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Kendall
Asked: 2011-12-14 15:22:16 +0800 CST

BIND zone statistics tracking?

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I am trying to get an accurate estimate of how many queries/{day,week,month} my DNS servers process for a specific subset of zones. I ran "rndc stats" and got a statistics file out of the deal, but it includes queries for ALL zones, and I need statistics for only a subset. I have the thought that this can be accomplished by adding "zone-statistics no" to the zone{ } part of the zone file, but I'm not confident to just try it and see what happens. Is this the correct procedure, or is there another way?

OS: OpenSuSE 11.2 BIND: 9.5

Thanks,

Kendall

linux bind

3 Answers

  1. Best Answer

    zone-statistics is the way.

    You either set it yes globally (in "options") and set no for non-interesting zones, or vice-versa - set no globally and yes for zones of interest.

    --cut here--

    Actually you have 3 ways to obtain statistics:

    1. rndc stats
    2. HTTP (statistics-channel)
    3. Queries log (will log ALL queries for ALL zones)

    Obviously if what you need is just statistics, 1 and 2 are the right ways. To control them per-zone you use zone-statistics statement. Logging (3) can't be controlled per zone inside BIND.

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  2. This isn't particularly elegant, but here goes.

    In your configuration (same place you'd put zone{} blocks, but not inside one), add something like this:

    logging {
    channel query_log {
        file "/var/log/named.queries"; // or somewhere else
        print-time yes;
    };
    category queries { query_log; };
 };

    You'd be responsible for analyzing the file (grep ... | wc or something) yourself.

    You might also want to consider log rotation if you don't want the file to grow forever. Bind has some built-in support for rolling over logs based on file size or named restarts, or you could use something external like logrotate. Bind's logging options are detailed at http://www.zytrax.com/books/dns/ch7/logging.html

    • 1

  3. Bind support statistics. Cjeck the detail in the Bind 9 Configuration Reference. I think you want to set zone-statistics to yes to do what you want.

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