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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Table shows the predefined map variables. You can use variables anywhere in an entry line except as a key.

How Autofs Works (System Administration Guide, Volume 3)

The sorting can also be influenced by using weighting see “Autofs and Weighting”. The higher the weighting value, the lower the chance the server will be selected. If the -soft option is used, requests to reinstall the trigger nodes can time out.

Mounting Other Types of Files Systems 6. If several servers supporting the same protocol are on the local subnet, the time to connect to each server is determined and the fastest is used.

If NIS is selected and autofs cannot find a map that it needs, but finds a map name that contains one or more underscores, the underscores are changed to dots, which allows the old NIS file names to work. Configuration autofs can be configured by editing configuration files. The mount process is generally the same for all mounts, but the final result changes with the mount point specified and the complexity of the maps.

If version 3 servers are more abundant, the sorting process becomes more complex. For example, the following line instructs autofs to create a mount-point at the place specified in auto. On receiving the reply, autofs allows the waiting request to proceed. Mount read-write, specifying a user and group to own the files: How Autofs Navigates Through the Network Maps Autofs searches a series of maps to navigate its way through the network.

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HOW TO CONFIGURE AUTOFS (AUTOMOUNT) IN LINUX

Type the following into a terminal: If the map name starts with a dash -automount consults the appropriate built-in map, such auomount xfn or hosts. External Links The mount man page – hosted on the official Ubuntu website. Direct maps create a mount-point at the path specified in the relevant map file.

You can create an autofs map that will execute some commands to generate the autofs mount points. One solution to this would be to create separate entries for each directory, as follows: Under these circumstances running the following command:.

The failure to reinstall the trigger notes leaves no access to the next level of mounts. Which server you mount them from does not matter, as long as the server is running and exporting its file systems.

HOW TO CONFIGURE AUTOFS (AUTOMOUNT) IN LINUX

Under these circumstances running the following autors The following file is an example of a name service switch file:. Autofs intercepts the request. Auto-mount or auto-mounting refers to the process of automatically mounting filesystems. Whichever protocol is supported on the most servers becomes the protocol supported by default. Map files take the following format: Map Files As indicated above, each autofs mount has its own map file.

You have a functioning NFS mount via autofs! November 28, at 5: Direct and Indirect Maps automount maps can be direct or indirect.

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If you have a lot of NFS or Samba shares, you may want to uncomment these lines. During the sorting process, a automoutn of the number of servers supporting the NFS version 2 and NFS version 3 protocols is made.

Introduction autofs howwto a program for automatically mounting directories on an as-needed basis. After the autofs mounts are set up, they can trigger file systems to be mounted under them.

How Autofs Works

Leave a Reply Cancel reply Your email address will not be published. Caution – Do not use the -soft option when specifying hierarchical layers. These autofs mounts are not automatically mounted at startup time.

Autofs is a client-side service that automatically mounts the appropriate file system.

To check the NFS exports just run the below command. What the autofs service does when a mount request is triggered depends on how the automounter maps are configured. Servers on the local subnet are given preference over servers on a remote subnet.

As we can see above we have two NFS exports i. Check the output from the first terminal for clues as to why the mount failed or was not attempted.

Unless you have a good reason for changing this, leave it as the default. The unmounting that occurs after a certain amount of idle time is from the bottom up reverse order of mounting.