Centos7如何添加ip地址和网关

本篇内容介绍了"Centos7如何添加ip地址和网关"的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！

1.查看os版本

1. [root@oracle network-scripts]# cat /etc/redhat-release
   

2. CentOS Linux release 7.2.1511 (Core)

2.查看链接的是哪个网口，很多时候服务器上不只一个网口，本例就有4个，需要判断出目前网线插上的是哪个网口，本例是em1处于链接状态，那么配置ip的时候就配置这个em1

1. [root@oracle network-scripts]# nmcli dev status
   

2. DEVICE TYPE STATE CONNECTION
   

3. em2 ethernet unavailable --
   

4. p1p1 ethernet unavailable --
   

5. p1p2 ethernet unavailable --
   

6. em1 ethernet connected --
   

7. lo loopback unmanaged --

3.修改文件，红色是添加和修改的，BOOTPROTO=dhcp，从dhcp以后从改为static,

NM_CONTROLLED=no 表示该口将通过该配置文件进行设置，
ONBOOT=yes的意思是这个网卡开机自动启动。

vi /etc/sysconfig/network-scripts/ifcfg-em1

1. TYPE=Ethernet
   

2. BOOTPROTO=static
   

3. IPADDR=172.24.80.236
   

4. NETMASK=255.255.255.0
   

5. GATEWAY=172.24.80.1
   

6. NM_CONTROLLED=no
   

7. DEFROUTE=yes
   

8. PEERDNS=yes
   

9. PEERROUTES=yes
   

10. IPV4_FAILURE_FATAL=no
    

11. IPV6INIT=yes
    

12. IPV6_AUTOCONF=yes
    

13. IPV6_DEFROUTE=yes
    

14. IPV6_PEERDNS=yes
    

15. IPV6_PEERROUTES=yes
    

16. IPV6_FAILURE_FATAL=no
    

17. NAME=em1
    

18. UUID=67ac8318-e715-4081-9ef7-781140c62cb1
    

19. DEVICE=em1
    

20. ONBOOT=yes

4.重启服务

1. systemctl restart network.service

5.验证接口是否配置正确

1. [root@oracle network-scripts]# ip add
   

2. 1: lo: mtu 65536 qdisc noqueue state UNKNOWN
   

3. link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
   

4. inet 127.0.0.1/8 scope host lo
   

5. valid_lft forever preferred_lft forever
   

6. inet6 ::1/128 scope host
   

7. valid_lft forever preferred_lft forever
   

8. 2: em1: mtu 1500 qdisc mq state UP qlen 1000
   

9. link/ether d0:94:66:3e:ae:d0 brd ff:ff:ff:ff:ff:ff
   

10. inet 172.24.80.236/24 brd 172.24.80.255 scope global em1
    

11. valid_lft forever preferred_lft forever
    

12. inet6 fe80::d294:66ff:fe3e:aed0/64 scope link
    

13. valid_lft forever preferred_lft forever
    

14. 3: em2: mtu 1500 qdisc mq state DOWN qlen 1000
    

15. link/ether d0:94:66:3e:ae:d1 brd ff:ff:ff:ff:ff:ff
    

16. 4: p1p1: mtu 1500 qdisc mq state DOWN qlen 1000
    

17. link/ether d0:94:66:3e:bf:03 brd ff:ff:ff:ff:ff:ff
    

18. 5: p1p2: mtu 1500 qdisc mq state DOWN qlen 1000
    

19. link/ether d0:94:66:3e:bf:04 brd ff:ff:ff:ff:ff:ff

6.查看网口状态

1. [root@oracle network-scripts]# nmcli dev status
   

2. DEVICE TYPE STATE CONNECTION
   

3. em2 ethernet unavailable --
   

4. p1p1 ethernet unavailable --
   

5. p1p2 ethernet unavailable --
   

6. em1 ethernet unmanaged --
   

7. lo loopback unmanaged --

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