Hi all! Foremost: I've searched the online manual and the FAQ. I have not searched the mailing list archives for an answer to my question. I apologise in advance, but I found it rather difficult to come up with keywords to search for.
OK, here's the challenge: Imagine a couple of services or a couple of hosts, that are, well, coupled - by some device or dependency that itself cannot be monitored my Nagios. E.g. I want to monitor a couple of hosts connected to the same switch but the switch is not even accessable on Layer 3 or they are in some remote computing centre, but I cannot point at a single router on which they all depend. Yet they all depend on the hosting centre's "Internet connection". Or imagine virtual web servers. For each of them there are chances that it fails individually. Probably just because someone messes up an update of the content. OTOH all of them may fail at once, because the database server fails. OK, I can monitor the database server. Now they fail because the web server itself gets too loaded. Monitor the web server's CPU. Possibly. Now they fail because ... I simply cannot think of everything in advance. Now, what's the problem? Our alarm system sends messages to the pagers of the staff on duty. Which costs money. Not much, but tiny amounts add up. So, what I'd like to implement is this policy: "Here's a group of <somethings>, i.e. hosts or services. If any number of them fails, just send a notification for the first one. I will look at the Nagios status page anyway and probably something else connecting them in some way failed." Is this possible? From reading the docs it seems to me like dependencies form a directed graph and circles are probably a bad thing. And they do not solve the problem. You would need to have every service in the group depend on every other one. I have not used event handlers or other advanced mechanisms, yet. So: I think that someone else must have faced the same problem before - is there any "best practice" document, if the above policy can be implemented at all? Thanks a lot, Patrick -- punkt.de GmbH * Vorholzstr. 25 * 76137 Karlsruhe Tel. 0721 9109 0 * Fax 0721 9109 100 [EMAIL PROTECTED] http://www.punkt.de Gf: Jürgen Egeling AG Mannheim 108285 ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ Nagios-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
