作业一：临时配置网络（ip，网关，dns）+永久配置

  1. 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

  1. 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

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