Root CAs can be used for backend without TLS (#6711)

cmd/certs.go

@@ -150,24 +150,20 @@ func loadX509KeyPair(certFile, keyFile string) (tls.Certificate, error) {
 	return cert, nil
 }
 
-func getSSLConfig() (x509Certs []*x509.Certificate, rootCAs *x509.CertPool, c *certs.Certs, secureConn bool, err error) {
+func getTLSConfig() (x509Certs []*x509.Certificate, c *certs.Certs, secureConn bool, err error) {
 	if !(isFile(getPublicCertFile()) && isFile(getPrivateKeyFile())) {
-		return nil, nil, nil, false, nil
+		return nil, nil, false, nil
 	}
 
 	if x509Certs, err = parsePublicCertFile(getPublicCertFile()); err != nil {
-		return nil, nil, nil, false, err
+		return nil, nil, false, err
 	}
 
 	c, err = certs.New(getPublicCertFile(), getPrivateKeyFile(), loadX509KeyPair)
 	if err != nil {
-		return nil, nil, nil, false, err
-	}
-
-	if rootCAs, err = getRootCAs(getCADir()); err != nil {
-		return nil, nil, nil, false, err
+		return nil, nil, false, err
 	}
 
 	secureConn = true
-	return x509Certs, rootCAs, c, secureConn, nil
+	return x509Certs, c, secureConn, nil
 }

cmd/gateway-main.go

@@ -157,10 +157,14 @@ func StartGateway(ctx *cli.Context, gw Gateway) {
 	// Create certs path.
 	logger.FatalIf(createConfigDir(), "Unable to create configuration directories")
 
-	// Check and load SSL certificates.
+	// Check and load TLS certificates.
 	var err error
-	globalPublicCerts, globalRootCAs, globalTLSCerts, globalIsSSL, err = getSSLConfig()
-	logger.FatalIf(err, "Invalid SSL certificate file")
+	globalPublicCerts, globalTLSCerts, globalIsSSL, err = getTLSConfig()
+	logger.FatalIf(err, "Invalid TLS certificate file")
+
+	// Check and load Root CAs.
+	globalRootCAs, err = getRootCAs(getCADir())
+	logger.FatalIf(err, "Failed to read root CAs (%v)", err)
 
 	// Set system resources to maximum.
 	logger.LogIf(context.Background(), setMaxResources())

cmd/server-main.go

@@ -227,11 +227,15 @@ func serverMain(ctx *cli.Context) {
 	// Create certs path.
 	logger.FatalIf(createConfigDir(), "Unable to initialize configuration files")
 
-	// Check and load SSL certificates.
+	// Check and load TLS certificates.
 	var err error
-	globalPublicCerts, globalRootCAs, globalTLSCerts, globalIsSSL, err = getSSLConfig()
+	globalPublicCerts, globalTLSCerts, globalIsSSL, err = getTLSConfig()
 	logger.FatalIf(err, "Unable to load the TLS configuration")
 
+	// Check and load Root CAs.
+	globalRootCAs, err = getRootCAs(getCADir())
+	logger.FatalIf(err, "Failed to read root CAs (%v)", err)
+
 	// Is distributed setup, error out if no certificates are found for HTTPS endpoints.
 	if globalIsDistXL {
 		if globalEndpoints.IsHTTPS() && !globalIsSSL {