feat(dns): cluster API for reserving/releasing cluster domain in Uncloud DNS

go.mod

@@ -16,10 +16,10 @@ require (
 	github.com/distribution/reference v0.6.0
 	github.com/docker/cli v27.5.0+incompatible
 	github.com/docker/compose/v2 v2.31.0
-	github.com/docker/docker v27.5.0+incompatible
+	github.com/docker/docker v27.4.0-rc.2+incompatible
 	github.com/docker/go-connections v0.5.0
 	github.com/docker/go-units v0.5.0
-	github.com/google/go-containerregistry v0.20.3
+	github.com/google/go-containerregistry v0.20.2
 	github.com/hashicorp/memberlist v0.5.1
 	github.com/hashicorp/serf v0.10.1
 	github.com/ipfs/boxo v0.21.0

go.sum

@@ -5,8 +5,8 @@ cloud.google.com/go/auth v0.4.1/go.mod h1:QVBuVEKpCn4Zp58hzRGvL0tjRGU0YqdRTdCHM1
 cloud.google.com/go/auth/oauth2adapt v0.2.2 h1:+TTV8aXpjeChS9M+aTtN/TjdQnzJvmzKFt//oWu7HX4=
 cloud.google.com/go/auth/oauth2adapt v0.2.2/go.mod h1:wcYjgpZI9+Yu7LyYBg4pqSiaRkfEK3GQcpb7C/uyF1Q=
 cloud.google.com/go/compute v1.25.1 h1:ZRpHJedLtTpKgr3RV1Fx23NuaAEN1Zfx9hw1u4aJdjU=
-cloud.google.com/go/compute/metadata v0.6.0 h1:A6hENjEsCDtC1k8byVsgwvVcioamEHvZ4j01OwKxG9I=
+cloud.google.com/go/compute/metadata v0.5.0 h1:Zr0eK8JbFv6+Wi4ilXAR8FJ3wyNdpxHKJNPos6LTZOY=
-cloud.google.com/go/compute/metadata v0.6.0/go.mod h1:FjyFAW1MW0C203CEOMDTu3Dk1FlqW3Rga40jzHL4hfg=
+cloud.google.com/go/compute/metadata v0.5.0/go.mod h1:aHnloV2TPI38yx4s9+wAZhHykWvVCfu7hQbF+9CWoiY=
 cloud.google.com/go/iam v1.1.8 h1:r7umDwhj+BQyz0ScZMp4QrGXjSTI3ZINnpgU2nlB/K0=
 cloud.google.com/go/iam v1.1.8/go.mod h1:GvE6lyMmfxXauzNq8NbgJbeVQNspG+tcdL/W8QO1+zE=
 cloud.google.com/go/kms v1.16.0 h1:1yZsRPhmargZOmY+fVAh8IKiR9HzCb0U1zsxb5g2nRY=
@@ -262,8 +262,8 @@ github.com/docker/compose/v2 v2.31.0/go.mod h1:oQq3UDEdsnB3AUO72AxaoeLbkCgmUu1+8
 github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
 github.com/docker/distribution v2.8.3+incompatible h1:AtKxIZ36LoNK51+Z6RpzLpddBirtxJnzDrHLEKxTAYk=
 github.com/docker/distribution v2.8.3+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
-github.com/docker/docker v27.5.0+incompatible h1:um++2NcQtGRTz5eEgO6aJimo6/JxrTXC941hd05JO6U=
+github.com/docker/docker v27.4.0-rc.2+incompatible h1:9OJjVGtelk/zGC3TyKweJ29b9Axzh0s/0vtU4mneumE=
-github.com/docker/docker v27.5.0+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
+github.com/docker/docker v27.4.0-rc.2+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/docker-credential-helpers v0.8.2 h1:bX3YxiGzFP5sOXWc3bTPEXdEaZSeVMrFgOr3T+zrFAo=
 github.com/docker/docker-credential-helpers v0.8.2/go.mod h1:P3ci7E3lwkZg6XiHdRKft1KckHiO9a2rNtyFbZ/ry9M=
