前几天我最小化安装了一下CentOS7，进入系统发现没有ifconfig这个网络配置工作，又想急着上网，那怎么办呀。下面是我给出的解决方法：
1、用光驱配置yum源，安装net-tools这个软件包（或者用rpm这个命令）。 1.1、把CentOS默认的yum源除（CentOS-Media.repo）都移动到一个指定的目录，我是在yum源配置文件存放目中建了一个叫repo的子目录，以下是具体操作：[root@bogon ~]# cd /etc/yum.repos.d/ [root@bogon yum.repos.d]# ls CentOS-Base.repo CentOS-CR.repo CentOS-Debuginfo.repo CentOS-fasttrack.repo CentO S-Media.repo CentOS-Sources.repo CentOS-Vault.repo [root@bogon yum.repos.d]# mkdir repo [root@bogon yum.repos.d]# ls CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo CentOS-Vault.repo CentOS-CR.repo CentOS-fasttrack.repo CentOS-Sources.repo repo [root@bogon yum.repos.d]# mv *.repo repo/ [root@bogon yum.repos.d]# ls repo [root@bogon yum.repos.d]# cd repo/ [root@bogon repo]# ls CentOS-Base.repo CentOS-CR.repo CentOS-Debuginfo.repo CentOS-fasttrack.repo CentO S-Media.repo CentOS-Sources.repo CentOS-Vault.repo [root@bogon repo]# mv CentOS-Media.repo ../ [root@bogon repo]# ls CentOS-Base.repo CentOS-CR.repo CentOS-Debuginfo.repo CentOS-fasttrack.repo CentO S-Sources.repo CentOS-Vault.repo [root@bogon repo]# cd .. [root@bogon yum.repos.d]# ls CentOS-Media.repo repo
1.2、挂载光驱配置yum源的具体操作步骤：
[root@bogon yum.repos.d]# mount /dev/sr0 /media/ mount: /dev/sr0 is write-protected, mounting read-only #以上是挂载光驱的命令和操作步骤 [root@bogon yum.repos.d]# cat CentOS-Media.repo [c7-media] name=CentOS-$releasever – Media baseurl=file:///media/ gpgcheck=1 enabled=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 #以上光驱yum源的配置文档 [root@bogon yum.repos.d]# yum list | wc -l 3776 #用yum list查看测试yum源是否存在问题
1.3、用yum安装net-tools工具包[root@bogon yum.repos.d]# yum install net-tools -y Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile Resolving Dependencies –> Running transaction check —> Package net-tools.x86_64 0:2.0-0.17.20131004git.el7 will be installed –> Finished Dependency Resolution ………… Running transaction Installing : net-tools-2.0-0.17.20131004git.el7.x86_64 1/1 Verifying : net-tools-2.0-0.17.20131004git.el7.x86_64 1/1 Installed: net-tools.x86_64 0:2.0-0.17.20131004git.el7 Complete!
1.4、测试ifconfig命令 [root@bogon yum.repos.d]# ifconfig eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.1.131 netmask 255.255.255.0 broadcast 192.168.1.255 inet6 fe80::20c:29ff:fe2d:c130 prefixlen 64 scopeid 0x20<link> ether 00:0c:29:2d:c1:30 txqueuelen 1000 (Ethernet) RX packets 53366 bytes 3890372 (3.7 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 47832 bytes 22949340 (21.8 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 0 (Local Loopback) RX packets 58 bytes 5088 (4.9 KiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 58 bytes 5088 (4.9 KiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
2、在linux中除了ifconfig这个命令可以配置IP地址之外还有一个命令就是ip了（本人用的是这种方法）。[root@bogon yum.repos.d]# ip addr l eno16777736 2: eno16777736: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 00:0c:29:2d:c1:30 brd ff:ff:ff:ff:ff:ff inet 192.168.1.131/24 brd 192.168.1.255 scope global eno16777736 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fe2d:c130/64 scope link valid_lft forever preferred_lft forever [root@bogon yum.repos.d]# ip addr add 192.168.1.131/24 dev eno16777736
ip这个命令和博大精深不是一两句话就可以说明的，在以后网络学习的时候我会给大家进行详细认真的讲解，再给大家提一下关于网卡，在CentOS7以后默认的网卡类型标识符为eno16777736，在以前的系统为ethN。
梦想，并不奢侈，只要勇敢地迈出第一步。
