說明：本次說明是基於NAT的網絡配置
1.系統安裝好了以後ping了一下宿主機,通的,但就是無法連接外網,ip addr之後發現 ens33這塊網卡沒有ip地址
2.下面開始配置靜態IP地址
cd /etc/sysconfig/network-scripts
vi ifcfg-ens33
------------------------------------------------------------------------------------------
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=09db5df2-31e3-4f18-84d9-5703aad1c6ee
DEVICE=ens33
ONBOOT=yes
IPV6_PRIVACY=no
IPADDR=192.168.175.100
GATEWAY=192.168.175.2
DNS1=192.168.175.2
3.改完之後重啓網絡
systemctl restart network
ping: www.baidu.com: 未知的名稱或服務 發現依然ping不通外網
4.這是因爲沒有配置DNS解析服務導致的,添加DNS配置
cd /etc
vi resolv.conf
添加如下的配置
-------------------------------------------------------------------------------------------
search localdomain
nameserver 8.8.8.8
nameserver 8.8.4.4
5. 重啓網絡服務
systemctl restart network
再次ping百度,通了
[root@localhost ~]# ping www.baidu.com
PING www.a.shifen.com (39.156.66.18) 56(84) bytes of data.
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=1 ttl=128 time=8.38 ms
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=2 ttl=128 time=7.71 ms
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=3 ttl=128 time=8.21 ms
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=4 ttl=128 time=8.09 ms
64 bytes from 39.156.66.18 (39.156.66.18): icmp_seq=5 ttl=128 time=7.97 ms