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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If version 3 servers are more abundant, the auhofs process becomes more complex. If the -soft option is used, requests to reinstall the trigger nodes can time out.
In the previous example, multiple mount locations are expressed as a list of mount locations in the map entry. This is good to keep in mind, as it could save you time diagnosing an autofs problem that isn’t really there. Then autofs checks the map again, as shown in Figure Servers on the local subnet are given preference over servers on auttomount remote subnet.
The only way to clear this problem is to have the automounter unmount all of the components in the hierarchy, either by waiting for the file systems to be automatically unmounted or by rebooting the system. A version 2 server can complicate matters, as it might be closer than the nearest version 3 server. Autofs selects the nearest interface to the client.
All other server selection factors are more important than weighting. On receiving the reply, autofs allows the waiting request to proceed.
Each entry in the master map is a direct or indirect map name, its path, and its mount options, as shown in Figure You can create an autofs map that will execute some commands to generate the autofs mount points. So this is how we can configure Autofs Automount in Linux, If you found this article useful then Please Like Us, Subscribe Us or If you have something to say then feel free to comment on the comment box below.
Now the same entry for all clients applies to all architectures. You don’t want to modify files on one server on one occasion and, minutes later, modify the “same” file on another server. You can influence the selection of servers at the same proximity level by adding a weighting value to the autofs map. When specifying a FUSE file system location in map file, certain characters, notably the hash and the colon: Autofs sends a message to the automountd for the requested file system to be mounted.
Figure Server Proximity 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. I thankful to all our website viewers who encourage me to write quality posts and articals, Keep visit to our site and I will bring all latest Linux Tutorials, Updates and News for you. You create maps to meet the needs of your environment using the Solstice System Management Tools. You can use variables anywhere in an entry line except as a key.
Autofs last edited Under these circumstances running the following command:. The automount command reads the master map at system startup.
After the file system is mounted, further access does not require any action from automountd until the file system is automatically unmounted.
HOW TO CONFIGURE AUTOFS (AUTOMOUNT) IN LINUX
Servers without a weighting have a value of zero most likely to be selected. One solution to this would be to create separate entries for each directory, as follows: The sorting can also be influenced by using weighting see “Autofs and Weighting”. Autofs and Weighting You can influence the selection of servers at the same proximity level by atuofs a weighting value to the autofs map. As applications and other hotwo systems that users require change their location, the maps must reflect those changes.
Map Files As indicated above, each autofs mount has its own map file. You aktomount a functioning NFS mount via autofs! Note – All other server selection factors are more important than weighting. Mount read-write, specifying a username and password to use to connect to the share: During the unmounting process, any trigger nodes are removed and then the file system is unmounted.
But remember that you need to access a directory before it is auto-mounted. Table shows the predefined map variables. Mounts managed through the autofs service should not be manually aytofs or unmounted.
The following line is for shares using older versions of NFS prior to version 4: Auto-mount or auto-mounting refers to the process of automatically mounting filesystems.
How Autofs Works
In an aytomount with NFS autifs servers, such a configuration can be useful. The benefit is that the best available server is used automatically without any effort required by the user.
For example, consider the following master map entry: Autofs chooses the nearest server and therefore confines NFS network traffic to a local network segment. However, if you need to authenticate before accessing the Samba share, automount will not function.
In such a case, the above line would appear as follows: May 4, at 5: The higher the weighting value, the lower the chance the server will be selected.