Verify dnsmasq configuration
Solution 1
dnsmasq will print errors to the terminal if you run it directly.
dnsmasq --test
will do basic syntax checks on the config files
dnsmasq
on its own will try to start dnsmasq, and gives a line number in the config if it finds any problems there.
Otherwise (if you don't use sudo
), it should eventually reach the stage where it tries to create a lease, but fails due to permissions. If you use sudo
at this point it should hopefully work, but then you may have to kill
the process manually.
Solution 2
AFAIK dnsmasq will normally log to the syslog service. By default it uses facility DAEMON.
FWIW: "It works for me" (in Fedora 18 / 19).
If you aren't seeing any messages I'd suggest verifying your syslog configuration. Or, a more emperical approach, try something like "grep -c dnsmasq /var/log/*".
See also the detailed description of logging in the manual page here: http://www.thekelleys.org.uk/dnsmasq/docs/dnsmasq-man.html
There are some other possibilities for logging mentioned there that can effect its behaviour e.g. if facility contains a '/' character.
Are other subsystems (sys-)logging correctly? Can you cause syslog to log a message by using the 'logger' command?
HTH!
Robb.
Solution 3
DNSMASQ is one of the common DNS/DHCP cace solution on linux/unix, some good links:
help.ubuntu.com/community/Dnsmasq manpages.ubuntu.com/manpages/lucid/man8/dnsmasq.8.html wiki.debian.org/HowTo/dnsmasq
- Verification steps: Turn on the debug logging under /etc/dnsmasq.conf:
log-queries
log-dhcp
- Then, restart and watch for logs when you dig hostname:
On debian variants, it dnsmasq logs by default in /var/log/syslog.
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Updated on September 18, 2022Comments
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How to verify
dnsmasq
's configuration?dnsmasq
used to be able to give verbose info about itself in/var/log/daemon.log
, as explained in dnsmasq testing.However, when I restarted my dnsmasq service, nothing is logged to
/var/log/daemon.log
:% echo " *** DEBUG `date --rfc-3339=seconds` DEBUG *** " >> /var/log/daemon.log % service dnsmasq restart * Restarting DNS forwarder and DHCP server dnsmasq [ OK ] % tail /var/log/daemon.log *** DEBUG 2013-11-27 23:04:08-05:00 DEBUG ***
This is Ubuntu 13.10 Saucy.