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- Ensure that your Docker or Containerd environment meets the minimum deployment requirements.
- Open all required ports on the hosts, as list in Port Usage for Bare-Metal Hosts, in addition to the ports required for firewalls.
- Ensure that there are no other processes using port 53 on the host system on which your host will be deployed. For example, some Ubuntu systems running local DNS cache (system-resolved) might occupy port 53, and your host might not function properly in this case.
- Dind (Docker-in-Docker) configuration is not supported for host deployments.
- For Red Hat 8.x and 9.x versions disable nm-cloud-setup.service with the command:
sudo systemctl disable nm-cloud-setup.service
- For Ubuntu 18 and Ubuntu 20 in which
systemd-resolvedis running, perform the following before deploying a host:
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