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Check_MK Manual

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IBM Lotus Domino: Count of Tasks

Distribution: official part of Check_MK
License: GPL
Supported Agents: SNMP

This check uses snmp to extract the list of currently running tasks on IBMs Lotus Domino Servers. It monitors the number of tasks matching a certain name or regular expression and checks it against warning and critical upper and lower levels.


A user definable service description. The description must be unique within each host. Changing the description will make Nagios think that it is another service.


Since Check_MK cannot know which tasks should be monitored, an inventory needs some configuration. The configuration is done via inv_domino_tasks. The structure of this variable is a list of seven-tuples. It is similar but not completely the same as the configuration of manual checks. The seven components of each entry are: (1) a service description, (2) a pattern (just as the first parameter of the check), (3) the boolean value None and (4) - (7) the warning and critical levels for the number of processes.

During inventory Check_MK tries to match all entries on each process found on the target host. If an entry matches, a new check will be created according to the entry (if it's not already existing).

The service description may contain one or more occurances of %s. In this case, the pattern must be a regular expression prefixed with ~. For each %s in the description, the expression has to contain one "group". A group is a subexpression enclosed in brackets, for example (.*) or ([a-zA-Z]+) or (...). When the inventory finds a task matching the pattern, it will substitute all such groups with the actual values when creating the check. In this way one rule can create several checks on a host.

If the pattern contains more groups than occurrences of %s in the service description, only the first matching subexpressions are used for the service descriptions. The matched substrings corresponding to the remaining groups are nevertheless copied into the regular expression.

As an alternative to %s you may also use %1, %2, etc. These expressions will be replaced by the first, second, ... matching group, allowing you to reorder things.

Wildcards not enclosed by brackets are simply copied verbatim to the created checks. Please refer to the examples for more details.

The user specification must be the boolean value None because the check uses the inventory function of the ps check, where this key is required.

The warning and critical levels are simply copied to the created checks.

Inventory allows optional host specification. You can prepend a list of host names or a list of tag names and ALL_HOSTS to some of all rules of the inventory specification. That way you can make the inventory apply some rules only to certain hosts.