hostname:          "test.pod.hostname",
		hostDomain:        "",
		setHostnameAsFQDN: true,
		expectedHostname:  "test.pod.hostname",
		expectError:       false,
	}, {
		description:       "valid hostDomain, setHostnameAsFQDN false",
		hostname:          "test.pod.hostname",
		hostDomain:        "svc.subdomain.local",
		setHostnameAsFQDN: false,
		expectedHostname:  "test.pod.hostname",

func GetNodenameForKernel(hostname string, hostDomainName string, setHostnameAsFQDN *bool) (string, error) {
	kernelHostname := hostname
	// FQDN has to be 64 chars to fit in the Linux nodename kernel field (specification 64 chars and the null terminating char).
	const fqdnMaxLen = 64
	if len(hostDomainName) > 0 && setHostnameAsFQDN != nil && *setHostnameAsFQDN {
		fqdn := fmt.Sprintf("%s.%s", hostname, hostDomainName)