| Re: [chrony-users] Two Issues |
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On Thu, Mar 12, 2015 at 11:01:34AM -0400, Weary1 wrote:
> BTW... This is far from important, but I'm curious: Sometimes, but ONLY
> sometimes, when I issue a "chronyc sources -v" command, the response
> hesitates significantly (up to several seconds) at one or more points in the
> server list, as if it is having trouble finding the data. What would cause
> this?
That's chronyc translating the IP addresses to names and DNS not
responding quickly enough. Use "chronyc -n" to avoid DNS lookups.
> >Delaying start of chronyd until network is probably a better idea.
>
> Any ideas on exactly how to do this? I've yet to really get my head wrapped
> around the Debian start-up sequence, with its branched "run levels" and
> funky coded script-filenames scheme, and all that; and I'm more than a
> little gun-shy about making changes I'm not sure of, lest I *really* screw
> something up.
I'm not sure what's the best way to do this on Debian, it will depend
on the networking service/manager. With dhclient, it should be
possible to (re)start chronyd from a hook script, see the
dhclient-script(8) man page.
> >You could also try cleaning /etc/resolv.conf before chronyd is
> >started, so it would keep trying resolving until the DHCP client
> >starts and rewrites the file.
>
> Again, how exactly would I "clean" /etc/resolv.conf ?
If there is no proper way, add a service that starts before chronyd
and runs "> /etc/resolv.conf".
> It already looks pretty clean to me; just four lines:
>
> domain <my domain name>
> search <my domain name>
> nameserver <IP address of my LAN's FW/router)
> (which serves DHCP to the rest of the network)
> nameserver <IP address of my ISP's primary DNS server>
The nameservers shouldn't be there until the network is up. That
would possibly change the resolver's failure from permanent to
temporary and chronyd would try again.
--
Miroslav Lichvar
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