 github.com/docker/go v1.5.1-1.0.20160303222718-d30aec9fd63c h1:lzqkGL9b3znc+ZUgi7FlLnqjQhcXxkNM/quxIjBVMD0=
@@ -397,8 +397,8 @@ github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/google/go-containerregistry v0.20.3 h1:oNx7IdTI936V8CQRveCjaxOiegWwvM7kqkbXTpyiovI=
+github.com/google/go-containerregistry v0.20.2 h1:B1wPJ1SN/S7pB+ZAimcciVD+r+yV/l/DSArMxlbwseo=
-github.com/google/go-containerregistry v0.20.3/go.mod h1:w00pIgBRDVUDFM6bq+Qx8lwNWK+cxgCuX1vd3PIBDNI=
+github.com/google/go-containerregistry v0.20.2/go.mod h1:z38EKdKh4h7IP2gSfUUqEvalZBqs6AoLeWfUy34nQC8=
 github.com/google/go-tpm v0.9.0 h1:sQF6YqWMi+SCXpsmS3fd21oPy/vSddwZry4JnmltHVk=
 github.com/google/go-tpm v0.9.0/go.mod h1:FkNVkc6C+IsvDI9Jw1OveJmxGZUUaKxtrpOS47QWKfU=
 github.com/google/go-tpm-tools v0.4.4 h1:oiQfAIkc6xTy9Fl5NKTeTJkBTlXdHsxAofmQyxBKY98=
@@ -1106,8 +1106,8 @@ go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.33.0 h1:Vh5HayB/0HHfOQA7Ctx
 go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.33.0/go.mod h1:cpgtDBaqD/6ok/UG0jT15/uKjAY8mRA53diogHBg3UI=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.27.0 h1:qFffATk0X+HD+f1Z8lswGiOQYKHRlzfmdJm0wEaVrFA=
 go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.27.0/go.mod h1:MOiCmryaYtc+V0Ei+Tx9o5S1ZjA7kzLucuVuyzBZloQ=
-go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.33.0 h1:wpMfgF8E1rkrT1Z6meFh1NDtownE9Ii3n3X2GJYjsaU=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.27.0 h1:QY7/0NeRPKlzusf40ZE4t1VlMKbqSNT7cJRYzWuja0s=
-go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.33.0/go.mod h1:wAy0T/dUbs468uOlkT31xjvqQgEVXv58BRFWEgn5v/0=
+go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.27.0/go.mod h1:HVkSiDhTM9BoUJU8qE6j2eSWLLXvi1USXjyd2BXT8PY=
 go.opentelemetry.io/otel/metric v1.33.0 h1:r+JOocAyeRVXD8lZpjdQjzMadVZp2M4WmQ+5WtEnklQ=
 go.opentelemetry.io/otel/metric v1.33.0/go.mod h1:L9+Fyctbp6HFTddIxClbQkjtubW6O9QS3Ann/M82u6M=
 go.opentelemetry.io/otel/sdk v1.33.0 h1:iax7M131HuAm9QkZotNHEfstof92xM+N8sr3uHXc2IM=
@@ -1222,8 +1222,8 @@ golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
 golang.org/x/net v0.34.0 h1:Mb7Mrk043xzHgnRM88suvJFwzVrRfHEHJEl5/71CKw0=
 golang.org/x/net v0.34.0/go.mod h1:di0qlW3YNM5oh6GqDGQr92MyTozJPmybPK4Ev/Gm31k=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/oauth2 v0.25.0 h1:CY4y7XT9v0cRI9oupztF8AgiIu99L/ksR/Xp/6jrZ70=
+golang.org/x/oauth2 v0.24.0 h1:KTBBxWqUa0ykRPLtV69rRto9TLXcqYkeswu48x/gvNE=
-golang.org/x/oauth2 v0.25.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
+golang.org/x/oauth2 v0.24.0/go.mod h1:XYTD2NtWslqkgxebSiOHnXEap4TF09sJSc7H1sXbhtI=
 golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=

