四、配置前提（1）-安裝時間伺服器與dns伺服器
4.1 配置時間伺服器。
[root@room8pc205 ~]# yum -y install chrony
server配置檔案（只需更改我寫出來的）
[root@room8pc205 ~]# vim /etc/chrony.conf
server ntp.aliyun.com iburst
bindacqaddress 0.0.0.0 #時間伺服器監聽地址（0.0.0.0表示所有地址）
allow 0/0
cmdallow 127.0.0.1
[root@room8pc205 ~]# systemctl restart chronyd.service
[root@room8pc205 ~]# chronyc sources –v
client 配置檔案
[root@client ~]# vim /etc/chrony.conf
server 192.168.1.105 iburst
cmdallow 127.0.0.1
[root@room8pc205 ~]# systemctl restart chronyd.service
4.2 配置轉發DNS伺服器
[root@room8pc205 桌面]# yum -y install bind-chroot
13listen-on port 53 { 192.168.1.105; };
14#listen-on-v6 port 53 { ::1; };
21allow-query { any; };
34forwarders { 61.139.2.69; };
35 dnssec-enable no;
36 dnssec-validation no;
[root@room8pc205 桌面]# systemctl restart named
測試
[root@room8pc205 桌面]# nslookup
> server 192.168.1.105
Default server: 192.168.1.105
Address: 192.168.1.105#53
> set q=a
> www.baidu.com
Server: 192.168.1.105
Address: 192.168.1.105#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
>
注：不能安裝在OpenStack服務上