【Linux】疑难杂症@CentOS7.5 配置固定IP

1、查看网卡名称

[root@centos ~]# ip addr

1: lo: mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33: mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:0c:29:55:7d:52 brd ff:ff:ff:ff:ff:ff
inet 192.168.18.212/24 brd 192.168.18.255 scope global noprefixroute ens33
valid_lft forever preferred_lft forever
inet6 fe80::cfb8:9c22:bff4:c2e3/64 scope link noprefixroute
valid_lft forever preferred_lft forever

2、编辑网卡配置文件

[root@centos ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33

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=“ens33”
UUID=“e408ab5d-6013-4f49-8e37-dfdb7202a25c”
DEVICE=“ens33”
ONBOOT=“yes”
IPV6_PRIVACY=“no”
IPADDR=192.168.18.212
NETMASK=255.255.255.0
GATEWAY=192.168.18.1
DNS1=192.168.1.2
DNS2=8.8.8.8

3、重启网络服务

[root@centos ~]# service network restart
Restarting network (via systemctl): [ OK ]

测试ping www.baidu.com 看通不通