GitHub user dR3b deleted a comment on the discussion: [HTTP ERROR 503 Service Unavailable]
I have the same error. I installed version: `4.20.1.0` today without any modification. After that i made the upgrade to: `4.21.0.0`: ``` 2025-08-29 10:03:41,882 WARN [c.c.u.d.T.Transaction] (main:[]) (logid:) Unable to load db configuration, using defaults with 5 connections. Falling back on assumed datasource on localhost:3306 using username:password=cloud:cloud. Please check your configuration com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Could not create connection to database server. Attempted reconnect 3 times. Giving up. ``` Nothing has changed in: `db.properties` and I merged: `config.json` for the new configuration settings. GitHub link: https://github.com/apache/cloudstack/discussions/11534#discussioncomment-14255324 ---- This is an automatically sent email for users@cloudstack.apache.org. To unsubscribe, please send an email to: users-unsubscr...@cloudstack.apache.org