Function getNetworkNamespaceIPs

integration/nri_linux_test.go:226–257

(nsPath string)

}

func getNetworkNamespaceIPs(nsPath string) []string {
	ips := []string{}
	sandboxNs, err := netns.GetFromPath(nsPath)
	if err != nil {
		return ips
	}
	// to avoid golang problem with goroutines we create the socket in the
	// namespace and use it directly
	nhNs, err := netlink.NewHandleAt(sandboxNs)
	if err != nil {
		return ips
	}

	// there is a convention the interface inside the Pod is always named eth0
	// internal/cri/server/helpers.go: defaultIfName = "eth0"
	nsLink, err := nhNs.LinkByName("eth0")
	if err != nil {
		return ips
	}
	addrs, err := nhNs.AddrList(nsLink, netlink.FAMILY_ALL)
	if err != nil {
		return ips
	}
	for _, addr := range addrs {
		// ignore link local and loopback addresses
		// those are not added by the CNI
		if addr.IP.IsGlobalUnicast() {
			ips = append(ips, addr.IP.String())
		}
	}
	return ips
}