How to configure static IP addresses in CentOS 7

How to configure static IP addresses in CentOS 7

When I was a beginner in Linux, I encountered a problem, that is, configuring the IP address of the NIC. The collection of relevant information was successfully configured. This is now recorded for convenience of memory.
Use the CD command to jump to the corresponding configuration file. The configuration command is cd/etc/sysconfig/network-scripts/

[root@localhost ~]# cd /etc/sysconfig/network-scripts/

If you do not know the file, use the ls command to view it.

[root@localhost network-scripts]# ls ifcfg-eno16777736  ifdown-ib    ifdown-ppp       ifdown-tunnel  ifup-ib    ifup-plusb   ifup-Team         network-functionsifcfg-lo           ifdown-ippp  ifdown-routes    ifup           ifup-ippp  ifup-post    ifup-TeamPort     network-functions-ipv6ifdown             ifdown-ipv6  ifdown-sit       ifup-aliases   ifup-ipv6  ifup-ppp     ifup-tunnelifdown-bnep        ifdown-isdn  ifdown-Team      ifup-bnep      ifup-isdn  ifup-routes  ifup-wirelessifdown-eth         ifdown-post  ifdown-TeamPort  ifup-eth       ifup-plip  ifup-sit     init.ipv6-global

The first ifcfg-enoxxxxxxxx (here x indicates a number) is the configuration file, which can be used in the vi editor. Press I to enter the editing mode and modify the file.

[root@localhost network-scripts]# vi ifcfg-eno16777736 TYPE="Ethernet"BOOTPROTO="static"DEFROUTE="yes"PEERDNS="yes"PEERROUTES="yes"IPV4_FAILURE_FATAL="no"IPV6INIT="yes"IPV6_AUTOCONF="yes"IPV6_DEFROUTE="yes"IPV6_PEERDNS="yes"IPV6_PEERROUTES="yes"IPV6_FAILURE_FATAL="no"NAME="eno16777736"UUID="718afcbf-931e-4c0c-a23f-bfc3c13023c2"DEVICE="eno16777736"ONBOOT="yes"IPADDR0="xxx.xxx.xxx.xxx"NETMASK="xxx.xxx.xxx.xxx"GATEWAY="xxx.xxx.xxx.xxx"

After editing, enter: wq! Save and exit, and then enter

/etc/init.d/network restart

The static IP Address Configuration is successfully saved and takes effect.