AUTOFS AUTOMOUNT HOWTO PDF

AutoFS provides automounting of removable media or network shares when they are Removable media; NFS network mounts. Configure a basic automount function on your network file system with autofs. Automount mini−Howto. Rahul Sundaram, [email protected] v, −12− This file describes the autofs automounter, how to configure it, and .

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Introduction autofs is a program for automatically mounting directories on an as-needed basis. Auto-mounts are mounted only as they are accessed, and are unmounted after a period of inactivity.

Quick note on terms To avoid confusion, the following terminologies will be used: When autofs is started, an automount daemon is spawned for each map. Auto-mount or auto-mounting refers to the process of automatically mounting filesystems.

Installation Install the autofs package either by clicking here or entering the following in a terminal window: Configuration autofs can be configured by editing configuration files. There are other ways to configure autofs on a network see AutofsLDAPbut config files provide the simplest setup. Unless you have a good reason for changing this, leave it as the default.

1. Introduction

Here is the sample file provided by Ubuntu: Each of the lines in auto. These lines have the following format: Direct and Indirect Maps automount maps can be direct or indirect.

Indirect maps, such hoato those in the auto. For example, consider the following master map entry: Direct maps create a mount-point at the path specified in the relevant map file. The mount-point entry in auto. For example, the following line instructs autofs to create a mount-point at the place specified in auto.

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Map Files As indicated above, each autofs mount has its own map file. These files are usually named using the convention auto.

Map files take the following format: This howto assumes that you are already familiar with NFS exports, and that you already have a properly-functioning NFS share on your network. Type the following into a terminal: The following line is for shares ahtomount older versions of NFS prior to version 4: In such a case, the above line would appear as follows: Make sure it works In order to access the share and verify that it is working properly, enter the following into a shell: You have a functioning NFS mount via autofs!

If you want to learn some more advanced information, keep reading. But remember that you need to access a directory before it is auto-mounted.

How Autofs Works

Once it has been accessed, your share will be listed only until it times out. This is good to keep in mind, as it could save you time diagnosing an autofs problem that isn’t really there. If you have a lot of NFS or Samba shares, you may want to uncomment these lines. In an environment with NFS file servers, such a configuration can be useful. However, if you need to authenticate before accessing the Samba share, automount will not function.

Wildcard characters Let’s say you have a directory with a number of subdirectories which you want to have auto-mounted individually.

One solution to this would be to create separate entries for each directory, as follows: Instead, you can use wild-card characters, as follows: You can also use variables see autofs 5 man page to substitute users and other parameters to be able to create generic file for multiple users. Mounting Other Types of Files Systems 6. Mount read-write, specifying a user and group to own the files: Mount autoffs, specifying a username and password to use to connect to the share: The file-system location specifies the user-space binary used to mount the file system, followed by a hashfollowed by the location.

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Autofs – Community Help Wiki

When specifying a FUSE file system location in map file, certain characters, notably the hash autompunt the colon: The entire location must be preceded by a colon: In an autofs mount, the colon: You should have already set-up password-less authentication via public key encryption.

Be sure that you understand the security implications of this before proceeding. Debugging Auto Mount Problems If you are having trouble automounting your file systems, it may be useful to run automount in the foreground.

Stop the autofs daemon sudo service autofs stop Run automount in automouht foreground with verbose information sudo automount -f -v From another terminal, try to mount your file-systems by changing directories into the mountpoint.

Check the output from the first terminal for clues as to why the mount failed or was not attempted. See Also Mount – Information about the mounting process and its configuration in Ubuntu.

External Links The mount man page – hosted on howti official Ubuntu website. Autofs last edited Partners Support Community Ubuntu.

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