HowToWritePlugins > fieldnames > warning

{fieldname}.warning

{fieldname}.warning defines low and/or high thresholds that will be used by munin-limits to warn external systems like Nagios if the read value is outside the given range.

Properties

Attribute name	{fieldname}.warning
Value	min:max, min: or :max
Allowed characters	[0-9:.-]
Spaces allowed	No
Context	Datasource-specific plugin attributes
Required	No
Default value	None

Example

In the example below, munin-limits will send a warning if the number of pending packages is higher than (or, although improbable, lower than) 0 packages.

# munin-run apt config
graph_title Pending packages
graph no
pending.label pending
pending.warning 0:0
hold.label hold

Other values

To send a warning if the read value is below a given number, this munin.conf example - borrowed from a busy mail system which should never see no mails coming through - could be useful:

[foo.example.com]
    address 10.20.30.40
    postfix_mailstats.delivered.warning 1:

See also

{fieldname}.critical