VMware安装centos7.2后配置网络并设置固定ip-白红宇

VMware安装centos7.2后配置网络并设置固定ip

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发布时间：2019-05-01

本文共 5128 字，大约阅读时间需要 17 分钟。

开始接触centos7，目前公司用的还是centos6.8，不过最近要接触docker，docker需要centos的内核是3.10以上，而且看到centos7也开始普及，就也试着学习接触centos7吧。感觉区别还是挺明显的。安装后第一步应该就是配置上网吧。

查看本机ip（非必须）

1、按照习惯先看下本机ip，熟悉的命令是ifconfig，但会如下：

[root@localhost ~]# ifconfig-bash: /usr/sbin/ifconfig: 没有那个文件或目录[root@localhost ~]#

2、说明centos没有默认的ifconfig这个命令了，查了下可以使用ip addr，如下：

[root@localhost ~]# ip addr1: lo: 
   
     mtu 65536 qdisc noqueue state UNKNOWN     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00    inet 127.0.0.1/8 scope host lo       valid_lft forever preferred_lft forever    inet6 ::1/128 scope host        valid_lft forever preferred_lft forever2: eno16777736: 
    
      mtu 1500 qdisc pfifo_fast state UP qlen 1000    link/ether 00:0c:29:02:0e:ce brd ff:ff:ff:ff:ff:ff    inet 192.168.2.4/24 brd 192.168.2.255 scope global eno16777736       valid_lft forever preferred_lft forever    inet6 fe80::20c:29ff:fe02:ece/64 scope link        valid_lft forever preferred_lft forever

配置网络并设置固定ip

1、这个时候是没有网的，想yum安装各种命令组件是不行的，所以要先配置网络,还是熟悉的老地方：

[root@localhost ~]# ls /etc/sysconfig/network-scripts/ ifcfg-eno16777736  ifdown-eth   ifdown-post    ifdown-tunnel  ifup-eth   ifup-plip   ifup-routes    init.ipv6-globalifcfg-lo           ifdown-ippp  ifdown-ppp     ifup           ifup-ippp  ifup-plusb  ifup-sit       network-functionsifdown             ifdown-ipv6  ifdown-routes  ifup-aliases   ifup-ipv6  ifup-post   ifup-tunnel    network-functions-ipv6ifdown-bnep        ifdown-isdn  ifdown-sit     ifup-bnep      ifup-isdn  ifup-ppp    ifup-wireless

没有了centos的ifcfg-eth0，对应的是ifcfg-eno16777736，修改如下

vim /etc/sysconfig/network-scripts/ifcfg-eno16777736 TYPE=EthernetBOOTPROTO=staticDEFROUTE=yesPEERDNS=yesPEERROUTES=yesIPV4_FAILURE_FATAL=noIPV6INIT=yesIPV6_AUTOCONF=yesIPV6_DEFROUTE=yesIPV6_PEERDNS=yesIPV6_PEERROUTES=yesIPV6_FAILURE_FATAL=noNAME=eno16777736UUID=892fa522-eee6-4894-bb78-fa4b5066da54DEVICE=eno16777736ONBOOT=yesIPADDR=192.168.2.4GATEWAY=192.168.2.1DNS=119.29.29.29DNS1=114.114.114.114

注意：IPADDR,GATEWAY需要和你的宿主机的ip段一致，用的是桥接模式

2、保存并重启网络

[root@localhost ~]# service network restartRestarting network (via systemctl):                        [  OK  ][root@localhost ~]#

测试网络

1、通过ping 百度的方式看网络是否通，域名解析是否可用，如下：

[root@localhost ~]# ping www.baidu.comPING www.a.shifen.com (14.215.177.38) 56(84) bytes of data.64 bytes from 14.215.177.38: icmp_seq=1 ttl=55 time=10.5 ms64 bytes from 14.215.177.38: icmp_seq=2 ttl=55 time=15.7 ms64 bytes from 14.215.177.38: icmp_seq=3 ttl=55 time=14.5 ms^C--- www.a.shifen.com ping statistics ---3 packets transmitted, 3 received, 0% packet loss, time 2003msrtt min/avg/max/mdev = 10.534/13.601/15.765/2.228 ms[root@localhost ~]#

安装ifconfig命令

1、不是yum -y install ifconfig 噢, 是 yum -y install net-tools.x86_64

[root@localhost ~]# ifconfig-bash: /usr/sbin/ifconfig: 没有那个文件或目录[root@localhost ~]# yum -y install net-tools.x86_64已加载插件：fastestmirrorbase                                                                                                                                  | 3.6 kB  00:00:00     docker-ce-stable                                                                                                                      | 3.5 kB  00:00:00     extras                                                                                                                                | 2.9 kB  00:00:00     updates                                                                                                                               | 2.9 kB  00:00:00     Loading mirror speeds from cached hostfile * base: mirrors.ustc.edu.cn * extras: mirrors.njupt.edu.cn * updates: mirrors.njupt.edu.cn正在解决依赖关系--> 正在检查事务---> 软件包 net-tools.x86_64.0.2.0-0.25.20131004git.el7 将被 安装--> 解决依赖关系完成依赖关系解决...

查看本机ip

1、这下可以使用ifconfig查看本机ip了，可以看到ip是上面配置的192.168.2.4

[root@localhost ~]# ifconfigdocker0: flags=4163
   
      mtu 1500        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255        inet6 fe80::42:c9ff:fefc:c2af  prefixlen 64  scopeid 0x20
            ether 02:42:c9:fc:c2:af  txqueuelen 0  (Ethernet)        RX packets 0  bytes 0 (0.0 B)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 10  bytes 732 (732.0 B)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0eno16777736: flags=4163
    
       mtu 1500        inet 192.168.2.4  netmask 255.255.255.0  broadcast 192.168.2.255        inet6 fe80::20c:29ff:fe02:ece  prefixlen 64  scopeid 0x20
             ether 00:0c:29:02:0e:ce  txqueuelen 1000  (Ethernet)        RX packets 1521  bytes 456967 (446.2 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 881  bytes 136743 (133.5 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0lo: flags=73
     
        mtu 65536        inet 127.0.0.1  netmask 255.0.0.0        inet6 ::1  prefixlen 128  scopeid 0x10
      
               loop  txqueuelen 0  (Local Loopback)        RX packets 16  bytes 1344 (1.3 KiB)        RX errors 0  dropped 0  overruns 0  frame 0        TX packets 16  bytes 1344 (1.3 KiB)        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0