Toralf Lund wrote:
On 11/03/14 14:17, zGreenfelder wrote:
On Tue, Mar 11, 2014 at 8:38 AM, Toralf Lund toralf.lund@pgs.com wrote:
/I need to implement a system of disk space checks and warnings for a client-server setup running CentOS 6. Simply put, I just want a warning popup rather like the ones given by gdu-notification-daemon when server file system is full or nearly full, but they should appear on the client display(s) rather than locally, and must also work when nobody is logged directly in to the (server) system.
it sounds like you think you want to send popup windows across from one system to many remote machines. this seems like a path of madness to me; full of potential problems like x windows security, or if you write your own little daemon to accept messages and display a box, misuse/abuse from playful users.
Not really worried by those things in this context.
The setup is only physically accessible to a very limited group of trusted users, and access to or from the outside world is restricted by all sorts of firewalls etc, and also only available via a very slow and unreliable link...
I think you should build amonitoring system (nagios, xymon, opennms, several others or perhaps your own if you're feeling far too adventurous) instead. right now all you care about is disk space, but eventually someone will want to also check for certain processes, open ports, logfile entries, something and you could spend the time now to put in the hooks for more advanced things and get people in the habit of checking a monitoring system on a regular basis.
In general, that might make sense, but please consider the fact that I'm not talking about a "general" server system. It's a machine dedicated to running a "server" component on one specific software package, and will only ever be contacted by a handful of "display" machines running a GUI component of the same piece of software.
<snip> In general, I agree with the other posters. What may only have very limited accessibility *now* doesn't say anything about next week, or the next manager who comes in's intent.
But to directly answer your question, here's a thought: does the software you're running have the ability to do pop-ups? If so, can you get a message to it - a d/b entry, or a file that it can read? If so, have it do the alert.
mark