MongoDB log files are too large to handle

With logappend=true, the log files of MongoDB will be constantly added to the same log files. After a long time, the log files of MongoDB will naturally become very large.

The solution is as follows: (special note: the startup must be --logpath specifies the log path)

Connect to the server using mongo

use admin  // Switch to the admin The database 

db.runCommand({logRotate:1})

This will cause mongo to close the current log file and restart a new log file without stopping the mongodb service.