注：本文來源：張亮博客 的 《centos 7.3 設置靜態IP或ping 報name or service not known》
首先把虛擬機配置為橋接模式，然后開啟
再你打算修改虛擬機IP之前首先ping下127.0.0.1看看網卡是否是好的（如果127.0.0.1都ping不通的話，那網卡就是壞的了…）
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 /]#
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在設置靜態IP之前可以先看下自己當前開啟的網卡：
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.設置網卡ens32靜態IP
1 [root@localhost /]# cd /etc/sysconfig/network-scripts/ #注意點cd與“/etc”之間的空格 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進行編輯 12 [root@localhost network-scripts]# vi ifcfg-ens32 13 【點擊i 進行插入 完成之后Esc 並輸入:wq 進行保存】 14 [root@localhost network-scripts]# vi ifcfg-ens32 15 TYPE="Ethernet" 16 BOOTPROTO="static" #啟用靜態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” #啟用靜態IP地址 37 加入個： 38 IPADDR=“192.168.0.121” #設置IP地址 39 GATEWAY=“192.168.0.1” #設置網關
【注意】設置好后保存！
然后重啟網絡吧：
1 [root@localhost ~]# service network restart #重啟網絡 2 Restarting network (via systemctl): [ OK ] 3 [root@localhost ~]# 4 5 6 [root@localhost ~]# ping 192.168.0.107 #ping局域網內的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百度域名還是不行 16 ping: www.baidu.com: Name or service not known #出現這個錯誤