The CentOS7 Nic cannot be started.

The CentOS7 Nic cannot be started.

This problem occurs in Linux. The NIC of centOS7 cannot be started, and thus the cluster cannot be created. If there is no IP address for the ifconf-env33 Nic

See the figure below.

 

If you meet me, hehao, smile.

The Virtual Machine Nic does not get up. This problem is embarrassing. I can only tell you the solution ..

I,Disable computer. Really, I made a mistake one day in the editor and found a solution on the Internet. I didn't want to be ready the next day. It cannot be hurt. Although the virtual machine is good. However, this prevents the second problem, so the VM snapshot function is enabled when the Nic starts normally. When your environment changes a bit, you can save the snapshot. When the NIC, or the snapshot is restored when there are various faults with the VM. Therefore, the virtual machine that the network card is not started should put it first. Do not shut down and keep it suspended. Don't worry, don't worry if the computer is not good after it is restarted twice. It will be good if you go online the next day. This bug should be caused by unstable virtual machines or your windows system.

2. Be sureCreate Snapshot, Snapshot, snapshot (important thing !!)

In the future, both the hadoop cluster and the HA hive need to establish a cluster environment. If a machine fails, all the work may be done. Therefore, we must develop the habit of creating snapshots.