nerdctlnet

Documentation

Overview

Package nerdctlnet implements a Gostwire decorator that discovers nerdctl-managed CNI networks and then decorates their corresponding network interfaces. Supported types of nerdctl/CNI networks are: “bridge”. Support for “macvlan” is currently blocked upstream in nerdctl as well the CNI plugins.

In case of “bridge” networks this decorator assigns nerdctl/CNI network names as alias names to the corresponding Linux-kernel bridges and also as a Gostwire-specific label.

This decorator also copies any network labels it finds into the corresponding network.Interface instances in a Gostwire discovery information model.

Index

• Constants
• func Decorate(ctx context.Context, allnetns network.NetworkNamespaces, ...)

Constants

const GostwireNetworkNameKey = dockernet.BridgeNameOptionName

GostwireNetworkNameKey defines the label key for storing the nerdctl "Docker" network name of bridge networks.

const NetworkConfigurationsDir = "/etc/cni/net.d"

NetworkConfigurationsGlob specifies the location only of the CNI network configuration list files.

const NetworkConfigurationsGlob = "nerdctl-*.conflist"

NetworkConfigurationsGlob specifies the pattern of the CNI network configuration list files.

Functions

func Decorate

func Decorate(
	ctx context.Context,
	allnetns network.NetworkNamespaces,
	allprocs model.ProcessTable,
	engines []*model.ContainerEngine,
)

Decorate decorates bridge network interfaces with alias names that are the names of their corresponding nerdctl-managed CNI "bridge" networks, where applicable (a copy is stored also in the labels in Gostwire's key namespace). Additionally, it copies over any user-defined network labels.