CentOS 7中网络设置
查看网络接口信息
- 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 0lo: 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 0virbr0: 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 tableDestination Gateway Genmask Flags Metric Ref Use Ifacedefault gateway 0.0.0.0 UG 100 0 0 ens33192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0192.168.144.0 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 tableDestination Gateway Genmask Flags MSS Window irtt Ifacedefault gateway 0.0.0.0 UG 0 0 0 ens33192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0192.168.144.0 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 ms64 bytes from 192.168.100.10: icmp_seq=2 ttl=128 time=0.530 ms64 bytes from 192.168.100.10: icmp_seq=3 ttl=128 time=0.514 ms64 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 192.168.100.10traceroute 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.comServer: 192.168.144.2Address: 192.168.144.2#53Non-authoritative answer:www.baidu.com canonical name = www.a.shifen.com.Name: www.a.shifen.comAddress: 183.232.231.172Name: www.a.shifen.comAddress: 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=EthernetPROXY_METHOD=noneBROWSER_ONLY=noBOOTPROTO=staticl //将DHCP更改为staticlDEFROUTE=yesIPV4_FAILURE_FATAL=noIPV6INIT=yesIPV6_AUTOCONF=yesIPV6_DEFROUTE=yesIPV6_FAILURE_FATAL=noIPV6_ADDR_GEN_MODE=stable-privacyNAME=ens33UUID=2ef6b862-5201-48c5-a450-23b3720ab3a0DEVICE=ens33ONBOOT=yesIPADDR=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 0ens33:0: 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 tableDestination Gateway Genmask Flags Metric Ref Use Ifacedefault gateway 0.0.0.0 UG 100 0 0 ens33192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0192.168.144.0 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 tableDestination Gateway Genmask Flags Metric Ref Use Ifacedefault gateway 0.0.0.0 UG 100 0 0 ens33192.168.100.0 192.168.144.1 255.255.255.0 UG 0 0 0 ens33192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0192.168.144.0 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 tableDestination Gateway Genmask Flags Metric Ref Use Ifacedefault gateway 0.0.0.0 UG 100 0 0 ens33192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0192.168.144.0 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 tableDestination Gateway Genmask Flags Metric Ref Use Ifacedefault gateway 0.0.0.0 UG 0 0 0 ens33default gateway 0.0.0.0 UG 100 0 0 ens33192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0192.168.144.0 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 Ifacedefault gateway 0.0.0.0 UG 100 0 0 ens33192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0192.168.144.0 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~ ~ ~ ~ ~ ~
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 NetworkManagersearch localdomainnameserver 192.168.144.2~ ~ ~ ~
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
- 默认情况下,系统首先从
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 0ens36: 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-functionsifcfg-lo ifdown-isdn ifdown-tunnel ifup-ipv6 ifup-sit network-functions-ipv6ifdown ifdown-post ifup ifup-isdn ifup-Teamifdown-bnep ifdown-ppp ifup-aliases ifup-plip ifup-TeamPortifdown-eth ifdown-routes ifup-bnep ifup-plusb ifup-tunnelifdown-ib ifdown-sit ifup-eth ifup-post ifup-wirelessifdown-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 0ens36: 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=EthernetPROXY_METHOD=noneBROWSER_ONLY=noBOOTPROTO=static //dhcp更改为staticDEFROUTE=yesIPV4_FAILURE_FATAL=noIPV6INIT=yesIPV6_AUTOCONF=yesIPV6_DEFROUTE=yesIPV6_FAILURE_FATAL=noIPV6_ADDR_GEN_MODE=stable-privacyNAME=ens33UUID=2ef6b862-5201-48c5-a450-23b3720ab3a0DEVICE=ens33ONBOOT=yesIPADDR=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~ ~ ~ ~ ~ ~ ~ :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-tunnelifcfg-lo ifdown-post ifup-aliases ifup-plusb ifup-wirelessifdown ifdown-ppp ifup-bnep ifup-post init.ipv6-globalifdown-bnep ifdown-routes ifup-eth ifup-ppp network-functionsifdown-eth ifdown-sit ifup-ib ifup-routes network-functions-ipv6ifdown-ib ifdown-Team ifup-ippp ifup-sitifdown-ippp ifdown-TeamPort ifup-ipv6 ifup-Teamifdown-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-TeamPortifcfg-ens36 ifdown-isdn ifup ifup-plip ifup-tunnelifcfg-lo ifdown-post ifup-aliases ifup-plusb ifup-wirelessifdown ifdown-ppp ifup-bnep ifup-post init.ipv6-globalifdown-bnep ifdown-routes ifup-eth ifup-ppp network-functionsifdown-eth ifdown-sit ifup-ib ifup-routes network-functions-ipv6ifdown-ib ifdown-Team ifup-ippp ifup-sitifdown-ippp ifdown-TeamPort ifup-ipv6 ifup-Team[root@localhost network-scripts]# vim ifcfg-ens36 //进入编辑ens36配置文件TYPE=EthernetPROXY_METHOD=noneBROWSER_ONLY=noBOOTPROTO=staticDEFROUTE=yesIPV4_FAILURE_FATAL=noIPV6INIT=yesIPV6_AUTOCONF=yesIPV6_DEFROUTE=yesIPV6_FAILURE_FATAL=noIPV6_ADDR_GEN_MODE=stable-privacyNAME=ens36 //更改33为36DEVICE=ens36 //更改33为36ONBOOT=yesIPADDR=192.168.10.10 //更改IP地址网段NETMAS=255.255.255.0GATEWAY=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 0ens36: 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