func runConfig(config *cloudinit.CloudConfig) error {
f, err := ioutil.TempFile("", "rackspace-cloudinit-")
if err != nil {
return err
}
log.Println("writing to:", f.Name())
_, err = f.WriteString(config.String())
if err != nil {
return err
}
// systemd-run coreos-cloudinit --file f.Name()
props := []dbus.Property{
dbus.PropDescription("Unit generated and executed by coreos-cloudinit on behalf of user"),
dbus.PropExecStart([]string{"/usr/bin/coreos-cloudinit", "--from-file", f.Name()}, false),
}
tmp_file := filepath.Base(f.Name())
name := fmt.Sprintf("%s.service", tmp_file)
log.Printf("Creating transient systemd unit '%s'", name)
conn, err := dbus.New()
if err != nil {
return err
}
_, err = conn.StartTransientUnit(name, "replace", props...)
return err
}
func StartUnitByName(name string) error {
conn, err := dbus.New()
if err != nil {
return err
}
_, err = conn.StartUnit(name, "replace")
return err
}
func DaemonReload() error {
conn, err := dbus.New()
if err != nil {
return err
}
_, err = conn.Reload()
return err
}
func EnableUnitFile(file string, runtime bool) error {
conn, err := dbus.New()
if err != nil {
return err
}
files := []string{file}
_, _, err = conn.EnableUnitFiles(files, runtime, true)
return err
}
func RestartUnitByName(name string) error {
log.Printf("Restarting unit %s", name)
conn, err := dbus.New()
if err != nil {
return err
}
output, err := conn.RestartUnit(name, "replace")
log.Printf("Restart completed with '%s'", output)
return err
}
func ExecuteScript(scriptPath string) (string, error) {
props := []dbus.Property{
dbus.PropDescription("Unit generated and executed by coreos-cloudinit on behalf of user"),
dbus.PropExecStart([]string{"/bin/bash", scriptPath}, false),
}
base := path.Base(scriptPath)
name := fmt.Sprintf("coreos-cloudinit-%s.service", base)
log.Printf("Creating transient systemd unit '%s'", name)
conn, err := dbus.New()
if err != nil {
return "", err
}
_, err = conn.StartTransientUnit(name, "replace", props...)
return name, err
}