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  • Centos7 设置静态IP地址

    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-lo ifdown-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

    image

    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 

    image

    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

    image

    原ip地址登录不了了

    image

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

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  • 原文地址:https://www.cnblogs.com/ios9/p/Centos7_staticIp_update.html
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