Certificate renewal watchdog saga
Close to a thousand certificates were found sitting on a renewal method with no alarm attached, the watchdog built for it then paged 55 times and hid eleven real outages, and the same 55-alert noise returned a month later until expired certificates were wrongly blamed on two customers' setup.
5 posts · ~15 min total reading
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Two Expired Certificates, 72 Hidden Hostnames, and a Morning of Wrong Questions
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Why off-edge went quiet while stalled kept paging
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Why 44 Stuck Certificates Were Fine and 11 Were an Outage
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Why TXT Validation Left 956 Customer Hostnames Waiting on Someone Else's DNS
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What a repair script cannot see in a 90-day certificate renewal cycle