DNS: dns4-exercise3.txt

DNS Exercise 4.3: Setting up Flexible Logging
=============================================

Named logs by default are sent and captured in the /var/log/messages file.
Other log messages are by default also sent to the /var/log/messages file.
It is possible to change where BIND or named sends its log files. This
exercise demonstrates how to change where BIND or named captures its logs.

Edit the `/etc/namedb/named.conf` file and make the following
entries just below the options { ...}; section.

>       logging {
>               channel default_log {
>                       file "/var/log/named.log" versions 3 size 10m;
>                       print-time yes;
>                       print-category yes;
>                       print-severity yes;
>                       severity info;
>               };
>       
>               channel xfrs {
>                       file "/var/log/xfer.log" versions 5 size 5m;
>                       print-time yes;
>                       print-category yes;
>                       print-severity yes;
>                       severity info;
>               };
>       
>               channel qrs {
>                       file "/var/log/queries.log" versions 5 size 5m;
>                       print-time yes;
>                       print-category yes;
>                       print-severity yes;
>                       severity info;
>               };
>       
>               category default { default_log; };
>               category xfer-in { xfrs; };
>               category xfer-out { xfrs; };
>               category queries { qrs; };
>       };

o Reconfigure your nameserver using `rndc reconfig`

        # rndc reconfig

o Look into the `/var/named/var/log` directory, you should see the 
  following files `named.log`, `queries.log` and `xfer.log`.

Now default logging will be to named.log, query logs in the queries.log file,
and zone transfer logs will be in xfer.log.