fix: use default network interface

go.mod

@@ -13,7 +13,7 @@ require (
 	github.com/sirupsen/logrus v1.6.0
 	github.com/spf13/cobra v1.7.0
 	github.com/ucloud/go-lockfile v0.1.0
-	github.com/ucloud/ucloud-sdk-go v0.21.46
+	github.com/ucloud/ucloud-sdk-go v0.22.30
 	github.com/vishvananda/netlink v1.2.1-beta.2
 	github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f
 	google.golang.org/grpc v1.56.3

go.sum

@@ -162,6 +162,8 @@ github.com/ucloud/go-lockfile v0.1.0 h1:Mzb1/OZc8Gween/p1cA4t6qBTiE9JnZntZpRTdII
 github.com/ucloud/go-lockfile v0.1.0/go.mod h1:OCM7zfa82qicE2nW5pVtSDEMmPvjYvProNQ/f2YHEkw=
 github.com/ucloud/ucloud-sdk-go v0.21.46 h1:LwrTxERZjQJPjVILoIfjy8PTgYkckah5ms2eq4ECgT0=
 github.com/ucloud/ucloud-sdk-go v0.21.46/go.mod h1:dyLmFHmUfgb4RZKYQP9IArlvQ2pxzFthfhwxRzOEPIw=
+github.com/ucloud/ucloud-sdk-go v0.22.30 h1:CZQWo+LLLYMVgf/Mq9JoFVNyIM7jLFpwvnctsUwXV3k=
+github.com/ucloud/ucloud-sdk-go v0.22.30/go.mod h1:dyLmFHmUfgb4RZKYQP9IArlvQ2pxzFthfhwxRzOEPIw=
 github.com/vishvananda/netlink v1.1.1-0.20201029203352-d40f9887b852/go.mod h1:twkDnbuQxJYemMlGd4JFIcuhgX83tXhKS2B/PRMpOho=
 github.com/vishvananda/netlink v1.2.1-beta.2 h1:Llsql0lnQEbHj0I1OuKyp8otXp0r3q0mPkuhwHfStVs=
 github.com/vishvananda/netlink v1.2.1-beta.2/go.mod h1:twkDnbuQxJYemMlGd4JFIcuhgX83tXhKS2B/PRMpOho=

pkg/uapi/client.go

@@ -151,11 +151,16 @@ func NewClient() (*ApiClient, error) {
 		zoneId:     meta.AvailabilityZone,
 		cfg:        &cfg,
 	}
-	// Get vpcId and subnetId
-	if len(meta.UHost.NetworkInterfaces) > 0 {
-		uApi.vpcId = meta.UHost.NetworkInterfaces[0].VpcId
-		uApi.subnetId = meta.UHost.NetworkInterfaces[0].SubnetId
-	} else {
+
+	for _, iface := range meta.UHost.NetworkInterfaces {
+		if iface.Default {
+			uApi.vpcId = iface.VpcId
+			uApi.subnetId = iface.SubnetId
+			break
+		}
+	}
+
+	if uApi.vpcId == "" || uApi.subnetId == "" {
 		uApi.vpcId = os.Getenv("UCLOUD_VPC_ID")
 		uApi.subnetId = os.Getenv("UCLOUD_SUBNET_ID")
 	}