internal/machine/api/pb/cluster.pb.go

@@ -124,7 +124,7 @@ func (x DNSRecord_RecordType) Number() protoreflect.EnumNumber {
 
 // Deprecated: Use DNSRecord_RecordType.Descriptor instead.
 func (DNSRecord_RecordType) EnumDescriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{6, 0}
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{7, 0}
 }
 
 type AddMachineRequest struct {
@@ -378,6 +378,53 @@ func (x *Domain) GetName() string {
 	return ""
 }
 
+type ReserveDomainRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	ApiEndpoint string `protobuf:"bytes,1,opt,name=api_endpoint,json=apiEndpoint,proto3" json:"api_endpoint,omitempty"`
+}
+
+func (x *ReserveDomainRequest) Reset() {
+	*x = ReserveDomainRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ReserveDomainRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ReserveDomainRequest) ProtoMessage() {}
+
+func (x *ReserveDomainRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ReserveDomainRequest.ProtoReflect.Descriptor instead.
+func (*ReserveDomainRequest) Descriptor() ([]byte, []int) {
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *ReserveDomainRequest) GetApiEndpoint() string {
+	if x != nil {
+		return x.ApiEndpoint
+	}
+	return ""
+}
+
 type UpdateDomainRecordsRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -389,7 +436,7 @@ type UpdateDomainRecordsRequest struct {
 func (x *UpdateDomainRecordsRequest) Reset() {
 	*x = UpdateDomainRecordsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[5]
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -402,7 +449,7 @@ func (x *UpdateDomainRecordsRequest) String() string {
 func (*UpdateDomainRecordsRequest) ProtoMessage() {}
 
