Deploying Apache DolphinScheduler 3.1.9 Cluster with MySQL Instead of PostgreSQL? A Practical Docker Compose Guide

Short summary

Guide to deploying Apache DolphinScheduler 3.1.9 with MySQL instead of the default PostgreSQL using Docker Compose. Provides modified Dockerfiles with MySQL JDBC driver, complete docker-compose configuration, and environment variables. Enables MySQL-standardized teams to integrate DolphinScheduler with minimal friction.

• •Step-by-step Docker Compose deployment replacing PostgreSQL with MySQL backend
• •Dockerfile modifications add MySQL JDBC driver to all DolphinScheduler service images
• •Complete environment configuration with healthchecks and service dependencies for production use

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