Re: Disk space warning ("gdu-notification-daemon" type) for remote systems

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On 12/03/14 15:55, Les Mikesell wrote:
> On Wed, Mar 12, 2014 at 9:07 AM, Toralf Lund <toralf.lund@xxxxxxx> wrote:
>>> I don't think you provided enough information for anyone to help.
>>> What kind of remote gui are you using?
>> I wouldn't actually call it a "remote gui" - there is just an
>> application that communicates with a server process on a remote host,
>> via a custom protocol. This application has a "local" GUI. The remote
>> host is headless, although the machine typically has X, so you could run
>> processes on it with remote display.
>>
>> I actually thought most if this would be clear from how I described the
>> system initially.
> No, to me a 'remote gui' would mean a remote X session, either a full
> desktop or a window from an app running remotely.  And either of those
> approaches would let you run other things.
>
>>>      If it is a full remote X
>>> desktop session (freenx/x2go or native network) you could run anything
>>> you could run locally at the console because it is in fact running on
>>> the server side.  If you are running X locally on the display machine,
>>> you can still run anything you want on the server machine with its
>>> window open on the display desktop.
>> Obviously. But like I said, I was wondering if there was a "more
>> automatic" way directly supported by the distro. Like, maybe you could
>> somehow configure "gdu-notification-daemon" so that it would
>>
>>   1. Start automatically independently of logins.
>>   2. Redirect notifications to a different system.
> The usual approach for things like that is to start your own instance
> as part of your desktop startup or login script.  That way it has a
> way to attach to 'your' session/display.
>>> I think it makes sense because there are already frameworks that are
>>> relatively easy to install and set up even if you initially only
>>> target one host and test - and you can get things like CPU and network
>>> bandwidth tracking for free.
>> Maybe.
>>
>> However, I should perhaps also add that anything based on notification
>> based on e-mail or similar services might lead to problems in that the
>> systems don't normally deliver or receive e-mails.
> Mail is sort of server-centric.  That is, sending/receiving are pretty
> lightweight with any number of easily available tools, and you
> probably already have (or have access to) a central or public mail
> service.
Not necessarily. The system is running on a separate network segment 
that has no "general purpose" computers. It is physically connected to 
the outside world, but most IP ports are closed for security reasons 
and/or to limit bandwidth.

>
>>>     Then if you want, you can expand the
>>> monitoring to other things you are likely to need, but even if you
>>> don't it is probably easier than building your own notification
>>> system.    It's probably not the easiest thing to start with, but
>>> OpenNMS is pretty flexible.  For example if you have an xmpp system
>>> with clients for instant messaging, it can send alerts to a group
>>> conference so the interested people see it without cluttering email.
>> Hmm... Not sure if xmpp would be any better than email...
> It's the same server-centric concept, just a different approach to
> connecting.  If you start from scratch you could run OpenFire which
> will archive as much as you want of the group conference so when you
> connect you'd see any recent issues - and like email, you can probably
> find a client that will run minimized and pop up a notification when a
> new message appears.   The group-chat - or email to a group list have
> the feature that the person who is going to work on the problem has an
> easy way to tell the others with a simple reply.
See above.

- T


>


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