[Pdns-users] PDNS consuming all CPU power when master or slave functionality is turned on

bert hubert ahu at ds9a.nl
Tue Jan 13 18:15:08 UTC 2004

Please read the mailinglist archives, the solution is there.

On Tue, Jan 13, 2004 at 05:31:30PM +0100, Wouter Prins wrote:
> Hi everyone,
> After having PowerDNS working perfectly with the gmysql backend i noticed a problem on one of our masters last week. The PDNS and MySQL processes was
> taking up all CPU power on one machine. After checking the slaves they were having the same problem.
> As soon as i shutdown pdns the load goes back to normal on all machines. I am running the MySQL tables with INNODB support.
> When i turn on the logging function of MySQL i see that as soon as i start up PDNS, it loops and is query'ing the DB infinitly. The query's it is
> executing is:
>                       2 Query       select id,name,master,last_check,notified_serial,type from domains where type='MASTER'
>                       2 Query       select id,name,master,last_check,type from domains where type='SLAVE'
> When i turn off master and slave support in pdns it works fine again.
> I think it is NOT a database problem because i tested it with an empty database and only the required tables and keys on it. When doing this, the
> problem still occurs. I recompiled PDNS but it didnt help.
> Versions i am using are:
> MySQL (with InnoDB) 4.0.17:
> PDNS 2.9.13
> Also, when i configure pdns to use the bind-backend with only the example zones, it consumes all CPU time..
> As soon as i turn off master or slave support everything is back to normal.
> Any help or hints would be appreciated! :-)
> Kind regards,
> Wouter Prins
> -- 
> Some men are discovered; others are found out.
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