我们如何才能够了解DNS服务器的运行情况下呢，它忙不忙、负载大不大?这一切，对于系统管理员而言，是比较重要的。

# touch /var/named/chroot/var/named/named.log

# chown named.named /var/named/chroot/var/named/named.log

# chmod 755 /var/named/chroot/var/named/named.log

# service named restart

并且确保selinux是关闭状态(查看/etc/sysconfig/selinux配置信息)

然后查看采集到的/var/named/chroot/var/named/named.log是否存在故障信息；

#LOG 配置信息：

logging{

channel default_syslog { syslog local2; severity error; };

channel audit_log {

file “named.log” versions 3 size 20m;

severity info;

print-time yes;

print-category yes;

};

category default { audit_log; };

category general { audit_log; };

category security { audit_log; default_syslog; };

category config { default_syslog; };

category resolver { audit_log; };

category xfer-in { audit_log; };

category xfer-out { audit_log; };

category notify { audit_log; };

category client { audit_log; };

category network { audit_log; };

category update { audit_log; };

category queries { audit_log; };

category lame-servers { audit_log; };