Linux系统修改IP地址的方式（CentOS7）

Linux系统IP地址修改的方式（CentOS7发行版本）

1.直接修改配置文件

[root@localhost ~]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# ls
ifcfg-ens33  ifdown-ippp  ifdown-routes    ifup          ifup-ipv6   ifup-ppp       ifup-tunnel
ifcfg-lo     ifdown-ipv6  ifdown-sit       ifup-aliases  ifup-isdn   ifup-routes    ifup-wireless
ifdown       ifdown-isdn  ifdown-Team      ifup-bnep     ifup-plip   ifup-sit       init.ipv6-global
ifdown-bnep  ifdown-post  ifdown-TeamPort  ifup-eth      ifup-plusb  ifup-Team      network-functions
ifdown-eth   ifdown-ppp   ifdown-tunnel    ifup-ippp     ifup-post   ifup-TeamPort  network-functions-ipv6
[root@localhost network-scripts]# cat ifcfg-ens33 		//没有配置过的网卡配置文件
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=dhcp
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=39de7058-877b-4697-9845-7e2119d74394
DEVICE=ens33
ONBOOT=no[root@localhost network-scripts]# cat ifcfg-ens33 		//配置后的网卡配置文件，如无特殊要求保留以下必要参数即可
TYPE=Ethernet
BOOTPROTO=static			//获取IP地址的方式更改为手动or静态
NAME=ens33
DEVICE=ens33
ONBOOT=yes			//网络接口打开，改为yes
IPADDR=192.168.10.11		//定义规定IP
PREFIX=24				//定义规定子网掩码
GATEWAY=192.168.10.2		//定义规定网关
DNS1=114.114.114.114		//定义首选dns服务器
DNS2=8.8.8.8				//定义备选dns服务器
[root@localhost network-scripts]# service network restart		//重启网络服务
Restarting network (via systemctl):                        [  OK  ]
[root@localhost network-scripts]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000link/ether 00:0c:29:d6:06:2d brd ff:ff:ff:ff:ff:ffinet 192.168.10.11/24 brd 192.168.10.255 scope global noprefixroute ens33valid_lft forever preferred_lft foreverinet6 fe80::20c:29ff:fed6:62d/64 scope link valid_lft forever preferred_lft forever

2.nmcli

[root@localhost ~]# nmcli connection show
NAME   UUID                                  TYPE      DEVICE 
ens33  c96bc909-188e-ec64-3a96-6a90982b08ad  ethernet  ens33  
[root@localhost ~]# nmcli connection modify ens33 ipv4.addresses 192.168.10.11/24 ipv4.gateway 192.168.10.2 ipv4.dns 114.114.114.114 autoconnect yes
[root@localhost ~]# nmcli connection reload
[root@localhost ~]# nmcli connection up ens33
Connection successfully activated (D-Bus active path: /org/freedesktop/NetworkManager/ActiveConnection/5)
[root@localhost ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00inet 127.0.0.1/8 scope host lovalid_lft forever preferred_lft foreverinet6 ::1/128 scope host valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000link/ether 00:0c:29:d6:06:2d brd ff:ff:ff:ff:ff:ffinet 192.168.10.11/24 brd 192.168.10.255 scope global noprefixroute ens33valid_lft forever preferred_lft foreverinet6 fe80::20c:29ff:fed6:62d/64 scope link valid_lft forever preferred_lft forever

3.nmtui