GitHub user penguin2716 added a comment to the discussion: HTTP ERROR 503 Service Unavailable
@weizhouapache > if you run with cloudstack 4.19 or prior, JAVA 17 is not supported. > JAVA 17 is supported since 4.20 So the problem was that I followed the `latest` installation guide, which says ["CloudStack 4.19 requires Java 17 JRE"](https://docs.cloudstack.apache.org/en/latest/installguide/management-server/#:~:text=CloudStack%204.19%20requires%20Java%2017%20JRE.), but the required Java version was 11. I had to consult version `4.19.1.2` [which certainly says 11](https://docs.cloudstack.apache.org/en/4.19.1.2/installguide/management-server/#:~:text=CloudStack%204.19%20requires%20Java%2011%20JRE.), instead of the `latest`. Thank you! GitHub link: https://github.com/apache/cloudstack/discussions/9880#discussioncomment-11168357 ---- This is an automatically sent email for users@cloudstack.apache.org. To unsubscribe, please send an email to: users-unsubscr...@cloudstack.apache.org