Simple Flow Example

This example runs a local Docker topology with four Nextmini dataplane nodes (node1 to node4), one controller, and Postgres. The behavior is defined in examples/simple-flow/controller-config.toml: TCP transport, FIFO scheduler, flow_transport = "lossless_unicast", and three controller-driven flows from node 1 to node 2.

From the repository root:

cd examples/simple-flow
docker compose build
docker compose up

When startup settles, verify that all services are running:

docker compose ps

Check that the controller has registered all four dataplane nodes:

docker exec postgres psql -U pgusr -d nextmini -c "SELECT COUNT(*) AS nodes_connected FROM nodes;"

The expected count is 4.

You can also verify dataplane addressing from the default 10.0.0.0/16 assignment:

docker exec node1 ip addr show | rg "10\\.0\\.0\\.1"
docker exec node2 ip addr show | rg "10\\.0\\.0\\.2"

Stop the example when finished:

docker compose down