Default, MongoDB creates the log file at this path
/var/log/mongodb/mongodb.log, if the log file is not found, please check with the MongoDB config file.
Check the MongoDB config file at
logpath defined where to log.
$ cat /etc/mongod.conf # mongod.conf # Where to store the data. # Note: if you run mongodb as a non-root user (recommended) you may # need to create and set permissions for this directory manually, # e.g., if the parent directory isn't mutable by the mongodb user. dbpath=/var/lib/mongodb3 #where to log logpath=/var/log/mongodb/mongod.log #...