Nagios Support Forum

On the "Monitoring Settings",
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Monitoring Settings
Specify the parameters that determine how the service should be monitored.

Under normal circumstances...
Monitor the service every [ A ] minutes.
When a potential problem is first detected...
Re-check the service every [ B ] minutes up to [ C ] times before generating an alert.
Monitor the service with this command... (Advanced users only)
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For example I use ping to monitor and "Re-check the service every [ 1 ] minutes up to [ 3 ] times before generating an alert." meaning：
1. Re-check the service every 1 minutes up to 3 times (3 x 1minutes, total 1+1+1+1=4minutes then alert)?
2. Re-check the service every 1 minutes up to 3 times (3 actions in 1minutes, total 1+1=2minutes then alert)?

xpertech wrote:1. Re-check the service every 1 minutes up to 3 times (3 x 1minutes, total 1+1+1+1=4minutes then alert)?
2. Re-check the service every 1 minutes up to 3 times (3 actions in 1minutes, total 1+1=2minutes then alert)?

2. would actually be the way Nagios works.

scottwilkerson wrote:

xpertech wrote:1. Re-check the service every 1 minutes up to 3 times (3 x 1minutes, total 1+1+1+1=4minutes then alert)?
2. Re-check the service every 1 minutes up to 3 times (3 actions in 1minutes, total 1+1=2minutes then alert)?

2. would actually be the way Nagios works.

Can I use like these? (because I want to shorten the alert time)
==========================================================
Monitoring Settings
Specify the parameters that determine how the service should be monitored.

Under normal circumstances...
Monitor the service every [ 0.5 ] minutes.
When a potential problem is first detected...
Re-check the service every [ 0.5 ] minutes up to [ 3 ] times before generating an alert.
Monitor the service with this command... (Advanced users only)
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Sorry, XI was designed to use whole minute increments.

scottwilkerson wrote:Sorry, XI was designed to use whole minute increments.

So, the shortest alert time will be 2 minutes?

No, if you set it to 1 it will alert immediately

scottwilkerson wrote:No, if you set it to 1 it will alert immediately

Do you mean this...
==========================================================
Monitoring Settings
Specify the parameters that determine how the service should be monitored.

Under normal circumstances...
Monitor the service every [ 1 ] minutes.
When a potential problem is first detected...
Re-check the service every [ 0 ] minutes up to [ 0 ] times before generating an alert.
Monitor the service with this command... (Advanced users only)
==========================================================

nope, I mean this

==========================================================
Monitoring Settings
Specify the parameters that determine how the service should be monitored.

Under normal circumstances...
Monitor the service every [ 1 ] minutes.
When a potential problem is first detected...
Re-check the service every [ 1 ] minutes up to [ 1 ] times before generating an alert.
Monitor the service with this command... (Advanced users only)
==========================================================

scottwilkerson wrote:nope, I mean this

==========================================================
Monitoring Settings
Specify the parameters that determine how the service should be monitored.

Under normal circumstances...
Monitor the service every [ 1 ] minutes.
When a potential problem is first detected...
Re-check the service every [ 1 ] minutes up to [ 1 ] times before generating an alert.
Monitor the service with this command... (Advanced users only)
==========================================================

I thought the total minutes = first 1 minute + second 1 minute = 2 minutes
=====================================================================
Under normal circumstances...
Monitor the service every [ 1 ] minutes.
When a potential problem is first detected...
Re-check the service every [ 1 ] minutes up to [ 3 ] times before generating an alert.
=====================================================================
0 ---------------------- 1 ---------------------- 2 ---------------------- 3 ---------------------> minutes
^check.................^check.................^check.................^check...... Monitor the service every [ 1 ] minutes.
...............problem^...chk...chk...chk...^alert......Re-check the service every [ 1 ] minutes up to [ 1 ] times before generating an alert.

You need to use "up to [1] times before generating an alert":

Service - max check attempts

This directive is used to define the number of times that Nagios will retry the service check command if it returns any state other than an OK state. Setting this value to 1 will cause Nagios to generate an alert without retrying the service check again.

Parameter name: max_check_attempts
Required: yes