etcdmain, embed: --auto-peer-tls and --auto-tls for v2 proxy

Fixes #7930

embed/config.go

@@ -20,6 +20,7 @@ import (
 	"net"
 	"net/http"
 	"net/url"
+	"path/filepath"
 	"strings"
 
 	"github.com/coreos/etcd/etcdserver"
@@ -393,6 +394,34 @@ func (cfg Config) defaultClientHost() bool {
 	return len(cfg.ACUrls) == 1 && cfg.ACUrls[0].String() == DefaultAdvertiseClientURLs
 }
 
+func (cfg *Config) ClientSelfCert() (err error) {
+	if cfg.ClientAutoTLS && cfg.ClientTLSInfo.Empty() {
+		chosts := make([]string, len(cfg.LCUrls))
+		for i, u := range cfg.LCUrls {
+			chosts[i] = u.Host
+		}
+		cfg.ClientTLSInfo, err = transport.SelfCert(filepath.Join(cfg.Dir, "fixtures", "client"), chosts)
+		return err
+	} else if cfg.ClientAutoTLS {
+		plog.Warningf("ignoring client auto TLS since certs given")
+	}
+	return nil
+}
+
+func (cfg *Config) PeerSelfCert() (err error) {
+	if cfg.PeerAutoTLS && cfg.PeerTLSInfo.Empty() {
+		phosts := make([]string, len(cfg.LPUrls))
+		for i, u := range cfg.LPUrls {
+			phosts[i] = u.Host
+		}
+		cfg.PeerTLSInfo, err = transport.SelfCert(filepath.Join(cfg.Dir, "fixtures", "peer"), phosts)
+		return err
+	} else if cfg.PeerAutoTLS {
+		plog.Warningf("ignoring peer auto TLS since certs given")
+	}
+	return nil
+}
+
 // UpdateDefaultClusterFromName updates cluster advertise URLs with, if available, default host,
 // if advertise URLs are default values(localhost:2379,2380) AND if listen URL is 0.0.0.0.
 // e.g. advertise peer URL localhost:2380 or listen peer URL 0.0.0.0:2380

embed/etcd.go

@@ -22,7 +22,6 @@ import (
 	"net"
 	"net/http"
 	"net/url"
-	"path/filepath"
 	"sync"
 	"time"
 
@@ -248,19 +247,9 @@ func (e *Etcd) Close() {
 func (e *Etcd) Err() <-chan error { return e.errc }
 
 func startPeerListeners(cfg *Config) (peers []*peerListener, err error) {
-	if cfg.PeerAutoTLS && cfg.PeerTLSInfo.Empty() {
-		phosts := make([]string, len(cfg.LPUrls))
-		for i, u := range cfg.LPUrls {
-			phosts[i] = u.Host
-		}
-		cfg.PeerTLSInfo, err = transport.SelfCert(filepath.Join(cfg.Dir, "fixtures", "peer"), phosts)
-		if err != nil {
-			plog.Fatalf("could not get certs (%v)", err)
-		}
-	} else if cfg.PeerAutoTLS {
-		plog.Warningf("ignoring peer auto TLS since certs given")
+	if err = cfg.PeerSelfCert(); err != nil {
+		plog.Fatalf("could not get certs (%v)", err)
 	}
-
 	if !cfg.PeerTLSInfo.Empty() {
 		plog.Infof("peerTLS: %s", cfg.PeerTLSInfo)
 	}
@@ -302,19 +291,9 @@ func startPeerListeners(cfg *Config) (peers []*peerListener, err error) {
 }
 
 func startClientListeners(cfg *Config) (sctxs map[string]*serveCtx, err error) {
-	if cfg.ClientAutoTLS && cfg.ClientTLSInfo.Empty() {
-		chosts := make([]string, len(cfg.LCUrls))
-		for i, u := range cfg.LCUrls {
-			chosts[i] = u.Host
-		}
-		cfg.ClientTLSInfo, err = transport.SelfCert(filepath.Join(cfg.Dir, "fixtures", "client"), chosts)
-		if err != nil {
-			plog.Fatalf("could not get certs (%v)", err)
-		}
-	} else if cfg.ClientAutoTLS {
-		plog.Warningf("ignoring client auto TLS since certs given")
+	if err = cfg.ClientSelfCert(); err != nil {
+		plog.Fatalf("could not get certs (%v)", err)
 	}
-
 	if cfg.EnablePprof {
 		plog.Infof("pprof is enabled under %s", debugutil.HTTPPrefixPProf)
 	}

etcdmain/etcd.go

@@ -205,6 +205,8 @@ func startProxy(cfg *config) error {
 		// for both client and peer connections.
 		clientTLSInfo = cfg.PeerTLSInfo
 	}
+	clientTLSInfo.InsecureSkipVerify = cfg.ClientAutoTLS
+	cfg.PeerTLSInfo.InsecureSkipVerify = cfg.PeerAutoTLS
 
 	pt, err := transport.NewTimeoutTransport(clientTLSInfo, time.Duration(cfg.ProxyDialTimeoutMs)*time.Millisecond, time.Duration(cfg.ProxyReadTimeoutMs)*time.Millisecond, time.Duration(cfg.ProxyWriteTimeoutMs)*time.Millisecond)
 	if err != nil {
@@ -212,6 +214,9 @@ func startProxy(cfg *config) error {
 	}
 	pt.MaxIdleConnsPerHost = httpproxy.DefaultMaxIdleConnsPerHost
 
+	if err = cfg.PeerSelfCert(); err != nil {
+		plog.Fatalf("could not get certs (%v)", err)
+	}
 	tr, err := transport.NewTimeoutTransport(cfg.PeerTLSInfo, time.Duration(cfg.ProxyDialTimeoutMs)*time.Millisecond, time.Duration(cfg.ProxyReadTimeoutMs)*time.Millisecond, time.Duration(cfg.ProxyWriteTimeoutMs)*time.Millisecond)
 	if err != nil {
 		return err