A virtual network management tool.
To install the cli tool, just run:
go get -u github.com/whyrusleeping/go-netdef/netdef
This only runs on linux right now, and requires a working installation of openvswitch.
Netdef can be used as a package, but it also provides a command line tool that operates on json formatted 'netdef' specifications. An example such file might look like:
{
"networks": [{
"name":"seattle",
"iprange": "10.1.1.0/24"
}],
"peers": [
{
"name":"wolf",
"links": {
"seattle": {},
}
},
{
"name":"bear",
"links": {
"seattle": {
"latency": "10ms"
}
}
}
],
}This specification defines a network named 'seattle' that allocates ip addresses for its peers in the 10.1.1.0/24 subnet, and two peers named 'wolf' and 'bear'. It then defines that 'wolf' has a link to 'seattle' with default settings, and that 'bear' has a link to 'seattle' with a 10ms latency on it.
To create this network, save the json to a file example.nd and run:
sudo netdef create example.nd
This will set up all the namespaces needed and switches, and connect them as described. Once setup, you can run commands on a given peer by doing:
sudo ip netns exec wolf ping 10.1.1.2
To teardown the network, run:
sudo netdef cleanup example.nd
Theres a lot more I want to do here, this is a partial list (roughly in order of priority):
- Actually implement latencies/bandwidth/packet-loss with go-ctrlnet
- Better permissions (running everything as root sucks)
- Network to network links
- Better validation of config
- Multi-host namespaces (via openvswitch)
- Different 'bridge' implementations (i.e. brctl)
MIT