Is it possible to create a multiplayer server that consists of multiple containers? For example, for my game, a "match" is run by 3 different Docker containers which communicate with one another. Is this possible, or would I instead want to have one docker container that has 3 docker containers running within it?
@aaron@regression.gg at this point we don't support privileged containers, due to security concerns. Generally, having more than one container on the same game server session host has an impact on the way we manage game server lifecycle, e.g. how can you determine which of the containers is the game server and how do you know when the game server has ended? Curious on the game engine/architecture you are using btw, can you share more?
Potential solutions for your scenario:
- include all processes on the same container engine and manage them via a utility like supervisord
- utilize alternative technologies, like PlayFab/thundernetes: Thundernetes makes it easy to run your game servers on Kubernetes (github.com) (disclaimer, this project is in Beta). Still, this is less "managed" than PlayFab so it's probably not what you want
Since the Docker Containers in a single VM are created base on your server build configuration and they are all the same, so it is not possible to create a multiplayer server that consists of multiple different containers. I am not an expert on Docker, if you can create docker containers inside a container, you can have a try. It is recommended to implement all server logic in a container.
I see, thanks @Gosen Gao. It seems that Docker within Docker is possible with a privileged container, enabled by running Docker with the --privileged command. Any idea if this is possible with Playfab?
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