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Create toggle for using headless service DNS name as CN #7

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Create toggle for using headless service DNS name as CN #7

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9 changes: 8 additions & 1 deletion main.go
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@ var (
additionalDNSNames string
certDir string
clusterDomain string
headlessNameAsCN bool
hostname string
namespace string
podIP string
Expand All @@ -51,6 +52,7 @@ func main() {
flag.StringVar(&additionalDNSNames, "additional-dnsnames", "", "additional dns names; comma separated")
flag.StringVar(&certDir, "cert-dir", "/etc/tls", "The directory where the TLS certs should be written")
flag.StringVar(&clusterDomain, "cluster-domain", "cluster.local", "Kubernetes cluster domain")
flag.BoolVar(&headlessNameAsCN, "headless-name-as-cn", false, "If a headless domain name is provided, use it as CN")
flag.StringVar(&hostname, "hostname", "", "hostname as defined by pod.spec.hostname")
flag.StringVar(&namespace, "namespace", "default", "namespace as defined by pod.metadata.namespace")
flag.StringVar(&podName, "pod-name", "", "name as defined by pod.metadata.name")
Expand Down Expand Up @@ -214,7 +216,12 @@ func main() {
func defaultDNSNames(ip, hostname, subdomain, namespace, clusterDomain string) []string {
ns := []string{podDomainName(ip, namespace, clusterDomain)}
if hostname != "" && subdomain != "" {
ns = append(ns, podHeadlessDomainName(hostname, subdomain, namespace, clusterDomain))
headlessName := podHeadlessDomainName(hostname, subdomain, namespace, clusterDomain)
if headlessNameAsCN {
ns = append([]string{headlessName}, ns...)
} else {
ns = append(ns, headlessName)
}
}
return ns
}
Expand Down