[systemd-devel] how to properly control the daemons or run advanced cmds

"J├│hann B. Gu├░mundsson" johannbg at gmail.com
Tue Dec 2 04:37:09 PST 2014


On 11/25/2014 02:09 AM, Flavio Leitner wrote:
> Hello,
>
> The Open vSwitch is comprised by two daemons. One is a database and
> another is the switch itself.
>
> Currently we have the openvswitch.service which start/stop/reload the
> service (both daemons) just fine.
>
> However, we need to support hot-upgrade which means to stop the
> vswitch daemon first, run a few special commands, reload the db
> daemon and only then start the vswitch daemon.
>
> I know about creating shell helpers for non-standard commands, but
> since that needs to mess up with the daemons in a particular order,
> I think systemd won't like the above external actions at all.
>
> Any suggestion on how to handle this with systemd properly?

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