Nagios – How to schedule a regular period of downtime

nagios

I have Nagios Core up and running, and cannot find any way to schedule a regular period of downtime for hosts. For example, let's say I have a host that is scheduled to reboot itself every Sunday at 1 am. I'd like to be able to schedule that known downtime of "every Sunday from 1:00am to 1:10am" into Nagios, but the only way I see to do so is one event at a time.

Best Answer

Without using the cron solution mentioned by JakePaulus the typical method for handling "downtime" with Nagios is to define and use a timeperiod that does not include the time during which the host will be down. E.g., in your case

define timeperiod {
  timeperiod_name foo
  sunday 00:00-1:00,1:10-24:00
  monday 00:00-24:00
  tuesday 00:00-24:00
  wednesday 00:00-24:00
  thursday 00:00-24:00
  friday 00:00-24:00
  saturday 00:00-24:00
}

A simpler method is to take your pre-existing 24x7 timeperiod and define and exclusion:

define timeperiod {
  name reboot
  timeperiod_name reboot
  sunday 1:00-1:10
}

define timeperiod {
  timeperiod_name foo
  use 24x7
  exclude reboot
}

Related Solutions

How to setup a nagios event handler to run only in non working hours

Take a look at the Nagios macro ISVALIDTIME.

This is a special on-demand macro that returns a 1 or 0 depending on whether or not a particular time is valid within a specified timeperiod. There are two ways of using this macro:

$ISVALIDTIME:24x7$ will be set to "1" if the current time is valid within the "24x7" timeperiod. If not, it will be set to "0".
$ISVALIDTIME:24x7:timestamp$ will be set to "1" if the time specified by the "timestamp" argument (which must be in time_t format) is valid within the "24x7" timeperiod. If not, it will be set to "0".

Don't know whether this is present in the service context, but you can test it. Define a timeperiod "non-working hours" and take ISVALIDTIME as a parameter to your eventhandler script. When the script is called during working hours, let it do nothing and exit.

When this doesn't work, you could just verify the time of day in the eventhandler script.

How to relay Nagios information to a central location

What you're looking for is NSCA. On the central Nagios server you create all the hosts and services you want to monitor, but don't enable active checks. You also need to enable passive check results in the main Nagios configuration.

The "distributed" Nagios instances then need to use NSCA to submit service check results to the central host.

Best Answer

Related Solutions

How to setup a nagios event handler to run only in non working hours

How to relay Nagios information to a central location

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