View the most recent log
In the azkaban directory
vim log file
Find the Caused by at the bottom:
It can be seen from the possible reasons that the azkaban user of mysql refuses access to the azkaban database
Solution:
Use root user to log in to mysql
Authorize azkaban users to access the azkaban database
grant all privileges on 'azkaban'.* to 'azkaban'@'%';Successfully solve the problem of seconds after starting the process