named.conf.logging

logging {

    // Output really verbose logs to stderr (i.e. the console).
    channel std_err {
        stderr;

        // The most verbose is "debug 3", but that becomes really spammy.
        severity debug 1;

        // You probably always want these.
        print-time yes;
        print-severity yes;
        print-category yes;
    };

    // Write to a log file. But here we limit the severity level somewhat.
    channel std_log {
        // We write to a single file that may become 4 megabytes in size before
        // it is rotated, and a single copy will be maintained as history.
        file "/var/log/bind/default.log" versions 1 size 4m;

        severity info;

        print-time yes;
        print-severity yes;
        print-category yes;
    };

    // All categories which are not explicitly defined (or disabled by default)
    // will be caught by the "default" category, and then sent to all the
    // channels listed here.
    category default {
        std_err;
        std_log;
    };
};