六、配置前提（3）-配置两台虚拟服务器的dns与时间服务器

6.1 dns服务器（host1与host2）
1.1 配置文件的修改
[root@host1 ~]# vim /etc/resolv.conf
[root@room8pc205 ~]# virsh start host1
; generated by /usr/sbin/dhclient-script
nameserver 192.168.1.106
search localdomain
1.2 测试
[root@host1 ~]# yum provides nslookup
[root@host1 ~]# nslookup
> server 192.168.1.106
Default server: 192.168.1.106
Address: 192.168.1.106#53
> set q=a
> www.baidu.com
Server: 192.168.1.106
Address: 192.168.1.106#53

Non-authoritative answer:
www.baidu.com canonical name = www.a.shifen.com.
Name: www.a.shifen.com
Address: 14.215.177.39
Name: www.a.shifen.com
Address: 14.215.177.38
> exit
6.2 配置时间服务器
[root@host1 ~]# vim /etc/chrony.conf
server 192.168.1.106 iburst
[root@host1 ~]# systemctl restart chronyd
[root@host1 ~]# chronyc sources –v
210 Number of sources = 1
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^* 192.168.1.106 3 6 37 8 -107ns[ -14us] +/- 32ms