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  • : 14:55 BST - Ansible playbook ran to apply changes to api-gateway

  • : 14:59 BST - Detected by dev team and users

  • : 14:30 BST - Fix deployed

  • : Discovered failures in reading files from ESR. There were 3 attempts to trigger processing the file DE_NWN_APC_20210506_00002693.DAT which all failed with an SSL Exception.

Root Cause(s)

  • Ansible playbook replaced latest certificates with outdated ones

  • The updated certificates were added manually, so the playbook didn’t know about them

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Action Items

Owner

Ensure certificates can be applied automatically by playbook

Improve alerting from Lambdas (ESR)

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Lessons Learned

  • Make sure anything applied manually will be handled automatically or do it automatically from the start