一:  修改网卡配置文件(操作前先备份一下该文件),/etc/sysconfig/network-scripts/

具体操作如下:

1:进入修改目录

  1 [root@localhost ~]# clear   # 1: root 用户登录 并清理屏幕
  2 [root@localhost ~]# cd /etc/sysconfig/network-scripts/    #2:进入 设置ip 信息的  /etc/sysconfig/network-scripts/ 目录下 
  3 [root@localhost network-scripts]# ls        #3 查看该目录下的文件信息
  4 
ifcfg-ens33 ifdown-ipv6 ifdown-TeamPort ifup-ippp ifup-routes network-functions 5 ifcfg-loifdown-isdn ifdown-tunnel ifup-ipv6 ifup-sit network-functions-ipv6 6 ifdown ifdown-post ifup ifup-isdn ifup-Team 7 ifdown-bnep ifdown-ppp ifup-aliases ifup-plip ifup-TeamPort 8 ifdown-eth ifdown-routes ifup-bnep ifup-plusb ifup-tunnel 9 ifdown-ib ifdown-sit ifup-eth ifup-post ifup-wireless 10 ifdown-ippp ifdown-Team ifup-ib ifup-ppp init.ipv6-global 11

Centos7  设置静态IP地址_Centos7

2:查看 网卡 ifcfg-ens33  (网卡:每个机器的网卡名称都不相同)

  1 [root@localhost network-scripts]# cat ifcfg-ens33 
  2 TYPE="Ethernet"
  3 BOOTPROTO="dhcp"
  4 DEFROUTE="yes"
  5 PEERDNS="yes"
  6 PEERROUTES="yes"
  7 IPV4_FAILURE_FATAL="no"
  8 IPV6INIT="yes"
  9 IPV6_AUTOCONF="yes"
 10 IPV6_DEFROUTE="yes"
 11 IPV6_PEERDNS="yes"
 12 IPV6_PEERROUTES="yes"
 13 IPV6_FAILURE_FATAL="no"
 14 IPV6_ADDR_GEN_MODE="stable-privacy"
 15 NAME="ens33"
 16 UUID="59469ff2-89aa-4cb0-9304-bb1ca20c9db3"
 17 DEVICE="ens33"
 18 ONBOOT="yes"
 19 

3:备份 网卡 ifcfg-ens33   信息

  1 [root@localhost network-scripts]# cp ifcfg-ens33  ifcfg-ens33_bak_20170827
  2 

 

4:编辑 网卡网卡 ifcfg-ens33   信息

默认该文件中还有其他配置,可以都删除或注释。

  1 [root@localhost network-scripts]# vi  ifcfg-ens33 
  2 [root@localhost network-scripts]# cat ifcfg-ens33 
  3 TYPE="Ethernet"
  4 BOOTPROTO="static"
  5 IPADDR=192.168.1.21
  6 NETMASK=255.255.255.0
  7 NETWORK=192.168.1.1
  8 NAME="ens33"
  9 ME="ens33"
 10 ONBOOT="yes"
 11 DNS1=192.168.1.1
 12 
 13 
 14 #DEFROUTE="yes"
 15 #PEERDNS="yes"
 16 #PEERROUTES="yes"
 17 #IPV4_FAILURE_FATAL="no"
 18 #IPV6INIT="yes"
 19 #IPV6_AUTOCONF="yes"
 20 #IPV6_DEFROUTE="yes"
 21 #IPV6_PEERDNS="yes"
 22 #IPV6_PEERROUTES="yes"
 23 #IPV6_FAILURE_FATAL="no"
 24 #IPV6_ADDR_GEN_MODE="stable-privacy"
 25 #NAME="ens33"
 26 #UUID="59469ff2-89aa-4cb0-9304-bb1ca20c9db3"
 27 #DEVICE="ens33"
 28 #ONBOOT="yes"
 29 

 

二:修改网关配置文件,/etc/sysconfig/network 信息 ,如下:

1:切换目录,查看文件信息

  1 [root@localhost network-scripts]# cd ..
  2 [root@localhost sysconfig]# ls
  3 atd         cgred     ebtables-config  init              iptables-config  kernel          man-db      network-scripts  pluto       rdisc          rsyncd     saslauthd      svnserve        virtlogd
  4 authconfig  console   fcoe             ip6tables         iptables.rpmnew  ksm             modules     nfs              qemu-ga     readonly-root  rsyslog    selinux        sysstat         wpa_supplicant
  5 autofs      cpupower  firewalld        ip6tables-config  irqbalance       libvirtd        netconsole  ntpd             radvd       rpcbind        run-parts  smartmontools  sysstat.ioconf
  6 cbq         crond     grub             iptables          kdump            libvirt-guests  network     ntpdate          raid-check  rpc-rquotad    samba      sshd           virtlockd
  7 [root@localhost sysconfig]# pwd
  8 /etc/sysconfig
  9 [root@localhost sysconfig]# cat network
 10 # Created by anaconda
 11 

Centos7  设置静态IP地址_Centos7 _02

2:修改 network 文件信息

  1 [root@localhost sysconfig]# vi  network
  2 [root@localhost sysconfig]# cat network
  3 # Created by anaconda
  4 
  5 NETWORKING=yes
  6 NETWORKING_IPV6=no
  7 HOSTNAME=localhost.localdomain
  8 GATEWAY=192.168.1.1
  9 
 10 

 

3:重启服务:

  1 [root@localhost sysconfig]# systemctl restart network
  2 

 

测试:

服务重启之后的ip信息

Centos7  设置静态IP地址_Centos7 _03

原ip地址登录不了了

Centos7  设置静态IP地址_Centos7 _04

 

注:本文参考了cnblogs:oslivan的《Centos7下面配置静态IP》文章