How to setup monitoring in Snowplow there is very less documentation on the same

I have seen some monitoring section in some of the config files of snowplow.

    # Optional section for tracking endpoints
    monitoring {
      snowplow{
        collectorUri = "{{collectorUri}}"
        collectorPort = 80 
        appId = "{{appName}}"
        method = "{{method}}"
      }
    }

What does this tracking endpoint mean, i came across one question Monitoring of snowplow

But here @alex pointed out that we redirect to another collector instance, but how is it useful then as what happens if this sytem goes down how we get the loggers also what is the method param in the config?

Thanks

Method is for whether to send via POST or GET.

what happens if this sytem goes down how we get the loggers

You can send the events to a completely separate Snowplow Mini instance.