<div dir="ltr"><div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-size:small">On Fri, May 22, 2026 at 9:19\u202fPM Adam Glauser <<a href="mailto:adamglauser@gmail.com" target="_blank">adamglauser@gmail.com</a>> wrote:</div></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div><div dir="auto">In your case, I think the Targets are the black box-exporter services. They are responding, so are considered up, even though the SSH service they are monitoring is down (probe_status=0)</div></div></div></blockquote><div><br></div><div style="font-size:small" class="gmail_default">That makes perfect sense.</div><div style="font-size:small" class="gmail_default">Blackbox Exporter is up, but whatever it is monitoring is down.</div><div style="font-size:small" class="gmail_default"><br></div><div style="font-size:small" class="gmail_default">I had to struggle to customize the email messages, and finally got that figured out.</div><div style="font-size:small" class="gmail_default">Though they are only HTML (not plain text).</div><div style="font-size:small" class="gmail_default"><br></div><div style="font-size:small" class="gmail_default">Another thing is that it reports an outage immediately.</div><div style="font-size:small" class="gmail_default">Nagios4 made sure that the outage persists before it reported it, tuning out network glitches and such. </div><div style="font-size:small" class="gmail_default"><br></div><div style="font-size:small" class="gmail_default">And Nagios4 had the concept of flapping, when a service keeps going down then up.</div><div style="font-size:small" class="gmail_default">It is not reported as down, rather it is flagged as flapping. </div><div style="font-size:small" class="gmail_default">I can't find something like that in Prometheus. </div></div></div>
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