It 
> would be nice if there was a command line option (and SmartFrog 
> component) which would deploy all *.sf files in some directory (eg. 
> /etc/smartfrog/init.d). I am thinking of writing such component myself, 
> but I don't know when I will get to it. Until then I would go with 
> init.sf which creates root compound and default.sf which deploys in it 
> by default.
> 

That's an idea I had last month and filed away as a possible future todo 
item:
http://jira.smartfrog.org/jira/browse/SFOS-149

Have the unix startup scripts or a component deploy every .sf file in a 
well known directory.

There's some security complications there: do you want to keep 
everything secured in a JAR, or can you get away with everything in 
plain text .sf files. Personally, I like the plain text option, and 
would certainly like to see something like this too; something that 
would poll the dir for changes and undeploy when the file(s) go away, 
deploy when they arrive. It would let you do deploy-by-copy deployment 
of smartfrog systems.

-steve

> -a
> 
> Steve Loughran wrote:
>> I've been having some fun with the rpms and headless operation.
>>
>> 1. setting the DISPLAY to localhost:8 doesnt work. it may work on some 
>> boxes, but not all.
>>
>> 2. what we ought to do is have the daemon start up from init.d without 
>> any display at all, somehow.
>>
>> 3. we could maybe have it start up a specific default.sf
>>
>> 4. or we make the startup scripts clever, use the absence of $DISPLAY to 
>> set java.awt.headless=true and then dynamically decide whether to deploy 
>> the display or not based on the LAZY PROPERTY java.awt.headless.
>>
>> Thoughts?
> 
> 
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