diff --git a/components/cluster/command/import.go b/components/cluster/command/import.go
index c26c2fb220..4063fd6cb4 100644
--- a/components/cluster/command/import.go
+++ b/components/cluster/command/import.go
@@ -116,10 +116,10 @@ func newImportCmd() *cobra.Command {
 			srcKeyPathPub := srcKeyPathPriv + ".pub"
 			dstKeyPathPriv := spec.ClusterPath(clsName, "ssh", "id_rsa")
 			dstKeyPathPub := dstKeyPathPriv + ".pub"
-			if err = tiuputils.CopyFile(srcKeyPathPriv, dstKeyPathPriv); err != nil {
+			if err = tiuputils.Copy(srcKeyPathPriv, dstKeyPathPriv); err != nil {
 				return err
 			}
-			if err = tiuputils.CopyFile(srcKeyPathPub, dstKeyPathPub); err != nil {
+			if err = tiuputils.Copy(srcKeyPathPub, dstKeyPathPub); err != nil {
 				return err
 			}
 
diff --git a/components/err/error.go b/components/err/error.go
index 24b14c3a65..38963cd317 100644
--- a/components/err/error.go
+++ b/components/err/error.go
@@ -55,7 +55,7 @@ func main() {
 
 type errorSpec struct {
 	Code        string   `toml:"code" json:"code"`
-	Error     string   `toml:"error" json:"error"`
+	Error       string   `toml:"error" json:"error"`
 	Description string   `toml:"description" json:"description"`
 	Tags        []string `toml:"tags" json:"tags"`
 	Workaround  string   `toml:"workaround" json:"workaround"`
diff --git a/pkg/cluster/manager.go b/pkg/cluster/manager.go
index f5a090fbde..a682c2eb3e 100644
--- a/pkg/cluster/manager.go
+++ b/pkg/cluster/manager.go
@@ -1801,7 +1801,7 @@ func overwritePatch(specManager *spec.SpecManager, clusterName, comp, packagePat
 
 	tg := specManager.Path(clusterName, spec.PatchDirName, comp+"-"+checksum[:7]+".tar.gz")
 	if !utils.IsExist(tg) {
-		if err := utils.CopyFile(packagePath, tg); err != nil {
+		if err := utils.Copy(packagePath, tg); err != nil {
 			return err
 		}
 	}
diff --git a/pkg/localdata/profile.go b/pkg/localdata/profile.go
index 5afdaa6ede..2c1b1084e4 100644
--- a/pkg/localdata/profile.go
+++ b/pkg/localdata/profile.go
@@ -386,7 +386,7 @@ func (p *Profile) ResetMirror(addr, root string) error {
 			fmt.Printf("WARN: adding root certificate via internet: %s\n", root)
 			fmt.Printf("You can revoke this by remove %s\n", localRoot)
 		}
-		_ = utils.CopyFile(p.Path("bin", "root.json"), localRoot)
+		_ = utils.Copy(p.Path("bin", "root.json"), localRoot)
 	}
 
 	if err := os.RemoveAll(p.Path(ManifestParentDir)); err != nil {
diff --git a/pkg/utils/ioutil.go b/pkg/utils/ioutil.go
index 3b8d2a3373..8a5327d78f 100644
--- a/pkg/utils/ioutil.go
+++ b/pkg/utils/ioutil.go
@@ -19,7 +19,6 @@ import (
 	"compress/gzip"
 	"crypto/sha1"
 	"encoding/hex"
-	"fmt"
 	"io"
 	"os"
 	"path"
@@ -149,7 +148,13 @@ func Copy(src, dst string) error {
 	if err != nil {
 		return err
 	}
-	return out.Close()
+
+	err = out.Close()
+	if err != nil {
+		return err
+	}
+
+	return os.Chmod(dst, fi.Mode())
 }
 
 // Move moves a file from src to dst, this is done by copying the file and then
@@ -173,29 +178,6 @@ func CreateDir(path string) error {
 	return nil
 }
 
-// CopyFile copies a file from src to dst
-func CopyFile(src, dst string) error {
-	in, err := os.Open(src)
-	if err != nil {
-		return err
-	}
-	defer in.Close()
-
-	if IsExist(dst) {
-		return fmt.Errorf("destination path %s already exist", dst)
-	}
-	out, err := os.Create(dst)
-	if err != nil {
-		return err
-	}
-	defer out.Close()
-
-	if _, err = io.Copy(out, in); err != nil {
-		return err
-	}
-	return nil
-}
-
 // Checksum returns the sha1 sum of target file
 func Checksum(file string) (string, error) {
 	tarball, err := os.OpenFile(file, os.O_RDONLY, 0)
diff --git a/pkg/utils/ioutil_test.go b/pkg/utils/ioutil_test.go
index 4cba2b121d..e3aeed6bd0 100644
--- a/pkg/utils/ioutil_test.go
+++ b/pkg/utils/ioutil_test.go
@@ -68,3 +68,21 @@ func (s *TestIOUtilSuite) TestUntar(c *C) {
 	c.Assert(err, IsNil)
 	c.Assert(IsExist(path.Join(currentDir(), "testdata", "parent", "child", "content")), IsTrue)
 }
+
+func (s *TestIOUtilSuite) TestCopy(c *C) {
+	c.Assert(Copy(path.Join(currentDir(), "testdata", "test.tar.gz"), "/tmp/not-exists/test.tar.gz"), NotNil)
+	c.Assert(Copy(path.Join(currentDir(), "testdata", "test.tar.gz"), "/tmp/test.tar.gz"), IsNil)
+	fi, err := os.Stat(path.Join(currentDir(), "testdata", "test.tar.gz"))
+	c.Assert(err, IsNil)
+	fii, err := os.Stat("/tmp/test.tar.gz")
+	c.Assert(err, IsNil)
+	c.Assert(fi.Mode(), Equals, fii.Mode())
+
+	c.Assert(os.Chmod("/tmp/test.tar.gz", 0777), IsNil)
+	c.Assert(Copy(path.Join(currentDir(), "testdata", "test.tar.gz"), "/tmp/test.tar.gz"), IsNil)
+	fi, err = os.Stat(path.Join(currentDir(), "testdata", "test.tar.gz"))
+	c.Assert(err, IsNil)
+	fii, err = os.Stat("/tmp/test.tar.gz")
+	c.Assert(err, IsNil)
+	c.Assert(fi.Mode(), Equals, fii.Mode())
+}