GitHub user weizhouapache closed the discussion with a comment: HTTP ERROR 503 Service Unavailable
> I encounter this problem upgrading from 4.19.1.1 to 4.20.0. After upgrade I > tried to access UI but got the 503 error. After downgrading by selecting java > 11, I was able to access the UI again. I thought 4.20 needed java 17 to > work?? Still searching with a solution. I revert my mgm server back to 4.19.1 > java11 and all my KVM host are running on 4.20. All my system VM are also on > 4.19.1. 4.20 works with both java 11 and java 17. java 17 is recommended. you may just need to update the default java version to 11, instead of downgrading to 4.19.1 All mgmt server and kvm hosts should use the same ACS version. If java 17 does not work with ACS 4.20.0, can you share more logs ? please also share the file /etc/default/cloudstack-management GitHub link: https://github.com/apache/cloudstack/discussions/9880#discussioncomment-13382302 ---- This is an automatically sent email for users@cloudstack.apache.org. To unsubscribe, please send an email to: users-unsubscr...@cloudstack.apache.org