 func (x *UpdateDomainRecordsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[5]
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -415,7 +462,7 @@ func (x *UpdateDomainRecordsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpdateDomainRecordsRequest.ProtoReflect.Descriptor instead.
 func (*UpdateDomainRecordsRequest) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{5}
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *UpdateDomainRecordsRequest) GetRecords() []*DNSRecord {
@@ -438,7 +485,7 @@ type DNSRecord struct {
 func (x *DNSRecord) Reset() {
 	*x = DNSRecord{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[6]
+		mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -451,7 +498,7 @@ func (x *DNSRecord) String() string {
 func (*DNSRecord) ProtoMessage() {}
 
 func (x *DNSRecord) ProtoReflect() protoreflect.Message {
-	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[6]
+	mi := &file_internal_machine_api_pb_cluster_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -464,7 +511,7 @@ func (x *DNSRecord) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DNSRecord.ProtoReflect.Descriptor instead.
 func (*DNSRecord) Descriptor() ([]byte, []int) {
-	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{6}
+	return file_internal_machine_api_pb_cluster_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *DNSRecord) GetName() string {
@@ -525,42 +572,53 @@ var file_internal_machine_api_pb_cluster_proto_rawDesc = []byte{
 	0x2e, 0x4d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x4d, 0x65, 0x6d, 0x62, 0x65, 0x72, 0x52, 0x08,
 	0x6d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x73, 0x22, 0x1c, 0x0a, 0x06, 0x44, 0x6f, 0x6d, 0x61,
 	0x69, 0x6e, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09,
-	0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x22, 0x46, 0x0a, 0x1a, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65,
+	0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x22, 0x39, 0x0a, 0x14, 0x52, 0x65, 0x73, 0x65, 0x72, 0x76,
-	0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x73, 0x52, 0x65, 0x71,
+	0x65, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12, 0x21,
-	0x75, 0x65, 0x73, 0x74, 0x12, 0x28, 0x0a, 0x07, 0x72, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x73, 0x18,
+	0x0a, 0x0c, 0x61, 0x70, 0x69, 0x5f, 0x65, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e, 0x74, 0x18, 0x01,
-	0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x0e, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x44, 0x4e, 0x53, 0x52,
+	0x20, 0x01, 0x28, 0x09, 0x52, 0x0b, 0x61, 0x70, 0x69, 0x45, 0x6e, 0x64, 0x70, 0x6f, 0x69, 0x6e,
-	0x65, 0x63, 0x6f, 0x72, 0x64, 0x52, 0x07, 0x72, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x73, 0x22, 0x96,
+	0x74, 0x22, 0x46, 0x0a, 0x1a, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65, 0x44, 0x6f, 0x6d, 0x61, 0x69,
-	0x01, 0x0a, 0x09, 0x44, 0x4e, 0x53, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x12, 0x12, 0x0a, 0x04,
+	0x6e, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12,
-	0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65,
+	0x28, 0x0a, 0x07, 0x72, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x73, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b,
-	0x12, 0x2d, 0x0a, 0x04, 0x74, 0x79, 0x70, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x19,
+	0x32, 0x0e, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x44, 0x4e, 0x53, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64,
-	0x2e, 0x61, 0x70, 0x69, 0x2e, 0x44, 0x4e, 0x53, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x2e, 0x52,
+	0x52, 0x07, 0x72, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x73, 0x22, 0x96, 0x01, 0x0a, 0x09, 0x44, 0x4e,
-	0x65, 0x63, 0x6f, 0x72, 0x64, 0x54, 0x79, 0x70, 0x65, 0x52, 0x04, 0x74, 0x79, 0x70, 0x65, 0x12,
+	0x53, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x12, 0x12, 0x0a, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x18,
-	0x16, 0x0a, 0x06, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x73, 0x18, 0x03, 0x20, 0x03, 0x28, 0x09, 0x52,
+	0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65, 0x12, 0x2d, 0x0a, 0x04, 0x74,
-	0x06, 0x76, 0x61, 0x6c, 0x75, 0x65, 0x73, 0x22, 0x2e, 0x0a, 0x0a, 0x52, 0x65, 0x63, 0x6f, 0x72,
+	0x79, 0x70, 0x65, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x19, 0x2e, 0x61, 0x70, 0x69, 0x2e,
-	0x64, 0x54, 0x79, 0x70, 0x65, 0x12, 0x0f, 0x0a, 0x0b, 0x55, 0x4e, 0x53, 0x50, 0x45, 0x43, 0x49,
+	0x44, 0x4e, 0x53, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x2e, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64,
-	0x46, 0x49, 0x45, 0x44, 0x10, 0x00, 0x12, 0x05, 0x0a, 0x01, 0x41, 0x10, 0x01, 0x12, 0x08, 0x0a,
+	0x54, 0x79, 0x70, 0x65, 0x52, 0x04, 0x74, 0x79, 0x70, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x76, 0x61,
-	0x04, 0x41, 0x41, 0x41, 0x41, 0x10, 0x02, 0x32, 0x8d, 0x02, 0x0a, 0x07, 0x43, 0x6c, 0x75, 0x73,
+	0x6c, 0x75, 0x65, 0x73, 0x18, 0x03, 0x20, 0x03, 0x28, 0x09, 0x52, 0x06, 0x76, 0x61, 0x6c, 0x75,
