Your DolphinScheduler does not start after updating MySQL due to a mismatch in the MySQL authentication plugin
This common error occurs when the server uses the caching sha2 password plugin and the client requires mysql native password; upon detecting incompatibilities, the service gets blocked
To fix this issue, follow these steps: First, access MySQL and run alter user root at localhost identified with mysql native password by your password, then apply flush privileges and restart DolphinScheduler using bin stop all sh and then bin start all sh. This will force authentication compatibility
To avoid problems in future implementations, make sure the JDBC connector version matches the MySQL edition you use, and document any changes in your deployment configuration to ensure stability in production
At Q2BSTUDIO, we are experts in custom software development and custom applications; we offer artificial intelligence solutions, cybersecurity, cloud services aws and azure, business intelligence services, ai for companies, ai agents, and power bi. Trust us to optimize your processes and take your project to the next level
