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之前VMware安装的虚拟机，ip 是192.168.157.142，正常的时候如下
[root@localhost ~]# ifconfig
eno16777736: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500inet 192.168.157.142 netmask 255.255.255.0 broadcast 192.168.157.255inet6 fe80::20c:29ff:fe21:73d5 prefixlen 64 scopeid 0x20<link>ether 00:0c:29:21:73:d5 txqueuelen 1000 (Ethernet)RX packets 2582620 bytes 3563744716 (3.3 GiB)RX errors 0 dropped 0 overruns 0 frame 0TX packets 308014 bytes 31467889 (30.0 MiB)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 0 (Local Loopback)RX packets 277188 bytes 77287232 (73.7 MiB)RX errors 0 dropped 0 overruns 0 frame 0TX packets 277188 bytes 77287232 (73.7 MiB)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 52:54:00:08:79:f5 txqueuelen 0 (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最近打开发现ip突然没了，
[root@localhost ~]# ifconfig
eno16777736: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500ether 00:0c:29:21:73:d5 txqueuelen 1000 (Ethernet)RX packets 2697684 bytes 3699693648 (3.4 GiB)RX errors 0 dropped 0 overruns 0 frame 0TX packets 328615 bytes 33548119 (31.9 MiB)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 0 (Local Loopback)RX packets 510384 bytes 128345501 (122.3 MiB)RX errors 0 dropped 0 overruns 0 frame 0TX packets 510384 bytes 128345501 (122.3 MiB)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 52:54:00:08:79:f5 txqueuelen 0 (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首先去确认你的网卡配置是否正确，如果没问题，那大概率就是我遇到的这种情况，如下：
确认以下服务，启动即可。
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