-	0x74, 0x65, 0x72, 0x12, 0x3d, 0x0a, 0x0a, 0x41, 0x64, 0x64, 0x4d, 0x61, 0x63, 0x68, 0x69, 0x6e,
+	0x65, 0x73, 0x22, 0x2e, 0x0a, 0x0a, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x54, 0x79, 0x70, 0x65,
-	0x65, 0x12, 0x16, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x41, 0x64, 0x64, 0x4d, 0x61, 0x63, 0x68, 0x69,
+	0x12, 0x0f, 0x0a, 0x0b, 0x55, 0x4e, 0x53, 0x50, 0x45, 0x43, 0x49, 0x46, 0x49, 0x45, 0x44, 0x10,
-	0x6e, 0x65, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x17, 0x2e, 0x61, 0x70, 0x69, 0x2e,
+	0x00, 0x12, 0x05, 0x0a, 0x01, 0x41, 0x10, 0x01, 0x12, 0x08, 0x0a, 0x04, 0x41, 0x41, 0x41, 0x41,
-	0x41, 0x64, 0x64, 0x4d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e,
+	0x10, 0x02, 0x32, 0xfc, 0x02, 0x0a, 0x07, 0x43, 0x6c, 0x75, 0x73, 0x74, 0x65, 0x72, 0x12, 0x3d,
-	0x73, 0x65, 0x12, 0x41, 0x0a, 0x0c, 0x4c, 0x69, 0x73, 0x74, 0x4d, 0x61, 0x63, 0x68, 0x69, 0x6e,
+	0x0a, 0x0a, 0x41, 0x64, 0x64, 0x4d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x12, 0x16, 0x2e, 0x61,
-	0x65, 0x73, 0x12, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x70, 0x69, 0x2e, 0x41, 0x64, 0x64, 0x4d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x52, 0x65, 0x71,
-	0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x1a, 0x19, 0x2e, 0x61, 0x70, 0x69,
+	0x75, 0x65, 0x73, 0x74, 0x1a, 0x17, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x41, 0x64, 0x64, 0x4d, 0x61,
-	0x2e, 0x4c, 0x69, 0x73, 0x74, 0x4d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x73, 0x52, 0x65, 0x73,
+	0x63, 0x68, 0x69, 0x6e, 0x65, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x41, 0x0a,
-	0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x30, 0x0a, 0x09, 0x47, 0x65, 0x74, 0x44, 0x6f, 0x6d, 0x61,
+	0x0c, 0x4c, 0x69, 0x73, 0x74, 0x4d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x73, 0x12, 0x16, 0x2e,
-	0x69, 0x6e, 0x12, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e,
-	0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x1a, 0x0b, 0x2e, 0x61, 0x70, 0x69,
+	0x45, 0x6d, 0x70, 0x74, 0x79, 0x1a, 0x19, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x4c, 0x69, 0x73, 0x74,
-	0x2e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x12, 0x4e, 0x0a, 0x13, 0x55, 0x70, 0x64, 0x61, 0x74,
+	0x4d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x73, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65,
-	0x65, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x73, 0x12, 0x1f,
+	0x12, 0x37, 0x0a, 0x0d, 0x52, 0x65, 0x73, 0x65, 0x72, 0x76, 0x65, 0x44, 0x6f, 0x6d, 0x61, 0x69,
-	0x2e, 0x61, 0x70, 0x69, 0x2e, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65, 0x44, 0x6f, 0x6d, 0x61, 0x69,
+	0x6e, 0x12, 0x19, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x52, 0x65, 0x73, 0x65, 0x72, 0x76, 0x65, 0x44,
-	0x6e, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a,
+	0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x0b, 0x2e, 0x61,
-	0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75,
+	0x70, 0x69, 0x2e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x12, 0x30, 0x0a, 0x09, 0x47, 0x65, 0x74,
-	0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x42, 0x37, 0x5a, 0x35, 0x67, 0x69, 0x74, 0x68, 0x75,
+	0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x12, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e,
-	0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x70, 0x73, 0x76, 0x69, 0x64, 0x65, 0x72, 0x73, 0x6b, 0x69,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74, 0x79, 0x1a, 0x0b,
-	0x2f, 0x75, 0x6e, 0x63, 0x6c, 0x6f, 0x75, 0x64, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61,
+	0x2e, 0x61, 0x70, 0x69, 0x2e, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x12, 0x34, 0x0a, 0x0d, 0x52,
-	0x6c, 0x2f, 0x6d, 0x61, 0x63, 0x68, 0x69, 0x6e, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x70, 0x62,
+	0x65, 0x6c, 0x65, 0x61, 0x73, 0x65, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x12, 0x16, 0x2e, 0x67,
-	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45,
+	0x6d, 0x70, 0x74, 0x79, 0x1a, 0x0b, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x44, 0x6f, 0x6d, 0x61, 0x69,
+	0x6e, 0x12, 0x4e, 0x0a, 0x13, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65, 0x44, 0x6f, 0x6d, 0x61, 0x69,
+	0x6e, 0x52, 0x65, 0x63, 0x6f, 0x72, 0x64, 0x73, 0x12, 0x1f, 0x2e, 0x61, 0x70, 0x69, 0x2e, 0x55,
+	0x70, 0x64, 0x61, 0x74, 0x65, 0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x52, 0x65, 0x63, 0x6f, 0x72,
+	0x64, 0x73, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x16, 0x2e, 0x67, 0x6f, 0x6f, 0x67,
+	0x6c, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6d, 0x70, 0x74,
+	0x79, 0x42, 0x37, 0x5a, 0x35, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f,
+	0x70, 0x73, 0x76, 0x69, 0x64, 0x65, 0x72, 0x73, 0x6b, 0x69, 0x2f, 0x75, 0x6e, 0x63, 0x6c, 0x6f,
+	0x75, 0x64, 0x2f, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, 0x61, 0x6c, 0x2f, 0x6d, 0x61, 0x63, 0x68,
+	0x69, 0x6e, 0x65, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x33,
 }
 
