linux ens33 静态ip,Linux修改网卡ens33为eth0以及centos7下修改动态IP为静态IP地址
在使用RHEL和Centos7，发现网卡名称变成了EnoX，挺不习惯。现更改回旧名称eth0看着顺眼。
1.备份/etc/sysconfig/grub文件
cp /etc/sysconfig/grub /etc/sysconfig/grub.bak
2.编辑/etc/sysconfig/grub文件
vim /etc/sysconfig/grub
在GRUB_CMDLINE_LINUX后的双引号内添加
net.ifnames=0 biosdevname=0
顺序无所谓，注意各参数间空格。
3.重建GRUB配置文件
grub2-mkconfig -o /boot/grub2/grub.cfg
4.备份网卡配置文件和更改网卡文件为eth0
cp /etc/sysconfig/network-scripts/ifcfg-ens33 /etc/sysconfig/network-scripts/ifcfg-ens33.bak
mv /etc/sysconfig/network-scripts/ifcfg-ens33 /etc/sysconfig/network-scripts/ifcfg-eth0
ens33可能和各位不一样，具体先ifconfig查看自己的ensx多少。
5.编辑/etc/sysconfig/network-scripts/ifcfg-eth0文件
vim /etc/sysconfig/network-scripts/ifcfg-eth0
把NAME和DEVICE由原来的ens33更改为eth0即可。
6.重启系统即可。
[[email protected] ~]# ip a
1: lo: mtu 65536 qdisc noqueue state UNKNOWN qlen 1
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 forever
2: eth0: mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:7b:4d:fb brd ff:ff:ff:ff:ff:ff
inet 192.168.24.148/24 brd 192.168.24.255 scope global dynamic eth0
valid_lft 1610sec preferred_lft 1610sec
inet6 fe80::f395:669a:c751:9e90/64 scope link
valid_lft forever preferred_lft forever
Linux下把动态Ip更改为静态Ip
我需要将ip修改为192.168.24.130
1.查看网关地址，我的是192.168.24.2
[[email protected] ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.24.2 0.0.0.0 UG 100 0 0 eth0
192.168.24.0 0.0.0.0 255.255.255.0 U 100 0 0 eth0
2.查看DNS, 我的是192.168.24.2
[[email protected] ~]# cat /etc/resolv.conf
# Generated by NetworkManager
search localdomain
nameserver 192.168.24.2
3.配置网卡信息，我的是 vi /etc/sysconfig/network-scripts/ifcfg-eth0
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="eth0"
UUID="e7b272e4-cf09-46cb-8f85-ab6c9c469979"
DEVICE="eth0"
ONBOOT="yes"
需要更改的属性：
BOOTPROTO=”dhcp” 修改成 BOOTPROTO=”static”
需要添加的属性：
IPADDR0=192.168.24.130 # ip地址
PREFIXO0=24 #设置子网掩码
GATEWAY0=192.168.24.2 #设置网关
DNS1=8.8.8.8 #设置主DNS
修改后为
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO="static"
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=eth0
UUID=e7b272e4-cf09-46cb-8f85-ab6c9c469979
DEVICE=eth0
ONBOOT=yes
PREFIXO0=24
DNS0=8.8.8.8
IPADDR=192.168.24.130
PREFIX=24
GATEWAY=192.168.24.2
重启网卡
[[email protected] ~]# service network restart
Restarting network (via systemctl): [ OK ]
验证：
ping www.baidu.com
[[email protected] ~]# ping www.baidu.com
PING www.a.shifen.com (119.75.216.20) 56(84) bytes of data.
查看ip
[[email protected] ~]# ifconfig eth0
eth0: flags=4163 mtu 1500
inet 192.168.24.130 netmask 255.255.255.0 broadcast 192.168.24.255
inet6 fe80::f395:669a:c751:9e90 prefixlen 64 scopeid 0x20
ether 00:0c:29:7b:4d:fb txqueuelen 1000 (Ethernet)
RX packets 3607 bytes 327107 (319.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2139 bytes 304955 (297.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
原文：http://blog.51cto.com/13858192/2167037