---
name: "fai-deps"
section: "8"
platform: "linux"
package: "fai-client"
version: "6.4.3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/fai-deps"
---

# fai-deps(8)

## NAME

```
  fai-deps - class dependencies for FAI
```

## SYNOPSIS

```
  fai-deps [-h] [--man] [-d]
```

## ABSTRACT

```
  implements dependencies between fai classes.
```

## DESCRIPTION

fai-deps uses files `$FAI`/class/\*.deps to sort the classes in `$LOGDIR`/FAI\_CLASSES and define additional ones. While doing so, it retains the original order as much as possible.

\*.deps files may contain class names, separated by whitespace. Comments ( after # or ; ) are ignored

e.g. you have a class WORDPRESS that depends on the classes VHOST and POSTGRES . VHOST again may depend on WEBSERVER. So if you want to install the blogging software wordpress, you add a file

```
  $FAI/class/WORDPRESS.deps
```

that contains the words\
   VHOST\
   POSTGRES

and a file\
   `$FAI`/class/VHOST.deps

that contains the word\
   WEBSERVER

The order often is important, so this script is taking care of it. The order of the example above would be:\
   WEBSERVER VHOST POSTGRES WORDPRESS

That way, in `$FAI`/scripts/ first the webserver would be configured, then the vhosts, ...

It removes double entries from FAI\_CLASSES and handles circular dependencies\[1\].

I do not recommend using circular dependencies, but if you accidentally define them, they will not break your neck. But you'll get a warning ...

## ENVIROMENT

One non-standard perl module is required:\
  Graph::Directed; On debian install libgraph-perl

The following environment variables are used:

```
 $LOGDIR  : path to fai temporary files
 $FAI     : path to fai config space
```

## SEE ALSO

```
 https://fai-project.org
```

## AUTHOR

```
 Copyright 2008 by Ingo Wichmann <iw@linuxhotel.de>
 This software ist free software; you can redistribute it and/or modify
 it unter the same terms as Perl itself.
```