 var (
@@ -576,7 +634,7 @@ func file_internal_machine_api_pb_cluster_proto_rawDescGZIP() []byte {
 }
 
 var file_internal_machine_api_pb_cluster_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
-var file_internal_machine_api_pb_cluster_proto_msgTypes = make([]protoimpl.MessageInfo, 7)
+var file_internal_machine_api_pb_cluster_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
 var file_internal_machine_api_pb_cluster_proto_goTypes = []any{
 	(MachineMember_MembershipState)(0), // 0: api.MachineMember.MembershipState
 	(DNSRecord_RecordType)(0),          // 1: api.DNSRecord.RecordType
@@ -585,30 +643,35 @@ var file_internal_machine_api_pb_cluster_proto_goTypes = []any{
 	(*MachineMember)(nil),              // 4: api.MachineMember
 	(*ListMachinesResponse)(nil),       // 5: api.ListMachinesResponse
 	(*Domain)(nil),                     // 6: api.Domain
-	(*UpdateDomainRecordsRequest)(nil), // 7: api.UpdateDomainRecordsRequest
+	(*ReserveDomainRequest)(nil),       // 7: api.ReserveDomainRequest
-	(*DNSRecord)(nil),                  // 8: api.DNSRecord
+	(*UpdateDomainRecordsRequest)(nil), // 8: api.UpdateDomainRecordsRequest
-	(*NetworkConfig)(nil),              // 9: api.NetworkConfig
+	(*DNSRecord)(nil),                  // 9: api.DNSRecord
-	(*MachineInfo)(nil),                // 10: api.MachineInfo
+	(*NetworkConfig)(nil),              // 10: api.NetworkConfig
-	(*emptypb.Empty)(nil),              // 11: google.protobuf.Empty
+	(*MachineInfo)(nil),                // 11: api.MachineInfo
+	(*emptypb.Empty)(nil),              // 12: google.protobuf.Empty
 }
 var file_internal_machine_api_pb_cluster_proto_depIdxs = []int32{
-	9,  // 0: api.AddMachineRequest.network:type_name -> api.NetworkConfig
+	10, // 0: api.AddMachineRequest.network:type_name -> api.NetworkConfig
-	10, // 1: api.AddMachineResponse.machine:type_name -> api.MachineInfo
+	11, // 1: api.AddMachineResponse.machine:type_name -> api.MachineInfo
-	10, // 2: api.MachineMember.machine:type_name -> api.MachineInfo
+	11, // 2: api.MachineMember.machine:type_name -> api.MachineInfo
 	0,  // 3: api.MachineMember.state:type_name -> api.MachineMember.MembershipState
 	4,  // 4: api.ListMachinesResponse.machines:type_name -> api.MachineMember
-	8,  // 5: api.UpdateDomainRecordsRequest.records:type_name -> api.DNSRecord
+	9,  // 5: api.UpdateDomainRecordsRequest.records:type_name -> api.DNSRecord
 	1,  // 6: api.DNSRecord.type:type_name -> api.DNSRecord.RecordType
 	2,  // 7: api.Cluster.AddMachine:input_type -> api.AddMachineRequest
-	11, // 8: api.Cluster.ListMachines:input_type -> google.protobuf.Empty
+	12, // 8: api.Cluster.ListMachines:input_type -> google.protobuf.Empty
-	11, // 9: api.Cluster.GetDomain:input_type -> google.protobuf.Empty
+	7,  // 9: api.Cluster.ReserveDomain:input_type -> api.ReserveDomainRequest
-	7,  // 10: api.Cluster.UpdateDomainRecords:input_type -> api.UpdateDomainRecordsRequest
+	12, // 10: api.Cluster.GetDomain:input_type -> google.protobuf.Empty
-	3,  // 11: api.Cluster.AddMachine:output_type -> api.AddMachineResponse
+	12, // 11: api.Cluster.ReleaseDomain:input_type -> google.protobuf.Empty
-	5,  // 12: api.Cluster.ListMachines:output_type -> api.ListMachinesResponse
+	8,  // 12: api.Cluster.UpdateDomainRecords:input_type -> api.UpdateDomainRecordsRequest
-	6,  // 13: api.Cluster.GetDomain:output_type -> api.Domain
+	3,  // 13: api.Cluster.AddMachine:output_type -> api.AddMachineResponse
-	11, // 14: api.Cluster.UpdateDomainRecords:output_type -> google.protobuf.Empty
+	5,  // 14: api.Cluster.ListMachines:output_type -> api.ListMachinesResponse
-	11, // [11:15] is the sub-list for method output_type
+	6,  // 15: api.Cluster.ReserveDomain:output_type -> api.Domain
-	7,  // [7:11] is the sub-list for method input_type
+	6,  // 16: api.Cluster.GetDomain:output_type -> api.Domain
+	6,  // 17: api.Cluster.ReleaseDomain:output_type -> api.Domain
+	12, // 18: api.Cluster.UpdateDomainRecords:output_type -> google.protobuf.Empty
+	13, // [13:19] is the sub-list for method output_type
+	7,  // [7:13] is the sub-list for method input_type
 	7,  // [7:7] is the sub-list for extension type_name
 	7,  // [7:7] is the sub-list for extension extendee
 	0,  // [0:7] is the sub-list for field type_name
@@ -682,7 +745,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_cluster_proto_msgTypes[5].Exporter = func(v any, i int) any {
-			switch v := v.(*UpdateDomainRecordsRequest); i {
+			switch v := v.(*ReserveDomainRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -694,6 +757,18 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 			}
 		}
 		file_internal_machine_api_pb_cluster_proto_msgTypes[6].Exporter = func(v any, i int) any {
+			switch v := v.(*UpdateDomainRecordsRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_internal_machine_api_pb_cluster_proto_msgTypes[7].Exporter = func(v any, i int) any {
 			switch v := v.(*DNSRecord); i {
 			case 0:
 				return &v.state
@@ -712,7 +787,7 @@ func file_internal_machine_api_pb_cluster_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_internal_machine_api_pb_cluster_proto_rawDesc,
 			NumEnums:      2,
-			NumMessages:   7,
+			NumMessages:   8,
 			NumExtensions: 0,
 			NumServices:   1,
 		},

internal/machine/api/pb/cluster.proto

@@ -10,7 +10,10 @@ import "internal/machine/api/pb/machine.proto";
 service Cluster {
   rpc AddMachine(AddMachineRequest) returns (AddMachineResponse);
   rpc ListMachines(google.protobuf.Empty) returns (ListMachinesResponse);
+
+  rpc ReserveDomain(ReserveDomainRequest) returns (Domain);
   rpc GetDomain(google.protobuf.Empty) returns (Domain);
+  rpc ReleaseDomain(google.protobuf.Empty) returns (Domain);
   rpc UpdateDomainRecords(UpdateDomainRecordsRequest) returns (google.protobuf.Empty);
 }
 
@@ -48,6 +51,10 @@ message Domain {
   string name = 1;
 }
 
+message ReserveDomainRequest {
+  string api_endpoint = 1;
+}
+
 message UpdateDomainRecordsRequest {
   repeated DNSRecord records = 1;
 }

internal/machine/api/pb/cluster_grpc.pb.go

@@ -22,7 +22,9 @@ const _ = grpc.SupportPackageIsVersion9
 const (
 	Cluster_AddMachine_FullMethodName          = "/api.Cluster/AddMachine"
 	Cluster_ListMachines_FullMethodName        = "/api.Cluster/ListMachines"
+	Cluster_ReserveDomain_FullMethodName       = "/api.Cluster/ReserveDomain"
 	Cluster_GetDomain_FullMethodName           = "/api.Cluster/GetDomain"
+	Cluster_ReleaseDomain_FullMethodName       = "/api.Cluster/ReleaseDomain"
 	Cluster_UpdateDomainRecords_FullMethodName = "/api.Cluster/UpdateDomainRecords"
 )
 
