diff --git a/fdbclient/CMakeLists.txt b/fdbclient/CMakeLists.txt
index 1349a66810..ca78b6986c 100644
--- a/fdbclient/CMakeLists.txt
+++ b/fdbclient/CMakeLists.txt
@@ -21,6 +21,7 @@ set(FDBCLIENT_SRCS
   CommitTransaction.h
   ConfigKnobs.cpp
   ConfigKnobs.h
+  ConfigTransactionInterface.cpp
   ConfigTransactionInterface.h
   CoordinationInterface.h
   DatabaseBackupAgent.actor.cpp
diff --git a/fdbclient/ConfigTransactionInterface.cpp b/fdbclient/ConfigTransactionInterface.cpp
new file mode 100644
index 0000000000..a837a7b26d
--- /dev/null
+++ b/fdbclient/ConfigTransactionInterface.cpp
@@ -0,0 +1,45 @@
+/*
+ * ConfigTransactionInterface.cpp
+ *
+ * This source file is part of the FoundationDB open source project
+ *
+ * Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fdbclient/ConfigTransactionInterface.h"
+#include "fdbclient/CoordinationInterface.h"
+#include "flow/IRandom.h"
+
+ConfigTransactionInterface::ConfigTransactionInterface() : _id(deterministicRandom()->randomUniqueID()) {}
+
+void ConfigTransactionInterface::setupWellKnownEndpoints() {
+	getVersion.makeWellKnownEndpoint(WLTOKEN_CONFIGTXN_GETVERSION, TaskPriority::Coordination);
+	get.makeWellKnownEndpoint(WLTOKEN_CONFIGTXN_GET, TaskPriority::Coordination);
+	getRange.makeWellKnownEndpoint(WLTOKEN_CONFIGTXN_GETRANGE, TaskPriority::Coordination);
+	commit.makeWellKnownEndpoint(WLTOKEN_CONFIGTXN_COMMIT, TaskPriority::Coordination);
+}
+
+ConfigTransactionInterface::ConfigTransactionInterface(NetworkAddress const& remote)
+  : getVersion(Endpoint({ remote }, WLTOKEN_CONFIGTXN_GETVERSION)), get(Endpoint({ remote }, WLTOKEN_CONFIGTXN_GET)),
+    getRange(Endpoint({ remote }, WLTOKEN_CONFIGTXN_GETRANGE)), commit(Endpoint({ remote }, WLTOKEN_CONFIGTXN_COMMIT)) {
+}
+
+bool ConfigTransactionInterface::operator==(ConfigTransactionInterface const& rhs) const {
+	return _id == rhs._id;
+}
+
+bool ConfigTransactionInterface::operator!=(ConfigTransactionInterface const& rhs) const {
+	return !(*this == rhs);
+}
diff --git a/fdbclient/ConfigTransactionInterface.h b/fdbclient/ConfigTransactionInterface.h
index a9cd4c66dc..233e85d030 100644
--- a/fdbclient/ConfigTransactionInterface.h
+++ b/fdbclient/ConfigTransactionInterface.h
@@ -128,25 +128,22 @@ struct ConfigTransactionGetRangeRequest {
 };
 
 struct ConfigTransactionInterface {
+	UID _id;
+
+public:
 	static constexpr FileIdentifier file_identifier = 982485;
 	struct RequestStream<ConfigTransactionGetVersionRequest> getVersion;
 	struct RequestStream<ConfigTransactionGetRequest> get;
 	struct RequestStream<ConfigTransactionGetRangeRequest> getRange;
 	struct RequestStream<ConfigTransactionCommitRequest> commit;
 
-	ConfigTransactionInterface() = default;
+	ConfigTransactionInterface();
+	void setupWellKnownEndpoints();
+	ConfigTransactionInterface(NetworkAddress const& remote);
 
