[Dnsmasq-discuss] Debugging dnsmasq on Ubuntu
bgalvani at redhat.com
Wed Mar 29 16:21:59 BST 2017
On Wed, Mar 29, 2017 at 09:43:33AM -0500, Joel Whitehouse wrote:
> I'm running ubuntu 14, which uses dnsmasq as a local resolver on 127.0.1.1.
> When I issue a dig query, dig informs me it's using 127.0.1.1 as its
> ;; Query time: 3 msec
> ;; SERVER: 127.0.1.1#53(127.0.1.1)
> ;; WHEN: Wed Mar 29 09:36:06 CDT 2017
> ;; MSG SIZE rcvd: 63
> However, I would like to know what host dnsmasq is using as its resolver.
> On my system, `ps ax' shows that dnsmasq is started with the command:
> /usr/sbin/dnsmasq --no-resolv --keep-in-foreground --no-hosts
> --listen-address=127.0.1.1 --conf-file=/var/run/NetworkManager/dnsmasq.conf
> --cache-size=0 --proxy-dnssec
> Both the file /var/run/NetworkManager/dnsmasq.conf and the directory
> /etc/NetworkManager/dnsmasq.d/ are empty, so it's likely that dnsmasq is
> receiving its resovlers from Network Manager over the dbus interface.
Correct. You should find in system logs the list of name servers pushed
by NM to dnsmasq through D-Bus:
dnsmasq: setting upstream servers from DBus
dnsmasq: using nameserver 192.168.10.1#53(via ens3)
With NM > 1.6 name servers in use are also printed in the 'nmcli'
> Is there any way to get dnsmasq to log when it issues a new query to a
echo log-queries > /etc/NetworkManager/dnsmasq.d/log-queries
and restart NetworkManager.
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