Create 2 managers images
Steps to reproduce:
1. Connect to m1 and start cluster
2. Create and download snapshot
3. Upload and restore the snapshot on m2
4. Try to login the manager from the UI
As you can see, you'll fail to login the UI with the following message: "Error initializing user data, cannot load page"
Looks like the rest service failed to authenticate the manager's credentials
There is a simple workaround, which you can start the cluster after the restore process is finished. Then you will be able to login the UI
Probably it's just a minor bug which I'll need to start a cluster to login the UI.
Also, the bug is documented on the docs under "Upgrading Cluster" http://docs.getcloudify.org/4.1.0/manager/high-availability-clusters/
Close in doc.