@@ -32,7 +34,9 @@ const (
 type ClusterClient interface {
 	AddMachine(ctx context.Context, in *AddMachineRequest, opts ...grpc.CallOption) (*AddMachineResponse, error)
 	ListMachines(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*ListMachinesResponse, error)
+	ReserveDomain(ctx context.Context, in *ReserveDomainRequest, opts ...grpc.CallOption) (*Domain, error)
 	GetDomain(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*Domain, error)
+	ReleaseDomain(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*Domain, error)
 	UpdateDomainRecords(ctx context.Context, in *UpdateDomainRecordsRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 }
 
@@ -64,6 +68,16 @@ func (c *clusterClient) ListMachines(ctx context.Context, in *emptypb.Empty, opt
 	return out, nil
 }
 
+func (c *clusterClient) ReserveDomain(ctx context.Context, in *ReserveDomainRequest, opts ...grpc.CallOption) (*Domain, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(Domain)
+	err := c.cc.Invoke(ctx, Cluster_ReserveDomain_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *clusterClient) GetDomain(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*Domain, error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(Domain)
@@ -74,6 +88,16 @@ func (c *clusterClient) GetDomain(ctx context.Context, in *emptypb.Empty, opts .
 	return out, nil
 }
 
+func (c *clusterClient) ReleaseDomain(ctx context.Context, in *emptypb.Empty, opts ...grpc.CallOption) (*Domain, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(Domain)
+	err := c.cc.Invoke(ctx, Cluster_ReleaseDomain_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *clusterClient) UpdateDomainRecords(ctx context.Context, in *UpdateDomainRecordsRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
 	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
 	out := new(emptypb.Empty)
@@ -90,7 +114,9 @@ func (c *clusterClient) UpdateDomainRecords(ctx context.Context, in *UpdateDomai
 type ClusterServer interface {
 	AddMachine(context.Context, *AddMachineRequest) (*AddMachineResponse, error)
 	ListMachines(context.Context, *emptypb.Empty) (*ListMachinesResponse, error)
+	ReserveDomain(context.Context, *ReserveDomainRequest) (*Domain, error)
 	GetDomain(context.Context, *emptypb.Empty) (*Domain, error)
+	ReleaseDomain(context.Context, *emptypb.Empty) (*Domain, error)
 	UpdateDomainRecords(context.Context, *UpdateDomainRecordsRequest) (*emptypb.Empty, error)
 	mustEmbedUnimplementedClusterServer()
 }
@@ -108,9 +134,15 @@ func (UnimplementedClusterServer) AddMachine(context.Context, *AddMachineRequest
 func (UnimplementedClusterServer) ListMachines(context.Context, *emptypb.Empty) (*ListMachinesResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ListMachines not implemented")
 }
+func (UnimplementedClusterServer) ReserveDomain(context.Context, *ReserveDomainRequest) (*Domain, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ReserveDomain not implemented")
+}
 func (UnimplementedClusterServer) GetDomain(context.Context, *emptypb.Empty) (*Domain, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method GetDomain not implemented")
 }
+func (UnimplementedClusterServer) ReleaseDomain(context.Context, *emptypb.Empty) (*Domain, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ReleaseDomain not implemented")
+}
 func (UnimplementedClusterServer) UpdateDomainRecords(context.Context, *UpdateDomainRecordsRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method UpdateDomainRecords not implemented")
 }
@@ -171,6 +203,24 @@ func _Cluster_ListMachines_Handler(srv interface{}, ctx context.Context, dec fun
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Cluster_ReserveDomain_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ReserveDomainRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ClusterServer).ReserveDomain(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Cluster_ReserveDomain_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ClusterServer).ReserveDomain(ctx, req.(*ReserveDomainRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Cluster_GetDomain_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(emptypb.Empty)
 	if err := dec(in); err != nil {
@@ -189,6 +239,24 @@ func _Cluster_GetDomain_Handler(srv interface{}, ctx context.Context, dec func(i
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Cluster_ReleaseDomain_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(emptypb.Empty)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(ClusterServer).ReleaseDomain(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Cluster_ReleaseDomain_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(ClusterServer).ReleaseDomain(ctx, req.(*emptypb.Empty))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _Cluster_UpdateDomainRecords_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(UpdateDomainRecordsRequest)
 	if err := dec(in); err != nil {
@@ -222,10 +290,18 @@ var Cluster_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "ListMachines",
 			Handler:    _Cluster_ListMachines_Handler,
 		},
+		{
+			MethodName: "ReserveDomain",
+			Handler:    _Cluster_ReserveDomain_Handler,
+		},
 		{
 			MethodName: "GetDomain",
 			Handler:    _Cluster_GetDomain_Handler,
 		},
+		{
+			MethodName: "ReleaseDomain",
+			Handler:    _Cluster_ReleaseDomain_Handler,
+		},
 		{
 			MethodName: "UpdateDomainRecords",
 			Handler:    _Cluster_UpdateDomainRecords_Handler,

