Please always respond on list. More below -- On Jul 23, 2009, at 3:20 PM, Eugene Vilensky wrote:
>> Nagios doesn't queue alerts. They're handed to the mail system in >> real >> time. If the mail system doesn't accept them, they're gone forever. > > Hi Marc, > > I could be wrong, but this doesn't appear to be true in my particular > experience in this specific instance. Nagios doesn't queue messages. There's no saying it could be wrong because it's just not possible. There's just nothing built in to do it. Once the notification command quits, nagios moves on. It doesn't know or care if it was successful or not. In your case, the mail system _did_ accept them because of the way Postfix handles locally sent mail. It doesn't need to be running to accept and queue those messages. > I had postfix up for 2 minutes > and generated 1700 alerts (Nagios 3.1.2)...there are not enough > hostchecks and servicechecks to generate this much activity so fast! Which strengthens, not weakens, my argument. - Your notification command is probably set to /bin/mail. Nagios submits the notification to /bin/mail sometime during your testing. Nagios is completely out of the picture now as the message was accepted by the mail system. - /bin/mail passes it on to Postfix via the sendmail->sendmail.postfix symlink. - sendmail.postfix sends the message to the postdrop program which - dumps the message directly into the postfix queues, regardless of whether the postfix daemon is running or not. - You (re)started postfix and it delivered all the messages it had in it's queues. 1700 messages in 2 minutes is trivial to deliver locally from queue. Easy enough to verify though. In your recent maillog, do you see submission by nagios and then delivery by postfix for all those messages or just the delivery by postfix? -- Marc ------------------------------------------------------------------------------ _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net 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
