This repository is no longer maintained. The core logic has been merged into podman as of v4.0.
This plugin collects the port information of the container and sends information to a server on the host operating system. The information is used by the server to open and close port mappings on the host. It is only meant to be used in a podman-machine virtual machine. The plugin can be enabled with the following stanza:
{
"type": "podman-machine",
"capabilities": {
"portMappings": true
}
},
The server in question is gvisor-tap-vsock. The plugin connects to the server via RESTful API calls on container start and stop (or die). The plugin converts the port data information into a JSON payload for the API endpoint. On container start, ports on the host are opened and mapped; on stop, they are closed.