@girish
UPDATE: Finally found the culprit the was a huge backup file in /var/backups/snapshot#
Did the internal DNS restart steps, restarted docker and my sites are working again. Still having trouble accessing the cloudron admin page, complaint about certificates etc. will wait and see if this resolves itself.
Dimitri
UPDATE: /home/yellowtent/box/setup/start.sh did the trick cloudron dashboard also available again