Regarding https://docs.oracle.com/cd/E52668_01/E54669/html/ol7-s4-fsadmin.html
According to my tests, using a file to specify login credentials and CIFS only works when /sbin/mount.cifs exists. Otherwise, you'll see a message like: "CIFS VFS: No username specified". This requires the installation of the cifs-utils package.
For example:
# yum install autofs cifs-utils
/etc/auto.master:
+auto.master
/mnt /etc/auto.backup --timeout=600 --ghost
/etc/auto.backup:
backup -fstype=cifs,rw,noperm,credentials=/root/.backup_credentials ://server1.example.com/backup
/root/.backup_credentials:
username=dude
password=mysecret
# systemctl enable autofs
# systemctl restart autofs
Usage:
cd /mnt
cd backup
ls