环境
CentOS Linux release 7.5.1804
Q
新安装CentOS后，为了方便远程ssh，想设置静态IP，但是在/etc/sysconfig/network-scripts/下面只有ifcfg-lo这张Local Loopback网卡的配置文件，并没有我们想要的enp0s3(不同机器的网卡名不一样，也可能是ens33或其它名字)网卡配置文件，想要配置静态IP根本无从下手。
[root@localhost ~]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# ls
ifcfg-lo ifdown-post ifup ifup-plip ifup-TeamPort
ifdown ifdown-ppp ifup-aliases ifup-plusb ifup-tunnel
ifdown-bnep ifdown-routes ifup-bnep ifup-post ifup-wireless
ifdown-eth ifdown-sit ifup-eth ifup-ppp init.ipv6-global
ifdown-ippp ifdown-Team ifup-ippp ifup-routes network-functions
ifdown-ipv6 ifdown-TeamPort ifup-ipv6 ifup-sit network-functions-ipv6
ifdown-isdn ifdown-tunnel ifup-isdn ifup-Team
A
- 使用
nmcli con show查看网卡的UUID
[root@localhost network-scripts]# nmcli con show
NAME UUID TYPE DEVICE
enp0s3 ad633ea8-e358-255e-a167-6c14742b347d ethernet enp0s3
- 在
/etc/sysconfig/network-scripts/目录下新建ifcfg-enp0s3(网卡名改成自己机器上的网卡名)
vim ifcfg-enp0s3 # 文件名改为自己的网卡名
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
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=enp0s3 # 改为自己的网卡名
UUID=ad633ea8-e358-255e-a167-6c14742b347d # 改为自己的UUID
DEVICE=enp0s3 # 改为自己的网卡名
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.0.222 # 改为自己想要的IP，前三段保持和原来的IP一致
NETMASK=255.255.255.0
GATEWAY=192.168.0.1 # 一般为x.x.x.1，具体可在物理机上使用ipconfig命令查看
DNS1=114.114.114.114
DNS2=114.114.115.115
- 配置文件保存后重启网络服务
systemctl restart network
- 查看网络信息
[root@localhost network-scripts]# ifconfig
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.0.222 netmask 255.255.255.0 broadcast 192.168.0.255
inet6 de12::f1a4:3694:6189:d250 prefixlen 64 scopeid 0x20<link>
ether 05:01:24:0a:54:15 txqueuelen 1000 (Ethernet)
RX packets 221235 bytes 325157863 (310.0 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 129166 bytes 10537641 (10.0 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 40 bytes 3528 (3.4 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 40 bytes 3528 (3.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
- 惯例，调戏下百度
[root@localhost network-scripts]# ping www.baidu.com
PING www.a.shifen.com (115.239.211.112) 56(84) bytes of data.
64 bytes from 115.239.211.112 (115.239.211.112): icmp_seq=1 ttl=54 time=12.0 ms
64 bytes from 115.239.211.112 (115.239.211.112): icmp_seq=2 ttl=54 time=11.9 ms
- 搞定
