We have Xena release installed on Ubuntu Openstack, Lately we are getting "504 Gateway Timeout error ", As the we moved from 1 node to 3 node Open Stack

i do not see any error in haproxy , neither there is a time out when i ping external-VIP-IP configured.

Apache 2 are also loaded, tried to delete the Horizon Container and created it again, but no errors, Still the same errors.

Any guesses on that

Regards

Adivya Singh