CentOS 8中无法上网问题解决-无法正常显示ens33中ip地址

• ifconfig 查询 无法显示ens33的中 网卡ip地址

  ing: www.baidu.com: Name or service not known
  [hadoop100@localhost ~]$ ifconfig
  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 48  bytes 2400 (2.3 KiB)
          RX errors 0  dropped 0  overruns 0  frame 0
          TX packets 48  bytes 2400 (2.3 KiB)
          TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
  
  virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
          inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
          ether 52:54:00:ef:a6:7d  txqueuelen 1000  (Ethernet)
          RX packets 0  bytes 0 (0.0 B)
          RX errors 0  dropped 0  overruns 0  frame 0
          TX packets 0  bytes 0 (0.0 B)
          TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
  

• 解决办法：

  # 查看托管状态
  nmcli n
  # 出现disabled则代表是遇到的问题，否则代表不是
  # 开启托管
  nmcli n on
  # 重启托管
  systemctl restart NetworkManager
  # 再次查看，即可正常显示出ens33
  ifconfig