CentOS 7中网络设置图文详解

查看CentOS 7网络接口信息

查看所有活动网络接口的信息

ifconfig命令

[root@localhost ~]# ifconfig //查看网络接口信息

ens33: flags=4163 mtu 1500

inet 192.168.144.133 netmask 255.255.255.0 broadcast 192.168.144.255

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 6139 bytes 3599390 (3.4 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 2483 bytes 330519 (322.7 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73 mtu 65536

inet 127.0.0.1 netmask 255.0.0.0

inet6 ::1 prefixlen 128 scopeid 0x10

loop txqueuelen 1 (Local Loopback)

RX packets 84 bytes 7500 (7.3 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 84 bytes 7500 (7.3 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

virbr0: flags=4099 mtu 1500

inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255

ether 52:54:00:d9:de:d2 txqueuelen 1000 (Ethernet)

RX packets 0 bytes 0 (0.0 B)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 0 bytes 0 (0.0 B)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

查看指定网络接口信息

ifconfig 网络接口

[root@localhost ~]# ifconfig ens33 //查看ens33网络接口信息

ens33: flags=4163 mtu 1500

inet 192.168.144.133 netmask 255.255.255.0 broadcast 192.168.144.255

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 6183 bytes 3602858 (3.4 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 2505 bytes 334073 (326.2 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

查看主机名称

查看或设置当前主机名

hostname命令

[root@localhost ~]# hostname //查看主机名称

localhost.localdomain

更改主机名称

hostnamectl set-hostname [主机名称]

[root@localhost ~]# hostnamectl set-hostname http01 //更改主机名

[root@localhost ~]# su //切换用户，刷新主机名

[root@http01 ~]# hostname //查看主机名称

http01

查看路由表条目

查看路由表

route命令

[root@http01 ~]# route //查看路由表

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

default gateway 0.0.0.0 UG 100 0 0 ens33

192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0

192.168.144.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33

查看网络连接情况

查看系统的网络连接状态、路由表、接口统计等信息

netstat命令

netstat [选项]

常用选项

-a :全部

-n：数字格式显示

-p：协议

-t ：tcp

-u ：udp

-r：路由

[root@http01 ~]# netstat -antp //查看以数字格式显示全部TCP协议端口的网络连接情况

Active Internet connections (servers and established)

Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name

tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 1/systemd

tcp 0 0 192.168.122.1:53 0.0.0.0:* LISTEN 1308/dnsmasq

tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 983/sshd

tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN 985/cupsd

tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN 1292/master

tcp 0 0 127.0.0.1:6010 0.0.0.0:* LISTEN 4840/sshd: root@pts

tcp 0 0 192.168.144.133:22 192.168.144.1:54734 ESTABLISHED 4840/sshd: root@pts

tcp6 0 0 :::111 :::* LISTEN 1/systemd

tcp6 0 0 :::80 :::* LISTEN 2373/httpd

tcp6 0 0 :::22 :::* LISTEN 983/sshd

tcp6 0 0 ::1:631 :::* LISTEN 985/cupsd

tcp6 0 0 ::1:25 :::* LISTEN 1292/master

tcp6 0 0 ::1:6010 :::* LISTEN 4840/sshd: root@pts

[root@http01 ~]# netstat -nuap //查看以数字格式显示全部UDP协议端口的网络连接情况

Active Internet connections (servers and established)

Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name

udp 0 0 0.0.0.0:36571 0.0.0.0:* 788/dhclient

udp 0 0 0.0.0.0:47956 0.0.0.0:* 578/avahi-daemon: r

udp 0 0 192.168.122.1:53 0.0.0.0:* 1308/dnsmasq

udp 0 0 0.0.0.0:67 0.0.0.0:* 1308/dnsmasq

udp 0 0 0.0.0.0:68 0.0.0.0:* 788/dhclient

udp 0 0 0.0.0.0:5353 0.0.0.0:* 578/avahi-daemon: r

udp 0 0 127.0.0.1:323 0.0.0.0:* 636/chronyd

udp6 0 0 :::57996 :::* 788/dhclient

udp6 0 0 ::1:323 :::* 636/chronyd

[root@http01 ~]# netstat -r //查看路由信息，与route命令作用相同

Kernel IP routing table

Destination Gateway Genmask Flags MSS Window irtt Iface

default gateway 0.0.0.0 UG 0 0 0 ens33

192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0

192.168.144.0 0.0.0.0 255.255.255.0 U 0 0 0 ens33

网络测试连接

测试网络通讯性

ping命令

ping [主机名]/[IP地址]

[root@http01 ~]# ping 192.168.100.10 //测试网络通讯

PING 192.168.100.10 (192.168.100.10) 56(84) bytes of data.

