Monitoring Modes

AlertSite UXM provides several monitoring modes. A monitoring mode controls the location usage order, whether the locations coordinate error detection with each other, and which locations send alerts.

You can select the desired mode in your monitor settings.


Monitoring Mode Primary Global Notify Global Verify Round Robin SLA (MultiPOP)

(used for SLA monitoring)

Locations (?)How many locations you can check your website from. The maximum number of locations depends on your monitoring plan. 1+ 1+ 1+ 2+ 2+
Checking from multiple locations (?)On each run, the monitoring locations check your website either in parallel or one after another. In parallel In parallel In parallel One after another In parallel
Rotating through location pool (?)Rotation means the monitor uses a subset of its location pool (say, 2 out of 10 locations) on every run, cycling through the locations. This way you can monitor from many locations, while limiting the number of checks on each run. If rotation is not used, the monitor checks from all of its locations every time. You enable or disable rotation in the monitor options. Yes Yes Yes Yes
Local retry on error (?)When a monitor finds an error from some location, it repeats the check from the same location to avoid false positives. Yes, if the monitor has Enable Local Retry selected.
Error check from another location (?)When a monitor finds an error from some location, it repeats the check from another location to avoid false positives. Yes Yes
When alerts are sent (?)Alerts can be triggered on errors at any location, a specific location or at multiple locations at the same time. Primary location finds an error Any location finds an error Any location finds an error 2 or more locations find an error within the same run Errors are found at 1, 2, 3 or all locations within the same run. The number of locations is specified by the SLA Alerts option in your AlertSite UXM preferences.
Private Node Server locations supported (?)A private node is a private monitoring station installed on your local network, allowing you to monitor internal applications that are not accessible from the public Internet. Some monitoring modes are not compatible with private nodes. Yes Yes Yes


Error Verification

Before sending an error alert, all monitors repeat the check to avoid false positives. Depending on the options, a monitor re-checks from the same location and another location.

The error verification procedure is as follows:

  1. If the monitor’s Enable Local Retry option is selected, the monitor checks again from the same location.
  2. If the second check does not confirm the error, the monitor reports the warning state. A check from another location is not performed.
  3. If the second check confirms the error, and either:

    then the monitor also checks from an alternate remote location.

  4. If the remote location also detects an error, an alert is triggered.

Considerations for Usage-Based Monitoring

On the Usage-Based Monitoring plan, the default mode for new monitors is Global Verify, set to rotate locations, with 1 location per interval. Changing the monitoring mode, run interval, the number of locations used, or rotation options affects the credit usage rate.

For example, if you have a monitor with 4 locations:

See Also

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