-	void setupWellKnownEndpoints() {
-		getVersion.makeWellKnownEndpoint(WLTOKEN_CONFIGTXN_GETVERSION, TaskPriority::Coordination);
-		get.makeWellKnownEndpoint(WLTOKEN_CONFIGTXN_GET, TaskPriority::Coordination);
-		getRange.makeWellKnownEndpoint(WLTOKEN_CONFIGTXN_GETRANGE, TaskPriority::Coordination);
-		commit.makeWellKnownEndpoint(WLTOKEN_CONFIGTXN_COMMIT, TaskPriority::Coordination);
-	}
-
-	ConfigTransactionInterface(NetworkAddress const& remote)
-	  : getVersion(Endpoint({ remote }, WLTOKEN_CONFIGTXN_GETVERSION)),
-	    get(Endpoint({ remote }, WLTOKEN_CONFIGTXN_GET)), getRange(Endpoint({ remote }, WLTOKEN_CONFIGTXN_GETRANGE)),
-	    commit(Endpoint({ remote }, WLTOKEN_CONFIGTXN_COMMIT)) {}
+	bool operator==(ConfigTransactionInterface const& rhs) const;
+	bool operator!=(ConfigTransactionInterface const& rhs) const;
+	UID id() const { return _id; }
 
 	template <class Ar>
 	void serialize(Ar& ar) {
diff --git a/fdbserver/ConfigDatabaseUnitTests.actor.cpp b/fdbserver/ConfigDatabaseUnitTests.actor.cpp
index a9e11bbd48..c2d14e0c92 100644
--- a/fdbserver/ConfigDatabaseUnitTests.actor.cpp
+++ b/fdbserver/ConfigDatabaseUnitTests.actor.cpp
@@ -152,12 +152,18 @@ Future<Void> addTestGlobalSetMutation(ConfigStore& configStore, Version& lastWri
 
 class LocalConfigEnvironment {
 	LocalConfiguration localConfiguration;
+	UID id;
 
 public:
 	LocalConfigEnvironment(std::string const& configPath, std::map<Key, Value> const& manualKnobOverrides)
-	  : localConfiguration(configPath, manualKnobOverrides) {}
+	  : localConfiguration(configPath, manualKnobOverrides), id(deterministicRandom()->randomUniqueID()) {}
 
-	Future<Void> setup() { return localConfiguration.initialize("./", deterministicRandom()->randomUniqueID()); }
+	Future<Void> setup() { return localConfiguration.initialize("./", id); }
+
+	Future<Void> restart(std::string const& newConfigPath) {
+		localConfiguration = LocalConfiguration(newConfigPath, {});
+		return setup();
+	}
 
 	template <class TestType, class... Args>
 	Future<Void> run(Args&&... args) {
diff --git a/fdbserver/LocalConfiguration.actor.cpp b/fdbserver/LocalConfiguration.actor.cpp
index 550f4d7c94..e6c0600031 100644
--- a/fdbserver/LocalConfiguration.actor.cpp
+++ b/fdbserver/LocalConfiguration.actor.cpp
@@ -360,6 +360,10 @@ LocalConfiguration::LocalConfiguration(std::string const& configPath, std::map<K
 LocalConfiguration::LocalConfiguration(std::string const& configPath, std::map<Key, Value> const& manualKnobOverrides)
   : impl(std::make_unique<LocalConfigurationImpl>(configPath, manualKnobOverrides)) {}
 
+LocalConfiguration::LocalConfiguration(LocalConfiguration&&) = default;
+
+LocalConfiguration& LocalConfiguration::operator=(LocalConfiguration&&) = default;
+
 LocalConfiguration::~LocalConfiguration() = default;
 
 Future<Void> LocalConfiguration::initialize(std::string const& dataFolder, UID id) {
diff --git a/fdbserver/LocalConfiguration.h b/fdbserver/LocalConfiguration.h
index 369f0e8b3b..d513550fe7 100644
--- a/fdbserver/LocalConfiguration.h
+++ b/fdbserver/LocalConfiguration.h
@@ -46,6 +46,8 @@ class LocalConfiguration {
 public:
 	LocalConfiguration(std::string const& configPath, std::map<Key, Value> const& manualKnobOverrides);
 	LocalConfiguration(std::string const& configPath, std::map<Key, Value>&& manualKnobOverrides);
+	LocalConfiguration(LocalConfiguration&&);
+	LocalConfiguration& operator=(LocalConfiguration&&);
 	~LocalConfiguration();
 	Future<Void> initialize(std::string const& dataFolder, UID id);
 	FlowKnobs const& getFlowKnobs() const;