func shutdownInitCommands(initSystem, series string) ([]string, error) {
shutdownCmd := "/sbin/shutdown -h now"
name := "juju-template-restart"
desc := "juju shutdown job"
execStart := shutdownCmd
conf := common.Conf{
Desc: desc,
Transient: true,
AfterStopped: "cloud-final",
ExecStart: execStart,
}
// systemd uses targets for synchronization of services
if initSystem == service.InitSystemSystemd {
conf.AfterStopped = "cloud-config.target"
}
svc, err := service.NewService(name, conf, series)
if err != nil {
return nil, errors.Trace(err)
}
cmds, err := svc.InstallCommands()
if err != nil {
return nil, errors.Trace(err)
}
startCommands, err := svc.StartCommands()
if err != nil {
return nil, errors.Trace(err)
}
cmds = append(cmds, startCommands...)
return cmds, nil
}
func shutdownInitCommands(initSystem, series string) ([]string, error) {
// These files are removed just before the template shuts down.
cleanupOnShutdown := []string{
// We remove any dhclient lease files so there's no chance a
// clone to reuse a lease from the template it was cloned
// from.
"/var/lib/dhcp/dhclient*",
// Both of these sets of files below are recreated on boot and
// if we leave them in the template's rootfs boot logs coming
// from cloned containers will be appended. It's better to
// keep clean logs for diagnosing issues / debugging.
"/var/log/cloud-init*.log",
}
// Using EOC below as the template shutdown script is itself
// passed through cat > ... < EOF.
replaceNetConfCmd := fmt.Sprintf(
"/bin/cat > /etc/network/interfaces << EOC%sEOC\n ",
defaultEtcNetworkInterfaces,
)
paths := strings.Join(cleanupOnShutdown, " ")
removeCmd := fmt.Sprintf("/bin/rm -fr %s\n ", paths)
shutdownCmd := "/sbin/shutdown -h now"
name := "juju-template-restart"
desc := "juju shutdown job"
execStart := shutdownCmd
if environs.AddressAllocationEnabled() {
// Only do the cleanup and replacement of /e/n/i when address
// allocation feature flag is enabled.
execStart = replaceNetConfCmd + removeCmd + shutdownCmd
}
conf := common.Conf{
Desc: desc,
Transient: true,
AfterStopped: "cloud-final",
ExecStart: execStart,
}
// systemd uses targets for synchronization of services
if initSystem == service.InitSystemSystemd {
conf.AfterStopped = "cloud-config.target"
}
svc, err := service.NewService(name, conf, series)
if err != nil {
return nil, errors.Trace(err)
}
cmds, err := svc.InstallCommands()
if err != nil {
return nil, errors.Trace(err)
}
startCommands, err := svc.StartCommands()
if err != nil {
return nil, errors.Trace(err)
}
cmds = append(cmds, startCommands...)
return cmds, nil
}