64 bytes from 192.168.100.10: icmp_seq=1 ttl=128 time=0.860 ms

64 bytes from 192.168.100.10: icmp_seq=2 ttl=128 time=0.530 ms

64 bytes from 192.168.100.10: icmp_seq=3 ttl=128 time=0.514 ms

64 bytes from 192.168.100.10: icmp_seq=4 ttl=128 time=0.465 ms

跟踪数据包

测试从当前主机到目的主机之间经过的网络节点

traceroute命令

traceroute 目标主机地址

[root@http01 ~]# traceroute 192.168.100.10

traceroute to 192.168.100.10 (192.168.100.10), 30 hops max, 60 byte packets

1 gateway (192.168.144.2) 0.320 ms 0.255 ms 0.223 ms

2 * * *

3 * * *

4 * * *

域名解析

测试DNS域名解析

nslookup命令

nslookup [目标主机地址]/[目标DNS地址]

[root@http01 ~]# nslookup www.baidu.com

Server: 192.168.144.2

Address: 192.168.144.2#53

Non-authoritative answer:

www.baidu.com canonical name = www.a.shifen.com.

Name: www.a.shifen.com

Address: 183.232.231.172

Name: www.a.shifen.com

Address: 183.232.231.174

设置网络参数的方式

临时配置——使用命令调整网络参数

简单、快速，可直接修改运行中的网络参数

一般只适合在调试网络的过程中使用

重新启动以后，所做的修改将会失效

固定设置——通过配置文件修改网络参数

修改各项网络参数的配置文件

适合对服务器设置固定参数时使用

需要重载网络服务或者重启以后才会生效

设置网络接口的参数

临时设置网络接口的IP地址、子网掩码

ifconfig 接口名 IP地址 [netmask(子网掩码)]

[root@http01 ~]# ifconfig ens33 //查看ens33接口IP地址

ens33: flags=4163 mtu 1500

inet 192.168.144.133 netmask 255.255.255.0 broadcast 192.168.144.255

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 42 bytes 3966 (3.8 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 86 bytes 9346 (9.1 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

[root@http01 ~]# ifconfig ens33 192.168.144.138/24 //设置临时IP地址

[root@http01 ~]# ifconfig ens33 //查看是否成功设置

ens33: flags=4163 mtu 1500

inet 192.168.144.138 netmask 255.255.255.0 broadcast 192.168.144.255

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 2660 bytes 3613441 (3.4 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 844 bytes 57384 (56.0 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

[root@http01 ~]# systemctl restart network //重启网络服务

[root@http01 ~]# ifconfig ens33 //查看IP地址

ens33: flags=4163 mtu 1500

inet 192.168.144.133 netmask 255.255.255.0 broadcast 192.168.144.255

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet) //设置的IP地址失效

RX packets 2708 bytes 3618185 (3.4 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 894 bytes 63590 (62.0 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

设置固定网络接口的IP地址、子网掩码

设置固定的网络接口IP地址、子网掩码，需要在网络接口的配置文件中更改配置文件来完成。

网络接口配置文件

/etc/sysconfig/network-scripts/

重启network网络服务

systemctl restart network

[root@http01 ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33 //进入编辑网卡配置文件

TYPE=Ethernet

PROXY_METHOD=none

BROWSER_ONLY=no

BOOTPROTO=staticl //将DHCP更改为staticl

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=2ef6b862-5201-48c5-a450-23b3720ab3a0

