注：本文来源：张亮博客 的 《centos 7.3 设置静态IP或ping 报name or service not known》
首先把虚拟机配置为桥接模式，然后开启
再你打算修改虚拟机IP之前首先ping下127.0.0.1看看网卡是否是好的（如果127.0.0.1都ping不通的话，那网卡就是坏的了…）
1 [root@localhost /]# ping 127.0.0.1
2 PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data.
3 64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0.106 ms
4 64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0.095 ms
5 64 bytes from 127.0.0.1: icmp_seq=3 ttl=64 time=0.097 ms
6 64 bytes from 127.0.0.1: icmp_seq=4 ttl=64 time=0.073 ms
7 64 bytes from 127.0.0.1: icmp_seq=5 ttl=64 time=0.058 ms
8 64 bytes from 127.0.0.1: icmp_seq=6 ttl=64 time=0.097 ms
9 64 bytes from 127.0.0.1: icmp_seq=7 ttl=64 time=0.375 ms
10 ^C64 bytes from 127.0.0.1: icmp_seq=8 ttl=64 time=0.733 ms
11 64 bytes from 127.0.0.1: icmp_seq=9 ttl=64 time=0.095 ms
12 64 bytes from 127.0.0.1: icmp_seq=10 ttl=64 time=0.102 ms
13 ^C
14 --- 127.0.0.1 ping statistics ---
15 10 packets transmitted, 10 received, 0% packet loss, time 9006ms
16 rtt min/avg/max/mdev = 0.058/0.183/0.733/0.202 ms
17 [root@localhost /]#
在设置静态IP之前可以先看下自己当前开启的网卡：
1 [root@localhost /]# ifconfig
2 ens32: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
3 inet 192.168.0.121 netmask 255.255.255.0 broadcast 192.168.0.255
4 inet6 fe80::9474:4a7c:66fd:8d90 prefixlen 64 scopeid 0x20<link>
5 ether 00:0c:29:e5:c1:96 txqueuelen 1000 (Ethernet)
6 RX packets 4436 bytes 372786 (364.0 KiB)
7 RX errors 0 dropped 0 overruns 0 frame 0
8 TX packets 871 bytes 147085 (143.6 KiB)
9 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
10
11 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
12 inet 127.0.0.1 netmask 255.0.0.0
13 inet6 ::1 prefixlen 128 scopeid 0x10<host>
14 loop txqueuelen 1 (Local Loopback)
15 RX packets 16 bytes 1320 (1.2 KiB)
16 RX errors 0 dropped 0 overruns 0 frame 0
17 TX packets 16 bytes 1320 (1.2 KiB)
18 TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
19
20 [root@localhost /]#
1.设置网卡ens32静态IP
1 [root@localhost /]# cd /etc/sysconfig/network-scripts/ #注意点cd与“/etc”之间的空格
2 [root@localhost network-scripts]#
3 [root@localhost network-scripts]# ls #查看network-scripts下的所有文件
4 ifcfg-ens32 ifdown-eth ifdown-isdn ifdown-sit ifup ifup-ib ifup-plip ifup-routes ifup-tunnel network-functions-ipv6
5 ifcfg-lo ifdown-ib ifdown-post ifdown-Team ifup-aliases ifup-ippp ifup-plusb ifup-sit ifup-wireless
6 ifdown ifdown-ippp ifdown-ppp ifdown-TeamPort ifup-bnep ifup-ipv6 ifup-post ifup-Team init.ipv6-global
7 ifdown-bnep ifdown-ipv6 ifdown-routes ifdown-tunnel ifup-eth ifup-isdn ifup-ppp ifup-TeamPort network-functions
8 [root@localhost network-scripts]#
9
10
11 使用vi进行编辑
12 [root@localhost network-scripts]# vi ifcfg-ens32
13 【点击i 进行插入 完成之后Esc 并输入:wq 进行保存】
14 [root@localhost network-scripts]# vi ifcfg-ens32
15 TYPE="Ethernet"
16 BOOTPROTO="static" #启用静态IP地址
17 DEFROUTE="yes"
18 PEERDNS="yes"
19 PEERROUTES="yes"
20 IPV4_FAILURE_FATAL="no"
21 IPV6INIT="yes"
22 IPV6_AUTOCONF="yes"
23 IPV6_DEFROUTE="yes"
24 IPV6_PEERDNS="yes"
25 IPV6_PEERROUTES="yes"
26 IPV6_FAILURE_FATAL="no"
27 IPV6_ADDR_GEN_MODE="stable-privacy"
28 NAME="ens32"
29 UUID="17e371b3-5107-4d72-a58f-e8f71396fd68"
30 DEVICE="ens32"
31 ONBOOT="yes"
32 IPADDR=“192.168.0.121”
33 GATEWAY=“192.168.0.1”
34
35 修改：
36 BOOTPROTO=“static” #启用静态IP地址
37 加入个：
38 IPADDR=“192.168.0.121” #设置IP地址
39 GATEWAY=“192.168.0.1” #设置网关
【注意】设置好后保存！
然后重启网络吧：
1 [root@localhost ~]# service network restart #重启网络
2 Restarting network (via systemctl): [ OK ]
3 [root@localhost ~]#
4
5
6 [root@localhost ~]# ping 192.168.0.107 #ping局域网内的IP正常
7 PING 192.168.0.107 (192.168.0.107) 56(84) bytes of data.
8 64 bytes from 192.168.0.107: icmp_seq=1 ttl=64 time=0.759 ms
9 64 bytes from 192.168.0.107: icmp_seq=2 ttl=64 time=1.07 ms
10 64 bytes from 192.168.0.107: icmp_seq=3 ttl=64 time=0.615 ms
11 ^C
12 --- 192.168.0.107 ping statistics ---
13 3 packets transmitted, 3 received, 0% packet loss, time 2004ms
14 rtt min/avg/max/mdev = 0.615/0.816/1.076/0.195 ms
15 [root@localhost ~]# ping www.baidu.com #ping百度域名还是不行
16 ping: www.baidu.com: Name or service not known #出现这个错误