What does the counter next to (external) indicate in health check statistic?
In the following health check statistic, the indication of (external): 3 is a counter of failuresDNS Server
dns.192.168.1.250
Enabled Check failed DOWN
Last status: DNS lookup failed.
Successes (total): 0 (last): Never (consecutive): 0
Failures (total): 11277 (last): Mon, 15 May 2023 14:50:35 GMT (consecutive): 11277 (external): 3
Last response time: 150298 ms Average response time: 150277 ms
Minimum response time: 149721 ms Maximum response time: 151166 ms
The counter will continue to increase until the failure threshold has triggered, it will then reset to zero.
The settings for this can be located in the health check settings, either referring to default or override settings as configured. (Administration > Health Checks and Monitoring > Health Checks)