CentOS7静态IP配置

首先通过命令查看网络配置

找到需要修改的活动网络接口，这里我的是enp0s8

[root@local ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> 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: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:82:71:69 brd ff:ff:ff:ff:ff:ff
    inet 10.0.2.15/24 brd 10.0.2.255 scope global noprefixroute dynamic enp0s3
       valid_lft 86381sec preferred_lft 86381sec
    inet6 fe80::dff4:44b9:2f96:ca22/64 scope link noprefixroute
       valid_lft forever preferred_lft forever
3: enp0s8: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 08:00:27:d3:0f:bc brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.118/24 brd 192.168.1.255 scope global noprefixroute enp0s8
       valid_lft forever preferred_lft forever
    inet6 fe80::cc9a:c437:82b5:3157/64 scope link noprefixroute
       valid_lft forever preferred_lft forever

找到对应的配置文件

[root@local ~]# vim /etc/sysconfig/network-scripts/ifcfg-enp0s8

TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="static"	# 静态IP 由dhcp改为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="enp0s8"
UUID="09540589-657f-3a06-9a1f-ab051dd8549a"
DEVICE="enp0s8"
ONBOOT="yes"
IPADDR=192.168.1.118	# 设置固定IP
NETMASK=255.255.255.0	# 子网掩码
GATEWAY=192.168.1.1		# 网关

注意：可能你的 network-scripts 下没有 ifcfg-enp0s8 配置文件

解决办法：复制 ifcfg-enp0s3 配置文件重新命名为 ifcfg-enp0s8 即可

[root@local ~]# cd /etc/sysconfig/network-scripts
[root@local ~]# cp ifcfg-enp0s3 ifcfg-enp0s8

查看网卡 UUID 命令

[root@local ~]# nmcli con show

最后重启网络服务

[root@local ~]# systemctl restart network

最后 ping 下百度，检查网络是否正常

修改DNS，此步骤可选，按实际情况进行配置

修改 resolv.conf，增加如下配置

[root@local ~]# vim /etc/resolv.conf

# Generated by NetworkManager
nameserver 192.168.1.11
nameserver 114.114.114.114

保存即可，无需重启服务