DEVICE=ens33

ONBOOT=yes

IPADDR=192.168.144.138 //输入要设定的IP地址

NETMAS=255.255.255.0 //输入子网掩码

GATEWAY=192.168.144.1 //输入网关地址

[root@http01 ~]# systemctl restart network //重启网络服务

[root@http01 ~]# ifconfig ens33

ens33: flags=4163 mtu 1500

inet 192.168.144.138 netmask 255.255.255.0 broadcast 192.168.144.255

inet6 fe80::20c:29ff:fe5b:d3a0 prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet) //地址设置成功

RX packets 3832 bytes 3715216 (3.5 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 1558 bytes 160876 (157.1 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

禁用或者重新激活网卡

禁用网卡

ifconfig 网络接口 down

重新激活网卡

ifconfig 网络接口 up

[root@localhost ~]# ifconfig ens33 down //禁用网卡

[root@localhost ~]# ifconfig ens33 //查看网卡信息，无IP地址连接

ens33: flags=4098 mtu 1500

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 459 bytes 495831 (484.2 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 240 bytes 22865 (22.3 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

[root@localhost ~]# ifconfig ens33 up //重新激活网卡

[root@localhost ~]# ifconfig ens33 //查看网卡信息，成功获取IP地址

ens33: flags=4163 mtu 1500

inet 192.168.144.133 netmask 255.255.255.0 broadcast 192.168.144.255

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 463 bytes 496409 (484.7 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 264 bytes 26630 (26.0 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

虚拟网络接口

虚拟网络接口是指共用一个网卡，同一网卡可以配多个IP地址，不管访问哪一个IP地址都能访问同一服务器。（当不想用虚拟网卡时直接禁用虚拟网卡即可）

ifconfig 接口名：序号 IP地址

[root@localhost ~]# ifconfig ens33:0 192.168.144.140 //在ens33网卡上添加虚拟网卡，序列号为0

[root@localhost ~]# ifconfig //查看网卡信息

ens33: flags=4163 mtu 1500

inet 192.168.144.133 netmask 255.255.255.0 broadcast 192.168.144.255

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 653 bytes 512686 (500.6 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 373 bytes 39897 (38.9 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ens33:0: flags=4163 mtu 1500 //创建的虚拟网卡

inet 192.168.144.140 netmask 255.255.255.0 broadcast 192.168.144.255

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

lo: flags=73 mtu 65536

inet 127.0.0.1 netmask 255.0.0.0

inet6 ::1 prefixlen 128 scopeid 0x10

loop txqueuelen 1 (Local Loopback)

...//省略部分内容...

设置路由记录

添加到指定网段的路由记录

route add -net 网段地址 gw IP地址（网关）

删除到指定网段的路由记录

route del -net 网段地址

删除路由表中默认网关记录

route del default gw IP地址

向路由表中添加默认网关记录

route add default gw IP地址

[root@localhost ~]# route //查看路由表

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

default gateway 0.0.0.0 UG 100 0 0 ens33

192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0

192.168.144.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33

[root@localhost ~]# route add -net 192.168.100.0/24 gw 192.168.144.1 //添加网段

[root@localhost ~]# route //查看路由表是否添加网段

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

default gateway 0.0.0.0 UG 100 0 0 ens33

192.168.100.0 192.168.144.1 255.255.255.0 UG 0 0 0 ens33

192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0

192.168.144.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33

[root@localhost ~]# route del -net 192.168.100.0/24 //删除添加的网段

[root@localhost ~]# route //查看路由表，看添加的网段是否删除

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

default gateway 0.0.0.0 UG 100 0 0 ens33

192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0

192.168.144.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33

[root@localhost ~]# route add default gw 192.168.144.1 //添加默认网关

[root@localhost ~]# route //查看是否成功添加默认网关

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

default gateway 0.0.0.0 UG 0 0 0 ens33

default gateway 0.0.0.0 UG 100 0 0 ens33

192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0

192.168.144.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33

[root@localhost ~]# route del default gw 192.168.144.1 //删除添加的默认网关

[root@localhost ~]# route //查看路由表是否成功删除

Kernel IP routing table

Destination Gateway Genmask Flags Metric Ref Use Iface

default gateway 0.0.0.0 UG 100 0 0 ens33

192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0

192.168.144.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33

主机名称配置文件

保存全局网络设置，主要包括主机名信息

/etc/sysconfig/network//etc/hostname

在CentOS 6中若要修改主机名可以执行“vim /etc/sysconfig/network”修改配置文件，而在CentOS 7中我们可以执行“vim /etc/hostname”就可以去修改主机名配置文件了。

