Base

Lessons learned from Base’s recent block building outage

Base is committed to building in the open, including public retrospectives to share learnings when issues arise.

On 09/21/2024 at 15:14 UTC, Base Mainnet experienced a 17 minute block building outage. The integrity of the chain was not affected, all funds on Base were safe, and block production resumed after we mitigated the incident. This retrospective dives into the root cause, the impact, how we mitigated, and what we plan to improve moving forward.

The root cause of the block building outage was a misconfiguration on our sequencer cluster. When the current block producer became unhealthy, it was unable to successfully start block building on another instance. The incident was mitigated by manually starting block production on a correctly configured instance.
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