Hi, max_connections is set to 500 and we're not hitting it.
Thanks, Rob. On Fri, 8 Feb 2019 at 08:52, Otto Moerbeek <o...@drijf.net> wrote: > On Thu, Feb 07, 2019 at 05:11:57PM +0000, Rob Campbell wrote: > > > Hi, > > > > I'm trying to switch from mydns-ng to powerdns 4.1.6 with the mydns > > backend. It seems to be working fine on my quietest nameserver but on a > > busy one it starts returning REFUSED to queries after a few minutes and I > > can't work out why as it's not logging any errors. I tried setting > > loglevel=6 and still didn't get anything logged. How can I get some logs > > showing why it's returning REFUSED? > > Seems like we ramp up to over 70 TCP connections quite quickly and we're > > fine at first but once we hit that many either the backend can't keep up > or > > we're hitting some limit I've not found. > > Try checking the mysql max_connections parameter. That is a parameter > that can be set in the my.cnf config file and runtime as well iirc. > Mysql will normally log an error if the max connection limit is hit. > Where it logs is depedendent on its configuration. > > > https://dev.mysql.com/doc/refman/5.5/en/server-system-variables.html#sysvar_max_connections > > Replace the version with your particular mysql version. > > I do not know how many mysql connections the mydns backend is supposed > to use. If increasing the limit does not work out, we can investiate > further. > > Migration to the gmysql backend is a good thing, considering the > limited features of the mydns backend. > > -Otto > > > > > Config is: > > > > launch= > > security-poll-suffix= > > server-id= > > include-dir=/etc/powerdns/pdns.d > > setgid=pdns > > setuid=pdns > > version-string=anonymous > > max-tcp-connections=1024 > > receiver-threads=8 > > reuseport=yes > > cache-ttl=60 > > loglevel=6 > > launch+=mydns > > mydns-soa-active=no > > mydns-rr-active=no > > > > Can anyone help me work out why it's refusing queries? > > > > Kind regards, > > Rob Campbell. > > > _______________________________________________ > > Pdns-users mailing list > > Pdns-users@mailman.powerdns.com > > https://mailman.powerdns.com/mailman/listinfo/pdns-users > >
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