If the Cassandra database or the RabbitMQ event broker runs as Docker container, you must create a registry entry for the Docker instance and update the values according to your environment.

docker docker-name
    placement-vsphere vsphere-address-registry-entry
    placement-address static-IP-address
    ovf-url		URL	
    ssh-password ssh-password
    ntp ntp-address	

Note:

If you already set either the ssh-password or the ntp-address as global properties at the beginning of the registry file, you do not need to specify them in this registry entry.

The placement-address property name is optional. Provide it if you use static network addresses.

The ovf-url property name is optional. Provide it if you want to specify a custom location for the OVA deployment.

Prepare the vCloud Availability Installer Appliance for Docker Hosts

Before you start the automated vCloud Availability deployment, you must start the Docker service on your vCloud Availability Installer Appliance and download Cassandra and RabbitMQ images.

To start the Docker service on the vCloud Availability Installer Appliance, run the systemctl start docker command.

Download the Cassandra image by running the docker pull cassandra:3.9 command.

Download the RabbitMQ image by running the docker pull rabbitmq:3.4 command.