func CreateCertsAndConfigForClients(cfg kubeadmapi.API, clientNames []string, caKey *rsa.PrivateKey, caCert *x509.Certificate) (map[string]*clientcmdapi.Config, error) {
basicClientConfig := kubeadmutil.CreateBasicClientConfig(
"kubernetes",
// TODO this is not great, but there is only one address we can use here
// so we'll pick the first one, there is much of chance to have an empty
// slice by the time this gets called
fmt.Sprintf("https://%s:%d", cfg.AdvertiseAddresses[0], cfg.BindPort),
certutil.EncodeCertPEM(caCert),
)
configs := map[string]*clientcmdapi.Config{}
for _, client := range clientNames {
key, cert, err := newClientKeyAndCert(caCert, caKey)
if err != nil {
return nil, fmt.Errorf("failure while creating %s client certificate - [%v]", client, err)
}
config := kubeadmutil.MakeClientConfigWithCerts(
basicClientConfig,
"kubernetes",
client,
certutil.EncodePrivateKeyPEM(key),
certutil.EncodeCertPEM(cert),
)
configs[client] = config
}
return configs, nil
}
func writeKeysAndCert(pkiPath string, name string, key *rsa.PrivateKey, cert *x509.Certificate) error {
var (
publicKeyPath = path.Join(pkiPath, fmt.Sprintf("%s-pub.pem", name))
privateKeyPath = path.Join(pkiPath, fmt.Sprintf("%s-key.pem", name))
certificatePath = path.Join(pkiPath, fmt.Sprintf("%s.pem", name))
)
if key != nil {
if err := certutil.WriteKey(privateKeyPath, certutil.EncodePrivateKeyPEM(key)); err != nil {
return fmt.Errorf("unable to write private key file (%q) [%v]", privateKeyPath, err)
}
if pubKey, err := certutil.EncodePublicKeyPEM(&key.PublicKey); err == nil {
if err := certutil.WriteKey(publicKeyPath, pubKey); err != nil {
return fmt.Errorf("unable to write public key file (%q) [%v]", publicKeyPath, err)
}
} else {
return fmt.Errorf("unable to encode public key to PEM [%v]", err)
}
}
if cert != nil {
if err := certutil.WriteCert(certificatePath, certutil.EncodeCertPEM(cert)); err != nil {
return fmt.Errorf("unable to write certificate file (%q) [%v]", certificatePath, err)
}
}
return nil
}
func createControllerManagerKubeconfigSecret(clientset *client.Clientset, namespace, name, svcName, kubeconfigName string, entKeyPairs *entityKeyPairs, dryRun bool) (*api.Secret, error) {
config := kubeadmkubeconfigphase.MakeClientConfigWithCerts(
fmt.Sprintf("https://%s", svcName),
name,
"federation-controller-manager",
certutil.EncodeCertPEM(entKeyPairs.ca.Cert),
certutil.EncodePrivateKeyPEM(entKeyPairs.controllerManager.Key),
certutil.EncodeCertPEM(entKeyPairs.controllerManager.Cert),
)
return util.CreateKubeconfigSecret(clientset, config, namespace, kubeconfigName, dryRun)
}
func createAPIServerCredentialsSecret(clientset *client.Clientset, namespace, credentialsName string, entKeyPairs *entityKeyPairs) (*api.Secret, error) {
// Build the secret object with API server credentials.
secret := &api.Secret{
ObjectMeta: api.ObjectMeta{
Name: credentialsName,
Namespace: namespace,
},
Data: map[string][]byte{
"ca.crt": certutil.EncodeCertPEM(entKeyPairs.ca.Cert),
"server.crt": certutil.EncodeCertPEM(entKeyPairs.server.Cert),
"server.key": certutil.EncodePrivateKeyPEM(entKeyPairs.server.Key),
},
}
// Boilerplate to create the secret in the host cluster.
return clientset.Core().Secrets(namespace).Create(secret)
}
func createKubeConfigFileForClient(masterEndpoint, kubeConfigFilePath string, config *certutil.Config, caCert *x509.Certificate, caKey *rsa.PrivateKey) error {
key, cert, err := certphase.NewClientKeyAndCert(config, caCert, caKey)
if err != nil {
return fmt.Errorf("failure while creating %s client certificate [%v]", config.CommonName, err)
}
kubeConfig := MakeClientConfigWithCerts(
masterEndpoint,
"kubernetes",
config.CommonName,
certutil.EncodeCertPEM(caCert),
certutil.EncodePrivateKeyPEM(key),
certutil.EncodeCertPEM(cert),
)
// Write it now to a file
return WriteKubeconfigToDisk(kubeConfigFilePath, kubeConfig)
}
func updateKubeconfig(config util.AdminConfig, name, endpoint string, entKeyPairs *entityKeyPairs, dryRun bool) error {
po := config.PathOptions()
kubeconfig, err := po.GetStartingConfig()
if err != nil {
return err
}
// Populate API server endpoint info.
cluster := clientcmdapi.NewCluster()
// Prefix "https" as the URL scheme to endpoint.
if !strings.HasPrefix(endpoint, "https://") {
endpoint = fmt.Sprintf("https://%s", endpoint)
}
cluster.Server = endpoint
cluster.CertificateAuthorityData = certutil.EncodeCertPEM(entKeyPairs.ca.Cert)
// Populate credentials.
authInfo := clientcmdapi.NewAuthInfo()
authInfo.ClientCertificateData = certutil.EncodeCertPEM(entKeyPairs.admin.Cert)
authInfo.ClientKeyData = certutil.EncodePrivateKeyPEM(entKeyPairs.admin.Key)
authInfo.Username = AdminCN
// Populate context.
context := clientcmdapi.NewContext()
context.Cluster = name
context.AuthInfo = name
// Update the config struct with API server endpoint info,
// credentials and context.
kubeconfig.Clusters[name] = cluster
kubeconfig.AuthInfos[name] = authInfo
kubeconfig.Contexts[name] = context
if !dryRun {
// Write the update kubeconfig.
if err := clientcmd.ModifyConfig(po, *kubeconfig, true); err != nil {
return err
}
}
return nil
}