Rhcsa12

Homework today :
20211124
1. Inquire about ip In several ways ： ip, ifconfig, nmcli,nmtui

 

2.nmcli Command to use ：
  a. stay ens160 New connection on network card static_con, And configure static ip

  b. stay ens160 New connection on network card auto_con, Configuration dynamics ip

[[email protected] ~]# nmcli c add type ethernet con-name auto_con ifname ens160  ipv4.dns 8.8.8.8 ipv4.method auto 
[[email protected] ~]# nmcli c add type ethernet con-name static_con ifname ens160 ipv4.addresses 192.168.116.100/24 ipv4.gateway 192.168.116.2 ipv4.dns 8.8.8.8 ipv4.method manual 

 

  c. modify static_con Of ip The way : nmtui,nmcli c modify, nmcli c edit, Modify the configuration file

 nmcli c modify

[[email protected] ~]# nmcli c modify static_con ipv4.addresses '192.168.116.101/24'

nmcli c edit（ Interactive mode ）

[[email protected] ~]# nmcli c edit
 Enter connection type ： ethernet 
nmcli> goto ipv4.addresses 
nmcli ipv4.addresses> change
 edit  "addresses"  value ： 192.168.116.200/24
back
nmcli ipv4> save
quit

[[email protected] ~]# cat /etc/sysconfig/network-scripts/ifcfg-static_con 

 

d. Activate static_con The way ： up, reapply, reload, load

[[email protected] ~]# nmcli c reload 
[[email protected] ~]# nmcli d reapply ens160 
[[email protected] ~]# nmcli c load static_con
[[email protected] ~]# nmcli c up static_con

  e. Delete auto_con

  f. Add a network card , And check the device status ,  h: If it is connected, disconnect

h: If it is connected, disconnect
  i: Set the disconnected network card status to connected