[root@localhost ~]# vim /etc/hostname //进入编辑主机名配置文件

localhost.localdomain //当前主机名 如若修改可以直接在编辑器修改主机名

~

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域名解析配置文件

指定为本机体提供DNS解析的服务器地址（对改文件的修改将会立即生效）

/etc/resolv.conf

格式

nameserver IP地址

[root@localhost ~]# vim /etc/resolv.conf

# Generated by NetworkManage

search localdomain

nameserver 192.168.144.2

~

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本地主机映射文件

在本地主机映射文件中添加映射记录，当访问添加的记录网站时，将会直接向添加的映射记录IP地址发送web请求，省略了向DNS服务器解析IP地址的过程。

保存主机名与IP地址的映射记录

/etc/hosts

hosts文件和DNS服务器的比较

默认情况下，系统首先从hosts文件查找解析记录

hosts文件只对当前的主机有效

hosts文件可减少DNS查询过程，从而加快访问速度

补充内容：

双网卡的建立

在日常生产活动中难免会遇到需要建立双网卡的情况，这里我们来看看如何建立双网卡

1、首先在虚拟机Linux操作系统中添加一块物理网卡，然后查看网络接口信息，确定是否成功添加网络

[root@localhost ~]# ifconfig //查看网接口信息

ens33: flags=4163 mtu 1500

inet 192.168.144.133 netmask 255.255.255.0 broadcast 192.168.144.255

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 3415 bytes 740748 (723.3 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 1725 bytes 201799 (197.0 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ens36: flags=4163 mtu 1500 //新添加的物理网卡

inet 192.168.144.141 netmask 255.255.255.0 broadcast 192.168.144.255

inet6 fe80::deb1:3cec:3e26:5ec2 prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:aa txqueuelen 1000 (Ethernet)

RX packets 85 bytes 6069 (5.9 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 30 bytes 4667 (4.5 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

2、这个时候我们查看网卡配置文件目录，看是否有添加的网卡配置文件

[root@localhost ~]# cd /etc/sysconfig/network-scripts/ //进入网卡配置文件目录

[root@localhost network-scripts]# ls //查看，这个时候时没有新添加的网卡ens36的配置文件的

ifcfg-ens33 ifdown-ipv6 ifdown-TeamPort ifup-ippp ifup-routes network-functions

ifcfg-lo ifdown-isdn ifdown-tunnel ifup-ipv6 ifup-sit network-functions-ipv6

ifdown ifdown-post ifup ifup-isdn ifup-Team

ifdown-bnep ifdown-ppp ifup-aliases ifup-plip ifup-TeamPort

ifdown-eth ifdown-routes ifup-bnep ifup-plusb ifup-tunnel

ifdown-ib ifdown-sit ifup-eth ifup-post ifup-wireless

ifdown-ippp ifdown-Team ifup-ib ifup-ppp init.ipv6-global

3、因为没有ens36网卡的配置文件，我们就没有办法给ens36指定固定的地址的。下面我们就把ens36与ens33这两个网卡全部设为仅主机相连模式，然后再查看网络接口信息。

[root@localhost ~]# ifconfig //查看网络接口信息

ens33: flags=4163 mtu 1500 //无获取IP地址

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 3578 bytes 754392 (736.7 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 1812 bytes 215065 (210.0 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ens36: flags=4163 mtu 1500 //无发获取IP地址

inet6 fe80::deb1:3cec:3e26:5ec2 prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:aa txqueuelen 1000 (Ethernet)

RX packets 160 bytes 12321 (12.0 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 48 bytes 7865 (7.6 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

我在这里无法获取IP地址是因为的VMware虚拟机中DHCP服务关掉了，所以无法获取地址。

4、这个时候我们就给这两个物理网卡配固定地址

[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33 //编辑网卡信息

TYPE=Ethernet

PROXY_METHOD=none

BROWSER_ONLY=no

BOOTPROTO=static //dhcp更改为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=ens33

