Linux修改网卡ens33为eth0以及centos7下修改动态IP为静态IP地址

Linux修改网卡ens33为eth0以及centos7下修改动态IP为静态IP地址
修改网卡ens33为eth0

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.bakmv /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 a1: lo: <LOOPBACK,UP,LOWER_UP> 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 forever2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> 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 -nKernel IP routing tableDestination     Gateway         Genmask         Flags Metric Ref    Use Iface0.0.0.0         192.168.24.2    0.0.0.0         UG    100    0        0 eth0192.168.24.0    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 NetworkManagersearch localdomainnameserver 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=EthernetPROXY_METHOD=noneBROWSER_ONLY=noBOOTPROTO="static"DEFROUTE=yesIPV4_FAILURE_FATAL=noIPV6INIT=yesIPV6_AUTOCONF=yesIPV6_DEFROUTE=yesIPV6_FAILURE_FATAL=noIPV6_ADDR_GEN_MODE=stable-privacyNAME=eth0UUID=e7b272e4-cf09-46cb-8f85-ab6c9c469979DEVICE=eth0ONBOOT=yesPREFIXO0=24DNS0=8.8.8.8IPADDR=192.168.24.130PREFIX=24GATEWAY=192.168.24.2

重启网卡

[[email protected] ~]# service network restartRestarting network (via systemctl):                        [  OK  ]

验证:

ping www.baidu.com

[[email protected] ~]# ping www.baidu.comPING www.a.shifen.com (119.75.216.20) 56(84) bytes of data.

查看ip

[[email protected] ~]# ifconfig eth0eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  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<link>        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

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