I lab configuring 2 region RegionOne, RegionTwo.  2 install 2 controllers node.

RegionOne: control3: Horizon, Keystone, Glance.

RegionTwo: control4: Glance.

I can list image when I use CLI to each regions.

However when I login to RegionTwo on Horizon. It show problem.

I stuck for several weeks . Hope can be helped.

Thank and Regards