CentOS 7.x configure a static IP and enable

centos 7.x configure a static IP and enable

The origin of the problem 0

By querying the machine's IP, we found that the machine was not effective IP:

[pan@localhost ~]$ ip addr

So, we need to set a static IP of the machine, and enable the configuration.

How do we achieve this aim?

1 which file to modify the

Step by step we return to the query the local IP, and the results returned can learn a closer look:

Native network device name --ens33.

So we try to find the file with "ens33" in the system:

[pan@localhost ~]$ sudo find / -name *ens33* 

We look carefully return the results, with particular attention to the results of the line in the / etc directory (the files in the / etc directory is a system configuration files):

……

/etc/sysconfig/network-scripts/ifcfg-ens33

The last line is the path we want to modify the target file.

2 How to Modify

Before modifying the target file, as usual, we carefully look at the file permissions information, and then make changes:

[pan@localhost ~]$ ls -l /etc/sysconfig/network-scripts/ifcfg-ens33

Return result:

-rw-------. 1 root root 392 10月 10 15:36 /etc/sysconfig/network-scripts/ifcfg-ens33

Modify the target file:

[pan@localhost ~]$ sudo vi /etc/sysconfig/network-scripts/ifcfg-ens33  

These two lines modified as follows:

Original value :

BOOTPROTO=dhcp

ONBOOT=no

Modify the value :

BOOTPROTO=static

ONBOOT=yes

Increase follows the end:

IPADDR=192.168.219.149
GATEWAY=192.168.219.2
NETMASK=255.255.255.0
DNS1=192.168.219.146
DNS2=192.168.219.147

3 enable the configuration and verify network connectivity

After modifying the target file, we need to restart the system network services:

[pan@localhost ~]$ sudo systemctl restart network.service && ping -c 4 www.baidu.com

4 Conclusion

To tell the truth, the document also wrote accustomed to.