在named中设置能够记录每一次查询DNS服务器的记录。
在/etc/named.conf 中加入如下内容：
logging{
channel "bind_log" {
file "/var/log/named/bind.log" versions 3 size 25m;
severity info;
print-time yes;
print-severity yes;
print-category yes;
};
channel "query_log" {
file "/var/log/named/query.log" versions 3 size 25m;
severity info;
print-time yes;
print-category yes;
};
category lame-servers { null; };
category queries { "query_log"; };
category default{ "bind_log"; };
};
