Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #206331

Re: systemd: how to start a service (kea DHCP4) after all network interfaces are up?

Show all headers | View raw

On Sat, Mar 16, 2019 at 12:31:50PM +0100, Markus Schönhaber wrote:
> Hi,
> 
> I have installed the kea DHCP4 server on a machine running recent
> stretch and two ethernet interfaces. kea is configured to answer DHCP
> requests on one of the interfaces.
> On boot, the kea-dhcp4-server.service is started but doesn't work. It
> logs this:
> > DHCPSRV_OPEN_SOCKET_FAIL failed to open socket: the interface enp3s0 is down or has no usable IPv4 addresses configured
> After manually restarting the service it works fine.
> 
> It seems that the DHCP server is started while the interface it is
> configured to listen on is not yet up and therefore refuses to work.
> How can I make sure that the kea-dhcp4-server.service is started no
> sooner than after all network interfaces are up?
> 
> What I've tried:
> 1 Copied /lib/systemd/system/kea-dhcp4-server.service to
>   /etc/systemd/system and added
>   Wants=networking.service
>   After=networking.service
>   to the [Unit] section of the copy.
>   The problem remained.
> 2 Created a shell script that does a
>   sleep 5
>   before exec'ing the original
>   /usr/sbin/kea-dhcp4 -c /etc/kea/kea-dhcp4.conf
>   and replaced the unit's ExexStart line with the path to this script.
> 
> 2 does indeed help: the dhcp server works as it should after a reboot.
> Well, this is a workaround at best, a terrible mess at worst, but it's
> definitely not a solution. So I hope someone can answer my question above.
> 
> -- 
> Regards
>   mks
> 


I am coming late to this thread. 
Have you considered to switch from /e/n/i to systemd-networkd?
I think that would solve the problem.

-H

-- 
Henning Follmann           | hfollmann@itcfollmann.com

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

systemd: how to start a service (kea DHCP4) after all network  interfaces are up? Markus Schönhaber <debian-user@list-post.mks-mail.de> - 2019-03-16 12:50 +0100
  Re: systemd: how to start a service (kea DHCP4) after all network  interfaces are up? john doe <johndoe65534@mail.com> - 2019-03-16 14:40 +0100
    Re: systemd: how to start a service (kea DHCP4) after all network  interfaces are up? Markus Schönhaber <debian-user@list-post.mks-mail.de> - 2019-03-16 19:40 +0100
      Re: systemd: how to start a service (kea DHCP4) after all network interfaces are up? Sven Joachim <svenjoac@gmx.de> - 2019-03-16 21:30 +0100
        Re: systemd: how to start a service (kea DHCP4) after all network  interfaces are up? Markus Schönhaber <debian-user@list-post.mks-mail.de> - 2019-03-17 17:20 +0100
  Re: systemd: how to start a service (kea DHCP4) after all network  interfaces are up? Greg Wooledge <wooledg@eeg.ccf.org> - 2019-03-18 13:50 +0100
    Re: systemd: how to start a service (kea DHCP4) after all network  interfaces are up? Markus Schönhaber <debian-user@list-post.mks-mail.de> - 2019-03-18 14:30 +0100
      Re: systemd: how to start a service (kea DHCP4) after all network  interfaces are up? Curt <curty@free.fr> - 2019-03-18 18:50 +0100
  Re: systemd: how to start a service (kea DHCP4) after all network  interfaces are up? Henning Follmann <hfollmann@itcfollmann.com> - 2019-03-18 20:30 +0100
    Re: systemd: how to start a service (kea DHCP4) after all network  interfaces are up? Markus Schönhaber <debian-user@list-post.mks-mail.de> - 2019-03-18 21:00 +0100

csiph-web