1.问题现象

虚拟机打开后，使用ifconfig查看IP信息，虚拟机默认的网卡名称是ens33，ifconfig没有看到相关问题，远程连接工具Xshell也不能正常访问该虚拟机。

[root@node1 ~]# ifconfig
lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536inet 127.0.0.1  netmask 255.0.0.0inet6 ::1  prefixlen 128  scopeid 0x10<host>loop  txqueuelen 1000  (Local Loopback)RX packets 0  bytes 0 (0.0 B)RX errors 0  dropped 0  overruns 0  frame 0TX packets 0  bytes 0 (0.0 B)TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255ether 52:54:00:47:f9:45  txqueuelen 1000  (Ethernet)RX packets 0  bytes 0 (0.0 B)RX errors 0  dropped 0  overruns 0  frame 0TX packets 0  bytes 0 (0.0 B)TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

2.解决方法

重启网络相关服务。

[root@node1 ~]# systemctl restart NetworkManager
[root@node1 ~]# systemctl restart network.service

重启网络相关服务后ifconfig查看网络信息如下，可以正常连接。

[root@node1 ~]# ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500inet 192.168.118.128  netmask 255.255.255.0  broadcast 192.168.100.255inet6 fe80::20c:29ff:feda:ad2d  prefixlen 64  scopeid 0x20<link>ether 00:0c:29:da:ad:2d  txqueuelen 1000  (Ethernet)RX packets 10  bytes 1112 (1.0 KiB)RX errors 0  dropped 0  overruns 0  frame 0TX packets 19  bytes 3529 (3.4 KiB)TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536inet 127.0.0.1  netmask 255.0.0.0inet6 ::1  prefixlen 128  scopeid 0x10<host>loop  txqueuelen 1000  (Local Loopback)RX packets 0  bytes 0 (0.0 B)RX errors 0  dropped 0  overruns 0  frame 0TX packets 0  bytes 0 (0.0 B)TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255ether 52:54:00:47:f9:45  txqueuelen 1000  (Ethernet)RX packets 0  bytes 0 (0.0 B)RX errors 0  dropped 0  overruns 0  frame 0TX packets 0  bytes 0 (0.0 B)TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0[root@node1 ~]#