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Non-technical Description
Not able to connect to the GMC servers to get the revalidation data we require
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Trigger
GMC Replaced an SSL/TLS certificate on their server last night and it hadn't been applied correctly or hadn't been tested correctly. therefore blocking anybody from making secure connections to the service.
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Detection
Slack notification from Ade @ 08:39 on 23/07/2021, pointing out that the GMC-sync-prod job had frailed again
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Resolution
Sent an email to GMC stating that we had performed tests from our servers and from personal devices and that the results were the same for all connections.
Sent:
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Reply:
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Timeline
: 01:05 - An alert in the #monitoring channel of ETL success but in the wrong time slot.
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: 12:25 - GMC confirmed certificate change was made 22/07/2021 which may be the reason for the issue
Root Cause(s)
A replacement SSL/TLS Certificate had been applied incorrectly to the Server at the GMC where we connect to get the GMC Data into TIS.