UUID=2ef6b862-5201-48c5-a450-23b3720ab3a0

DEVICE=ens33

ONBOOT=yes

IPADDR=192.168.100.10 //输入配置IP地址

NETMAS=255.255.255.0 //输入配置子网掩码

GATEWAY=192.168.100.0 //输入配置网关

~

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~

~

:wq

[root@localhost ~]# service network restart //重启网络服务

Restarting network (via systemctl): [ 确定 ]

[root@localhost ~]# ifconfig //查看网络接口信息，看配置的地址是否生效

ens33: flags=4163 mtu 1500

inet 192.168.100.10 netmask 255.255.255.0 broadcast 192.168.100.255

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 3642 bytes 771191 (753.1 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 1948 bytes 239617 (234.0 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

下面我们进入网卡配置文件目录，这时候时没有ens36网卡的配置文件的，我们就需要把ens33的配置文件直接复制，更改为ens36的配置文件，然后把配置文件的内容更改就可以了

[root@localhost ~]# cd /etc/sysconfig/network-scripts/ //进入网卡配置文件目录

[root@localhost network-scripts]# ls //查看

ifcfg-ens33 ifdown-isdn ifup ifup-plip ifup-tunnel

ifcfg-lo ifdown-post ifup-aliases ifup-plusb ifup-wireless

ifdown ifdown-ppp ifup-bnep ifup-post init.ipv6-global

ifdown-bnep ifdown-routes ifup-eth ifup-ppp network-functions

ifdown-eth ifdown-sit ifup-ib ifup-routes network-functions-ipv6

ifdown-ib ifdown-Team ifup-ippp ifup-sit

ifdown-ippp ifdown-TeamPort ifup-ipv6 ifup-Team

ifdown-ipv6 ifdown-tunnel ifup-isdn ifup-TeamPort

[root@localhost network-scripts]# cp -p ifcfg-ens33 ifcfg-ens36 //复制ens33配置文件

[root@localhost network-scripts]# ls //查看

ifcfg-ens33 ifdown-ipv6 ifdown-tunnel ifup-isdn ifup-TeamPort

ifcfg-ens36 ifdown-isdn ifup ifup-plip ifup-tunnel

ifcfg-lo ifdown-post ifup-aliases ifup-plusb ifup-wireless

ifdown ifdown-ppp ifup-bnep ifup-post init.ipv6-global

ifdown-bnep ifdown-routes ifup-eth ifup-ppp network-functions

ifdown-eth ifdown-sit ifup-ib ifup-routes network-functions-ipv6

ifdown-ib ifdown-Team ifup-ippp ifup-sit

ifdown-ippp ifdown-TeamPort ifup-ipv6 ifup-Team

[root@localhost network-scripts]# vim ifcfg-ens36 //进入编辑ens36配置文件

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=ens36 //更改33为36

DEVICE=ens36 //更改33为36

ONBOOT=yes

IPADDR=192.168.10.10 //更改IP地址网段

NETMAS=255.255.255.0

GATEWAY=192.168.10.0 //更改网关地址

~

~ 注意，配置文件里面的UUID条目要删掉，让系统自动识别添加就可以了（UUID不可相同 ）

~

~

~

~

~

~

:wq

[root@localhost network-scripts]# service network restart //重新启动网络服务

Restarting network (via systemctl): [ 确定 ]

[root@localhost network-scripts]# ifconfig //查看网卡信息

ens33: flags=4163 mtu 1500

inet 192.168.100.10 netmask 255.255.255.0 broadcast 192.168.100.255

inet6 fe80::a85a:c203:e2e:3f3c prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:a0 txqueuelen 1000 (Ethernet)

RX packets 3705 bytes 788818 (770.3 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 1978 bytes 243934 (238.2 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ens36: flags=4163 mtu 1500 //成功获取IP地址

inet 192.168.10.10 netmask 255.255.255.0 broadcast 192.168.10.255

inet6 fe80::f6eb:23e3:3afb:fef4 prefixlen 64 scopeid 0x20

ether 00:0c:29:5b:d3:aa txqueuelen 1000 (Ethernet)

RX packets 248 bytes 33751 (32.9 KiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 280 bytes 49781 (48.6 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0