Hello! I am trying to set up a Gluu Server on AWS, using an ELB with 3 EC2 instances (1x ClusterManager, 1 Master Node and (at least) 1 Replication Node) - plus a Bastion Host for SSH login, since all EC2 Instances are in a private subnet and only the ELB has access to the internet. For outbound internet access of the EC2 instances (i.e. security updates etc.) I am using NAT Gateway. SSH connection to all the EC2 instances via the Bastion is working as well. While installation of the cluster manager I followed this guide: https://gluu.org/docs/cm/ After installing the cluster manager packages and opening all the needed ports I am connecting to the GUI of the CM via an SSH Tunnel using the following command: ssh -i "/path/to/my/key.pem" -L 5000:localhost:5000 ubuntu@172.31.1.199 ssh -i "~/.ssh/mykey.pem" -L 5000:localhost:5000 -N ubuntu@172.31.1.182 This is a SSH Tunnel to the Bastion Host (172.31.1.199) and then to the Cluster Manager (172.31.1.182). Connection works, I can open the GUI of the Clustermanager with localhost:5000. But when I am following the Installation Wizard, at some point the CM is prompting me with the following error message (at Dashboard): _SSH connection to ClusterManager failed. Please check if your pub key is asdded to /root/.ssh/authorized_keys on this server. Reason: No authentication methods available _ SSH Keys has been placed at all the servers (for testing purposes) and has been added to the authorized_keys. Any help with this issue is much appreciated. Kind Regards, Flo