The last two days found that the upstream traffic consumption of the ECS background was abnormal, and found the reason. The system was reset. I remember that there was a disk snapshot at that time, but I didn't think so much when I reset it. As a result, all the data was lost. Alas, the reason is found. It is caused by Alibaba Cloud Shield service. It is normal to stop the service traffic consumption. I thought it was WordPre