host_containers

Example: Containerized hosts, but not switch

In this example, we have containerized all hosts. The switches are not containerized, but connected to network bridges via virtual ethernet (veth) pairs.

Running the example

To build the topology, start containers and run the controller, run:

make

To start a tcp client, run:

make tcp-client

Alternatively, you can choose the iperf3 or netcat container image in the build.sh file, by uncommenting the corresponding IMAGE and ARGS variables. Then, to run the corresponding client:

make iperf-client
# OR
make netcat-client

To migrate the container from the source host to the target host, and update the switch accordingly, run:

make migrate SOURCE=<> TARGET=<>

To cleanup the topology, networks, pods, and containers, run:

make clean

To show logs of a given container, run:

sudo podman logs -f <host_id>

To show logs of e.g. the s1 switch, run:

tail -f ../../load_balancer/logs/s1.log

Troubleshooting

This example requires Podman version 5.2.0 or newer, which includes a patch that enables container restore into a Pod.

Error: cannot add container f96670b26e53e70f7f451191ea39a093c940c6c48b47218aeeef1396cb860042 to pod h2-pod: no such pod