add default env variables

weed/remote_storage/s3/tencent.go

@@ -8,6 +8,8 @@ import (
 	"github.com/aws/aws-sdk-go/service/s3"
 	"github.com/chrislusf/seaweedfs/weed/pb/filer_pb"
 	"github.com/chrislusf/seaweedfs/weed/remote_storage"
+	"github.com/chrislusf/seaweedfs/weed/util"
+	"os"
 )
 
 func init() {
@@ -20,12 +22,14 @@ func (s TencentRemoteStorageMaker) Make(conf *filer_pb.RemoteConf) (remote_stora
 	client := &s3RemoteStorageClient{
 		conf: conf,
 	}
+	accessKey := util.Nvl(conf.TencentSecretId, os.Getenv("COS_SECRETID"))
+	secretKey := util.Nvl(conf.TencentSecretKey, os.Getenv("COS_SECRETKEY"))
 
 	config := &aws.Config{
 		Endpoint:         aws.String(conf.TencentEndpoint),
 		S3ForcePathStyle: aws.Bool(true),
 	}
-	config.Credentials = credentials.NewStaticCredentials(conf.TencentSecretId, conf.TencentSecretKey, "")
+	config.Credentials = credentials.NewStaticCredentials(accessKey, secretKey, "")
 
 	sess, err := session.NewSession(config)
 	if err != nil {