作业一：临时配置网络（ip，网关，dns）+永久配置
- 配置网络信息
[root@localhost ~]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.202.131 netmask 255.255.255.0 broadcast 192.168.202.255
inet6 fe80::20c:29ff:fe9d:a0df prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:9d:a0:df txqueuelen 1000 (Ethernet)
RX packets 23620 bytes 2085149 (1.9 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12933 bytes 1815875 (1.7 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 0 (Local Loopback)
RX packets 2767 bytes 389871 (380.7 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2767 bytes 389871 (380.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
[root@localhost ~]# ifconfig eno16777736 192.168.202.132/24
Connection closed by foreign host.
[root@localhost network-scripts]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.202.132 netmask 255.255.255.0 broadcast 192.168.202.255
inet6 fe80::20c:29ff:fe9d:a0df prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:9d:a0:df txqueuelen 1000 (Ethernet)
RX packets 23954 bytes 2108353 (2.0 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 13040 bytes 1827860 (1.7 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 0 (Local Loopback)
RX packets 2767 bytes 389871 (380.7 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2767 bytes 389871 (380.7 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
- 配置网关
[root@localhost network-scripts]# vim /etc/resolv.conf
[root@localhost network-scripts]# route add default gw 192.168.202.2 netmask 255.255.255.0
[root@localhost /]# route -n
[root@localhost /]# route del default gw 192.168.202.2 netmask 255.255.255.0
[root@localhost /]# route -n
3.永久配置
[root@localhost /]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# ls
[root@localhost network-scripts]# vim ifcfg-eno16777736