integration/cluster.go
func (m *member) Restart(t testing.TB) error {
	lg.Info(
		"restarting a member",
		zap.String("name", m.Name),
		zap.Strings("advertise-peer-urls", m.PeerURLs.StringSlice()),
		zap.Strings("listen-client-urls", m.ClientURLs.StringSlice()),
		zap.String("grpc-address", m.grpcAddr),
	)
	newPeerListeners := make([]net.Listener, 0)
	for _, ln := range m.PeerListeners {
		newPeerListeners = append(newPeerListeners, NewListenerWithAddr(t, ln.Addr().String()))
	}
	m.PeerListeners = newPeerListeners
	newClientListeners := make([]net.Listener, 0)
	for _, ln := range m.ClientListeners {
		newClientListeners = append(newClientListeners, NewListenerWithAddr(t, ln.Addr().String()))
	}
	m.ClientListeners = newClientListeners

	if m.grpcListener != nil {
		if err := m.listenGRPC(); err != nil {
			t.Fatal(err)
		}
	}

	err := m.Launch()
	lg.Info(
		"restarted a member",
		zap.String("name", m.Name),
		zap.Strings("advertise-peer-urls", m.PeerURLs.StringSlice()),
		zap.Strings("listen-client-urls", m.ClientURLs.StringSlice()),
		zap.String("grpc-address", m.grpcAddr),
		zap.Error(err),
	)
	return err
}
func (m *member) Restart(t testing.TB) error {
	lg.Info(
		"restarting a member",
		zap.String("name", m.Name),
		zap.Strings("advertise-peer-urls", m.PeerURLs.StringSlice()),
		zap.Strings("listen-client-urls", m.ClientURLs.StringSlice()),
		zap.String("grpc-address", m.grpcAddr),
	)
	newPeerListeners := make([]net.Listener, 0)
	for _, ln := range m.PeerListeners {
		newPeerListeners = append(newPeerListeners, NewListenerWithAddr(t, ln.Addr().String()))
	}
	m.PeerListeners = newPeerListeners
	newClientListeners := make([]net.Listener, 0)
	for _, ln := range m.ClientListeners {
		newClientListeners = append(newClientListeners, NewListenerWithAddr(t, ln.Addr().String()))
	}
	m.ClientListeners = newClientListeners

	if m.grpcListener != nil {
		if err := m.listenGRPC(); err != nil {
			t.Fatal(err)
		}
	}

	err := m.Launch()
	lg.Info(
		"restarted a member",
		zap.String("name", m.Name),
		zap.Strings("advertise-peer-urls", m.PeerURLs.StringSlice()),
		zap.Strings("listen-client-urls", m.ClientURLs.StringSlice()),
		zap.String("grpc-address", m.grpcAddr),
		zap.Error(err),
	)
	return err
}
// Restart starts the member using the preserved data dir.