---
Title: "Mount with automount (autofs)"
Author: "Kristof Vandam"
Categories: [ "administration" ]
Tags: [ "linux", "data", "mount", "shares" ]
Date: 2018-11-09T10:08:15+02:00
Truncated: true
Draft: false
---
Automagically mount remote directories on login.
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## Install the required pakages

```.language-command
sudo yum -y install autofs
```

## Create the entry file

the mapper file is a file where we specify the directory where all our mounts should be placed.

This file should be stored in */etc/auto.master.d*, note that the extension is required to be *.autofs*

for example: */etc/auto.master.d/home.autofs*

```.language-command
/home/guests /etc/auto.home

```

The value for */home/guests* is the file where we specify our mount options.

**Note**: Make sure the */home/guests* directory exists, if not create it with:

```.language-command
mkdir /home/guests
```

## Create the mapper file

We earlier specified where our map file should be stored (*/etc/auto.home*), create this file.

Say we want to auto mount the home directories stored on **serverA** on /home/guests/[*USER*] when [*USER*] logs in.

```.language-command
* -rw,sync serverA:/home/guests/&
```

* The wildcards task is to create the directory based on the users homedirectory on serverA (specified with **&**)
* We give option like: read/write and sync
* As last param we have to say where we want to mount to, again, the **&** is dynamic and maps to the logged in user.

## Enable and start the service

```.language-command
sudo systemctl enable autofs
sudo systemctl start autofs
```

## Wrapping up

Log in as a user, and check if the mount is present as expected.

```.language-command
df -h
```

Should output something like:

```.language-command
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1      8.0G  5.6G  2.5G  70% /
devtmpfs        224M     0  224M   0% /dev
tmpfs           244M     0  244M   0% /dev/shm
tmpfs           244M   41M  204M  17% /run
tmpfs           244M     0  244M   0% /sys/fs/cgroup
tmpfs            49M     0   49M   0% /run/user/1000
tmpfs            49M     0   49M   0% /run/user/0
/serverA:/home/guests/user1       200M   0     200M 0% /home/guests/user1
```

Note the last line where we see that the mount is present