Private Server Records

This page records the incorrect operation made by server administrators which cause downtime of volunteer-certificate server.

Incident 1

When Xin Wang updates the backend code on the server at 16:37 March 6. He did not know the latest code needs images folder. This issue is resolved at 22:37 March 7 by Feng Zhao. Many volunteers won't receive their certificates due to the server error if they trigger the API endpoint within this time.

Incident 2

When transferring from Xin Wang's private machine to the cloud server of jdcloud, Feng Zhao did it within 10 minutes, with the help of Frank to do some domain name resolution. The transferring is done at about 0:10 2020/3/10. However, due to a mistake of Feng Zhao. The template image pic.jpg is not uploaded to the new cloud server. The remedy is done at 1:36 2020/3/10 by Feng Zhao.

The error message of ~/logs/volunteer-certificates goes like

20-03-10 00:22:37 +0800] [22591] [INFO] [Errno 2] No such file or directory: 'pic.jpg'

which has 28 records from 00:18 to 00:22.

##Incident 3 When you update the data.json file, data.json becomes binary garbled. This does not happen when the Windows system generates json file checks. It should be related to encoding= "utf-8" in the program. At around 14:00 on March 25, about 50 users' status were rolled back to zero and re-sent.The method to check the newly generated data.json is to use vscode, and then write a program to print the difference between the two data.json。 20-03-25 14:22:00 data.json file error.