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Verify NTP time synchronization is used on the Gateway server to guarantee storage transaction handling and that the audit log timestamps match across servers. NTP is critical for the Swarm operation and should be used on all hosts interacting with Swarm.
Optionally, install and start Docker on the Gateway server to utilize video clipping and hybrid cloud on Gateway version 7.8 and higher.
Install docker-ce following instructions in https://docs.docker.com/engine/install/centos/.
Run any needed post-installation step to start Docker, such as enabling the systemd services:
Features will fail with SElinux set to "Enforced" on RHEL7 installations. Check the OS setting with the "getenforce" command. If this extra layer of security is not needed, reduce to "Permissive" or "Disabled" to allow features to proceed.