Well, I still do not understand your context. But I’ll summarize here what you need.
You need at least one Dgraph Zero and one Dgraph Alpha configured and running. If you have questions about commands, review the commands used in YAML for Docker. And you will have a sense of basic commands to start. Check Get started with Dgraph
Dgraph Ratel UI needs to access the HTTP port and usually is 8080. The address must be accessible and the port must be accessible as well. Then analyze firewall and other parameters of your operating system in relation to this.
If you are using virtual machine, you need to check forwarding and so on. These things are outside Dgraph’s scope.
Having a Dgraph Alpha Group (Zero and Alpha) running. You can access it normally. There’s no secret. If you are trying to create an HA configuration for example, distributed. I recommend analyzing YAMLs of that type.
Below is a schematic of how a Dgraph distributed organization is.
