LINUX安装好后无法访问网络
在虚拟机安装好新的LINUX系统后，ping www.baidu.com ，发现无法ping通。
键入ifconfig查询配置：
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eno16777728: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 |
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ether 00:0c:29:3e:ad:2d txqueuelen 1000 (Ethernet) |
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RX packets 0 bytes 0 (0.0 B) |
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RX errors 0 dropped 0 overruns 0 frame 0 |
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TX packets 0 bytes 0 (0.0 B) |
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TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 |
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lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 |
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inet 127.0.0.1 netmask 255.0.0.0 |
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inet6 ::1 prefixlen 128 scopeid 0x10<host> |
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loop txqueuelen 0 (Local Loopback) |
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RX packets 942 bytes 79580 (77.7 KiB) |
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RX errors 0 dropped 0 overruns 0 frame 0 |
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TX packets 942 bytes 79580 (77.7 KiB) |
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TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 |
得到本机的网卡是eno16777728
然后，重启网卡服务：service network restart
再次查询：ifconfig,发现依旧如上所示，并且无法访问网络。
修改网卡配置： root模式下vim /etc/sysconfig/network-scripts/ifcfg-eno16777728（最后的数字不一定一致，不要照搬，根据查询出来的配置信息灵活替换），然后将文件里最后一项的ONBOOT=no在插入模式中修改为yes并保存退出,以后计算机自动启动网卡。
现在手动启动网卡服务ifup eno16777736
重新键入ifconfig：
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eno16777728: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 |
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inet 192.168.81.134 netmask 255.255.255.0 broadcast 192.168.81.255 |
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inet6 fe80::20c:29ff:fe3e:ad2d prefixlen 64 scopeid 0x20<link> |
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ether 00:0c:29:3e:ad:2d txqueuelen 1000 (Ethernet) |
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RX packets 125 bytes 14963 (14.6 KiB) |
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RX errors 0 dropped 0 overruns 0 frame 0 |
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TX packets 147 bytes 15265 (14.9 KiB) |
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TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 |
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lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 |
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inet 127.0.0.1 netmask 255.0.0.0 |
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inet6 ::1 prefixlen 128 scopeid 0x10<host> |
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loop txqueuelen 0 (Local Loopback) |
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RX packets 946 bytes 80000 (78.1 KiB) |
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RX errors 0 dropped 0 overruns 0 frame 0 |
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TX packets 946 bytes 80000 (78.1 KiB) |
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TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 |
问题解决，网卡服务成功启动，并且后续不需要每次都手动启动网卡服务
本文参照：http://114193107.blog.51cto.com/3025337/1676433