Applies to: 
Kyvos Enterprise 
Kyvos Cloud (SaaS on AWS) Kyvos AWS Marketplace
...
Prerequisites for Kyvos Manager server
Operating System:
Cloud:
CentOS 7.x, RHEL 7.x, and RHEL 8.x
On-prem:
CentOS 7.x, RHEL 7.x and RHEL 8.x
Ubuntu 18.04.5 LTS
Memory: 6 GB RAM or more
Storage Space: 30 GB or more
...
The following prerequisites are required for all nodes.
Operating System:
Cloud:
CentOS 7.x, RHEL 7.x,and RHEL 8.x
On-prem:
CentOS 7.x, RHEL 7.x,and RHEL 8.x
Ubuntu 18.04.5 LTS
All nodes must have a user account with common login credentials
All the nodes used for cluster creation must have:
SSH running (SSHD service)
Ensure that either the Iptables/firewall is disabled on each host of a cluster or the requisite ports should be accessible.
To disable Iptables/firewall, use the following commands on each host.
...