Incident Library

Component

VPC route tables and firewall rules

VPC 라우팅 테이블과 방화벽 규칙 · vpc-routing-and-firewall

5 cases · 2016 to 2024

Root cause Configuration change3Operator error2
Contributing factor Unverified assumption1Ignored early signal1No safeguard on destructive change1No staged rollout1Unrepresentative staging1
Symptom Network unreachable4Service outage4Resources deleted1
Organisation Acquia1cloud.gov1Railway1Twingate1UK Ministry of Justice1

Cases, by severity

  1. IL-0355 Railway's Google Cloud edge stopped routing inbound requests to apps in all regions for about 10 minutesRailway · 2024

    Root cause Configuration change

  2. IL-0244 A queued pull request destroyed the EKS subnet route table associations and Cloud Platform services went offlineUK Ministry of Justice · 2024

    Root cause Operator error

  3. IL-0541 Two Twingate Relay clusters were discoverable but unreachable, so Clients and Connectors could not attach to themTwingate · 2023

    Root cause Configuration change

  4. IL-0245 Acquia Cloud Enterprise sites in US-East went down when their web servers could no longer reach the Memcache serversAcquia · 2019

    Root cause Operator error

  5. IL-0519 Apps on the cloud.gov PaaS became unavailable after an AWS security group change blocked their outbound trafficcloud.gov · 2016

    Root cause Configuration change

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