internal/machine/cluster/dns.go

@@ -0,0 +1,109 @@
+package cluster
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/emptypb"
+	"uncloud/internal/dns"
+	"uncloud/internal/machine/api/pb"
+	"uncloud/internal/machine/store"
+)
+
+// uncloudDNSKey is the key used to store the details of the reserved domain in the store.
+const uncloudDNSKey = "uncloud_dns"
+
+type uncloudDNSDomain struct {
+	Name string
+	// TODO: encrypt the token in the store.
+	Token string
+}
+
+func (c *Cluster) ReserveDomain(ctx context.Context, req *pb.ReserveDomainRequest) (*pb.Domain, error) {
+	if err := c.checkInitialised(ctx); err != nil {
+		return nil, err
+	}
+
+	if req.ApiEndpoint == "" {
+		return nil, status.Error(codes.InvalidArgument, "API endpoint not set")
+	}
+
+	if _, err := c.storedDomain(ctx); err == nil {
+		return nil, status.Errorf(codes.AlreadyExists, "domain already reserved")
+	} else {
+		if s := status.Convert(err); s.Code() != codes.NotFound {
+			return nil, err
+		}
+	}
+
+	dnsClient := dns.NewClient()
+	name, token, err := dnsClient.ReserveDomain(req.ApiEndpoint)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, err.Error())
+	}
+
+	domain := uncloudDNSDomain{
+		Name:  name,
+		Token: token,
+	}
+	domainJSON, err := json.Marshal(domain)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "marshal reserved domain for store: %v", err)
+	}
+	if err = c.store.Put(ctx, uncloudDNSKey, domainJSON); err != nil {
+		return nil, status.Errorf(codes.Internal, "store reserved domain: %v", err)
+	}
+
+	return &pb.Domain{Name: name}, nil
+}
+
+func (c *Cluster) GetDomain(ctx context.Context, _ *emptypb.Empty) (*pb.Domain, error) {
+	if err := c.checkInitialised(ctx); err != nil {
+		return nil, err
+	}
+
+	domain, err := c.storedDomain(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	return &pb.Domain{Name: domain.Name}, nil
+}
+
+func (c *Cluster) storedDomain(ctx context.Context) (uncloudDNSDomain, error) {
+	var domain uncloudDNSDomain
+	var domainJSON []byte
+
+	if err := c.store.Get(ctx, uncloudDNSKey, &domainJSON); err != nil {
+		if errors.Is(err, store.ErrKeyNotFound) {
+			return domain, status.Errorf(codes.NotFound, "domain not found")
+		}
+		return domain, status.Errorf(codes.Internal, "get domain from store: %v", err)
+	}
+
+	if err := json.Unmarshal(domainJSON, &domain); err != nil {
+		return domain, status.Errorf(codes.Internal, "unmarshal domain: %v", err)
+	}
+
+	return domain, nil
+}
+
+func (c *Cluster) ReleaseDomain(ctx context.Context, _ *emptypb.Empty) (*pb.Domain, error) {
+	if err := c.checkInitialised(ctx); err != nil {
+		return nil, err
+	}
+
+	domain, err := c.storedDomain(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	if err = c.store.Delete(ctx, uncloudDNSKey); err != nil {
+		return nil, status.Errorf(codes.Internal, "delete domain from store: %v", err)
+	}
+	// TODO: implement and call Uncloud DNS endpoint to release/delete the domain.
+
+	return &pb.Domain{Name: domain.Name}, nil
+}

internal/machine/machine.go

@@ -703,7 +703,7 @@ func (m *Machine) Inspect(_ context.Context, _ *emptypb.Empty) (*pb.MachineInfo,
 	}, nil
 }
 
-// InspectService returns detailed information about a service and its containers.
+// InspectService returns detailed information about a service and its containers stored in the cluster store.
 func (m *Machine) InspectService(
 	ctx context.Context, req *pb.InspectServiceRequest,
 ) (*pb.InspectServiceResponse, error) {

internal/machine/store/store.go

@@ -49,6 +49,11 @@ func (s *Store) Put(ctx context.Context, key string, value any) error {
 	return err
 }
 
+func (s *Store) Delete(ctx context.Context, key string) error {
+	_, err := s.corro.ExecContext(ctx, "DELETE FROM cluster WHERE key = ?", key)
+	return err
+}
+
 func (s *Store) CreateMachine(ctx context.Context, m *pb.MachineInfo) error {
 	mJSON, err := protojson.Marshal(m)
 	if err != nil {