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Merged
phm07 merged 3 commits into from
Jan 23, 2026
+41 −25
Merged

feat(server): allow specifying user-data for rebuild #1319

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f8e32b2
feat(server): allow specifying user-data for rebuild
phm07 Jan 22, 2026
9adf99d
refactor
phm07 Jan 23, 2026
7b30e0e
fix lint
phm07 Jan 23, 2026
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9 changes: 5 additions & 4 deletions docs/reference/manual/hcloud_server_rebuild.md
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41 changes: 21 additions & 20 deletions internal/cmd/server/create.go
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Original file line number Diff line number Diff line change
Expand Up @@ -206,6 +206,23 @@ func detectContentType(data string) string {
}

func buildUserData(files []string) (string, error) {
if len(files) == 0 {
return "", nil
}

var (
data []byte
err error
)
if len(files) == 1 {
if file := files[0]; file == "-" {
data, err = io.ReadAll(os.Stdin)
} else {
data, err = os.ReadFile(file)
}
return string(data), err
}

var (
buf = new(bytes.Buffer)
mp = multipart.NewWriter(buf)
Expand All @@ -215,10 +232,6 @@ func buildUserData(files []string) (string, error) {
fmt.Fprint(buf, "Content-Type: multipart/mixed; boundary="+mp.Boundary()+"\r\n\r\n")

for _, file := range files {
var (
data []byte
err error
)
if file == "-" {
data, err = io.ReadAll(os.Stdin)
} else {
Expand Down Expand Up @@ -352,22 +365,10 @@ func createOptsFromFlags(
publicNetConfiguration.IPv6 = primaryIPv6
}
createOpts.PublicNet = publicNetConfiguration
if len(userDataFiles) == 1 {
var data []byte
if userDataFiles[0] == "-" {
data, err = io.ReadAll(os.Stdin)
} else {
data, err = os.ReadFile(userDataFiles[0])
}
if err != nil {
return
}
createOpts.UserData = string(data)
} else if len(userDataFiles) > 1 {
createOpts.UserData, err = buildUserData(userDataFiles)
if err != nil {
return
}

createOpts.UserData, err = buildUserData(userDataFiles)
if err != nil {
return
}

if !flags.Changed("ssh-key") && config.OptionDefaultSSHKeys.Changed(s.Config()) {
Expand Down
16 changes: 15 additions & 1 deletion internal/cmd/server/rebuild.go
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ import (
var RebuildCmd = base.Cmd{
BaseCobraCommand: func(client hcapi2.Client) *cobra.Command {
cmd := &cobra.Command{
Use: "rebuild [--allow-deprecated-image] --image <image> <server>",
Use: "rebuild [options] --image <image> <server>",
Short: "Rebuild a server",
ValidArgsFunction: cmpl.SuggestArgs(cmpl.SuggestCandidatesF(client.Server().Names)),
TraverseChildren: true,
Expand All @@ -26,8 +26,11 @@ var RebuildCmd = base.Cmd{
cmd.Flags().String("image", "", "ID or name of Image to rebuild from (required)")
_ = cmd.RegisterFlagCompletionFunc("image", cmpl.SuggestCandidatesF(client.Image().Names))
_ = cmd.MarkFlagRequired("image")

cmd.Flags().Bool("allow-deprecated-image", false, "Enable the use of deprecated images (default: false) (true, false)")

cmd.Flags().StringArray("user-data-from-file", []string{}, "Read user data from specified file (use - to read from stdin)")

return cmd
},
Run: func(s state.State, cmd *cobra.Command, args []string) error {
Expand All @@ -41,6 +44,8 @@ var RebuildCmd = base.Cmd{
}

imageIDOrName, _ := cmd.Flags().GetString("image")
userDataFiles, _ := cmd.Flags().GetStringArray("user-data-from-file")

// Select correct image based on Server Type architecture
image, _, err := s.Client().Image().GetForArchitecture(s, imageIDOrName, server.ServerType.Architecture)
if err != nil {
Expand All @@ -63,6 +68,15 @@ var RebuildCmd = base.Cmd{
opts := hcloud.ServerRebuildOpts{
Image: image,
}

if len(userDataFiles) > 0 {
userData, err := buildUserData(userDataFiles)
if err != nil {
return err
}
opts.UserData = &userData
}

result, _, err := s.Client().Server().RebuildWithResult(s, server, opts)
if err != nil {
return err
Expand Down