📝 Postmortem: June 2025 Service Outage
Incident Duration:
June 16, 2025 – June 21, 2025
Status: Resolved
Root Cause: Misconfigured infrastructure and networking components
📌 Summary
Between June 16 and June 21, 2025, our services experienced a prolonged and critical disruption. This impacted system accessibility, network stability, and overall deployment reliability. The root causes were traced back to multiple misconfigurations within our new infrastructure stack, primarily involving our Dokploy instance, networking setup, and reverse proxy (Traefik).
⚙️ Technical Cause
Upon investigation, we identified several compounding issues:
Misconfigured Dokploy Instance: The initial deployment lacked critical network isolation and routing configurations, leading to service timeouts and container miscommunication.
Traefik Reverse Proxy: Misconfigured routing and TLS handling caused failed ingress connections and prevented external traffic from reaching internal services.
Networking Setup Errors: Overlapping subnets and improperly bridged networks led to intermittent connectivity between deployer and host machines, further destabilizing the system.
Missing Health Checks: Some containers were not being monitored properly, which delayed automatic restarts and extended service downtime.
🚑 Immediate Actions Taken
Isolated deployer and host networks to stabilize inter-service traffic.
Corrected routing rules and middleware configuration in Traefik.
Rebuilt the Dokploy configuration with clearer network separation and improved error handling.
Re-enabled and audited health checks across services.
Conducted live testing and verification to ensure full service restoration by June 21, 2025.
✅ Resolution and Recovery
The system was gradually stabilized beginning on June 16, with partial access restored within 30 minutes of our first major fix. However, additional network-level issues prolonged the resolution timeline. By June 21 at 3:35 AM, all services were fully restored and verified functional.
📚 Lessons Learned
Configuration reviews must be enforced before production deployment of new infrastructure tools.
Network planning (IP ranges, bridges, proxies) needs to be documented and peer-reviewed.
Critical systems (like DNS routing, ingress, and orchestration layers) must have dedicated monitoring and rollback plans.
🔧 Preventative Measures
Implement automated preflight checks in our deployment pipelines.
Schedule recurring audits of proxy and ingress configurations.
Build fallback container orchestration playbooks for Dokploy-based deployments.
Expand post-deploy smoke testing to catch network-level regressions earlier.
🗣️ Final Note
We sincerely apologize for the extended downtime and the impact it had on your experience. While our intention was to modernize our infrastructure, we recognize that our transition planning and oversight fell short. This will be addressed internally, and improvements are already underway.
Thank you for your patience and continued support.
