Mounting a File System to a Linux as a Non-root User

Scenarios

By default, a Linux ECS allows only the root user to use the mount command to mount file systems, but you can grant the permissions of user root to other users. Such users can then use the mount command to mount file systems. The following describes how to mount a file system to a Linux ECS as a common user. EulerOS is used in this example.

Prerequisites

• A non-root user has been created on the ECS.
• A file system has been created and can be mounted to the ECS as root.
• The shared path of the file system has been obtained.

Procedure

1. Log in to the ECS as user root.
2. Assign the permissions of user root to a non-root user.
   1. Run chmod 777 /etc/sudoers to make the sudoers file editable.
   2. Use the which command to view the mount and umount command paths.
      Figure 1 Viewing command paths
      
   3. Run vi /etc/resolv.conf to edit the sudoers file.
   4. Add a common user under the root account. In this example, user mike is added.
      Figure 2 Adding a user
      
   5. Press Esc, enter :wq, and press Enter to save and exit.
   6. Run chmod 440 /etc/sudoers to make the sudoers file read-only.

3. Log in to the ECS as user mike.
4. Run the following command to mount the file system. For details about the mount parameters, see Table 1.

   sudo mount -t nfs -o vers=3,timeo=600,noresvport,nolock Shared path Local path

   Table 1 Parameter description

   Parameter	Description
   Shared path	The format is File system IP address:/, for example, 192.168.0.0:/. NOTE: Variable x is a digit or letter. If the shared path is too long to display completely, you can adjust the column width.
   Local path	Local path on the used to mount the file system, for example, /local_path.

5. View the mounted file system.

   mount -l

   If the command output contains the following information, the file system has been mounted:

   example.com:/share-xxx on /local_path type nfs (rw,vers=3,timeo=600,nolock,addr=)