the directory have spaces
cd /var/lib/
drwxr-xr-x 2 mongod mongod 27 Mar 30 08:12 mongo
cd /var/log/
drwxr-xr-x 2 mongod mongod 24 Mar 28 15:02 mongodb
df -h
/dev/sdb 100G 33M 100G 1% /var/lib/mongo
mount
/dev/sdb on /var/lib/mongo type xfs (rw,relatime,attr2,inode64,noquota)
cat /etc/passwd
mongod:x:997:996:mongod:/var/lib/mongo:/bin/false
these are the characteristics of the configuration. if you need others to help me let me know