This article presents a comprehensive recovery plan for MySQL replication failures in a Kubernetes environment using Bitnami Helm charts. The author documents a real incident where a secondary replica repeatedly crashed due to mysql_upgrade lock timeouts, followed by replication breakdown from expired binlogs. The solution involves step-by-step diagnosis, safe restart procedures, and binlog-based resynchronization. While the specifics target Bitnami Helm, the underlying principles apply to any MySQL replication setup on Kubernetes. This signal is valuable for DevOps engineers and database administrators who need to build resilient database architectures. The systematic approach to failure recovery is a critical skill in production environments, and this case study provides a concrete example of how to handle such scenarios without data loss.
A detailed technical guide to recovering MySQL replication after failures in Bitnami Helm deployments on Kubernetes, covering lock timeouts and binlog expiration.