Tuesday, December 2, 2025

Probers for SSL Certificate Validity

On services I run, I make sure that we have a prober to check how long the site's certificate has remaining to allow AlertManager rules to be written if it is getting close.

Hey LabCorp hit me up, we should talk.

Chrome browser certificate viewer for patientws.labcorp.com showing that the certificate was valid from November 5, 2024 at 4:00:00 PM until Tuesday, December 2, 2025 at 3:59:59 PM, which at the time this screenshot was taken was about 45 minutes in the past.