Alert for persistent unconfirmed down events
Today we encountered a situation where one server in a round robin was not responding. What would happen is that sometimes the check would be proxied to the bad server and it would reported as down. Then Pingdom to confirm the down would ask another node to check. However, this check would be proxied to another server and say everything is fine.
Looking at the reports it's clear that something is wrong since there are regular persistent unconfirmed downs. It would be great to be able to set an alert when some threshold of unconfirmed down events exist allowing us to look into the problem if needed.
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