[systemd-devel] Understanding DHCP, DNS and IPMasquerade

Lennart Poettering lennart at poettering.net
Mon Jun 15 11:32:25 PDT 2015


On Mon, 15.06.15 10:39, Johannes Ernst (johannes.ernst at gmail.com) wrote:

> 
> > On Jun 15, 2015, at 10:33, Lennart Poettering <lennart at poettering.net> wrote:
> > 
> > On Mon, 15.06.15 10:32, Johannes Ernst (johannes.ernst at gmail.com <mailto:johannes.ernst at gmail.com>) wrote:
> > 
> >> 
> >>> On Jun 14, 2015, at 15:27, Lennart Poettering <lennart at poettering.net> wrote:
> >>> 
> >>> On Fri, 12.06.15 17:32, Johannes Ernst (johannes.ernst at gmail.com) wrote:
> >>> 
> >>>> * host and container can ping test (if test is the name of the
> >>>> * container machine per machinectl): FAILS, neither can
> >>> 
> >>> Do you have nss-mymachines enabled in /etc/nsswitch.conf?
> >> 
> >> Yes:
> >> 
> >>> Does pinging via the IP addresses work? 
> >> 
> >> Yes. Both container->host and host->container.
> >> 
> >> On host:
> >>> machinectl
> >> MACHINE CLASS     SERVICE
> >> foo     container nspawn 
> >> 
> >> 1 machines listed.
> >>> ping foo
> >> ping: unknown host foo
> >>> cat /etc/nsswitch.conf 
> >> hosts: nss-mymachines files mdns_minimal [NOTFOUND=return] dns
> >>myhostname

Ah, heh, try "mymachines" instead of "nss-mymachines"... Also see
nss-mymachines(8) man page. That should fix your issue.

Lennart

-- 
Lennart Poettering, Red Hat


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