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feat: add --hostname flag to customize the vm hostname

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Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>
This commit is contained in:
adphi
2026-01-21 17:11:38 +01:00
parent 75a9f8d9a9
commit f799dc4891
9 changed files with 26 additions and 3 deletions
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10
builder.go
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@@ -83,9 +83,11 @@ type builder struct {
cmdLineExtra string
arch string
hostname string
}
func NewBuilder(ctx context.Context, workdir, imgTag, disk string, size uint64, osRelease OSRelease, format string, cmdLineExtra string, splitBoot bool, bootFS BootFS, bootSize uint64, luksPassword string, bootLoader string, platform string) (Builder, error) {
func NewBuilder(ctx context.Context, workdir, imgTag, disk string, size uint64, osRelease OSRelease, format string, cmdLineExtra string, splitBoot bool, bootFS BootFS, bootSize uint64, luksPassword string, bootLoader string, platform, hostname string) (Builder, error) {
var arch string
switch platform {
case "linux/amd64":
@@ -179,6 +181,9 @@ func NewBuilder(ctx context.Context, workdir, imgTag, disk string, size uint64,
// logrus.Warnf("%s is smaller than rootfs size, using %s", datasize.ByteSize(size), s)
// size = int64(s)
// }
if hostname == "" {
hostname = "localhost"
}
b := &builder{
osRelease: osRelease,
config: config,
@@ -195,6 +200,7 @@ func NewBuilder(ctx context.Context, workdir, imgTag, disk string, size uint64,
bootFS: bootFS,
luksPassword: luksPassword,
arch: arch,
hostname: hostname,
}
if err := b.checkDependencies(); err != nil {
return nil, err
@@ -412,7 +418,7 @@ func (b *builder) setupRootFS(ctx context.Context) (err error) {
if err := b.chWriteFileIfNotExist("/etc/resolv.conf", "nameserver 8.8.8.8", 0644); err != nil {
return err
}
if err := b.chWriteFileIfNotExist("/etc/hostname", "localhost", perm); err != nil {
if err := b.chWriteFile("/etc/hostname", b.hostname+"\n", perm); err != nil {
return err
}
if err := b.chWriteFileIfNotExist("/etc/hosts", hosts, perm); err != nil {