You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
250 lines
6.5 KiB
250 lines
6.5 KiB
#!/bin/sh
|
|
#
|
|
# 2010-2011 Nico Schottelius (nico-cdist at schottelius.org)
|
|
#
|
|
# This file is part of cdist.
|
|
#
|
|
# cdist is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# cdist is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
#
|
|
# Give the user an introduction into cdist
|
|
#
|
|
|
|
. cdist-config
|
|
set -eu
|
|
|
|
banner="cdist-quickstart>"
|
|
continue="Press enter to continue or ctrl-c to abort."
|
|
create_continue="Press enter to create the described files/directories"
|
|
|
|
__prompt()
|
|
{
|
|
echo -n "$banner" "$@"
|
|
read answer
|
|
}
|
|
|
|
################################################################################
|
|
# Intro of quickstart
|
|
#
|
|
cat << eof
|
|
$banner cdist version $__cdist_version
|
|
|
|
Welcome to the interactive guide to cdist!
|
|
This is the interactive tutorial and beginners help for cdist and here's
|
|
our schedule:
|
|
|
|
- Stages: How cdist operates
|
|
- Explorer: Explore facts of the target host
|
|
- Manifest: Map configurations to hosts
|
|
- Types: Bundled functionality
|
|
- Deploy a configuration to the local host!
|
|
|
|
eof
|
|
__prompt "$continue"
|
|
|
|
################################################################################
|
|
# Stages
|
|
#
|
|
cat << eof
|
|
|
|
To deploy configurations to a host, you call
|
|
|
|
cdist-deploy-to <hostname>
|
|
|
|
which makes calls to other scripts, which realise the so called "stages".
|
|
Usually you'll not notice this, but in case you want to debug or hack cdist,
|
|
you can run each stage on its own. Besides that, you just need to remember
|
|
that the command cdist-deploy-to is the main cdist command.
|
|
|
|
See also:
|
|
|
|
Source of cdist-deploy-to, cdist-stages(7)
|
|
|
|
eof
|
|
__prompt "$continue"
|
|
|
|
################################################################################
|
|
# Explorer
|
|
#
|
|
cat << eof
|
|
|
|
The first thing cdist always does is running different explorers on the
|
|
target host. The explorers can be found in the directory
|
|
|
|
${__cdist_explorer_dir}
|
|
|
|
An explorer is executed on the target host and its output is saved to a file.
|
|
You can use these files later to decide what or how to configure the host.
|
|
|
|
For a demonstration, we'll call the OS explorer locally now, but remember:
|
|
This is only for demonstration, normally it is run on the target host.
|
|
The os explorer will which either displays the detected operating system or
|
|
nothing if it does not know your OS.
|
|
|
|
See also:
|
|
|
|
cdist-explorer(7)
|
|
|
|
eof
|
|
explorer="${__cdist_explorer_dir}/os"
|
|
|
|
__prompt "Press enter to execute $explorer"
|
|
|
|
set -x
|
|
"$explorer"
|
|
set +x
|
|
|
|
################################################################################
|
|
# Manifest
|
|
#
|
|
cat << eof
|
|
|
|
The initial manifest is the entry point for cdist to find out, what you would
|
|
like to have configured. It is located at
|
|
|
|
${__cdist_manifest_init}
|
|
|
|
And can be as simple as
|
|
|
|
--------------------------------------------------------------------------------
|
|
__file /etc/cdist-configured --type file
|
|
--------------------------------------------------------------------------------
|
|
|
|
See also:
|
|
|
|
cdist-manifest(7)
|
|
|
|
eof
|
|
__prompt "$continue"
|
|
|
|
cat << eof
|
|
|
|
Let's take a deeper look at the initial manifest to understand what it means:
|
|
|
|
__file /etc/cdist-configured --type file
|
|
| | | \\
|
|
| | The parameter type \\ With the value file
|
|
| |
|
|
| |
|
|
| | This is the object id
|
|
|
|
|
__file is a so called "type"
|
|
|
|
|
|
This essentially looks like a standard command executed in the shell.
|
|
eof
|
|
__prompt "$continue"
|
|
|
|
cat << eof
|
|
|
|
And that's exactly true. Manifests are shell snippets that can use
|
|
types as commands with arguments. cdist prepends a special path
|
|
that contain links to the cdist-type-emulator, to \$PATH, so you
|
|
can use your types as a command.
|
|
|
|
This is also the reason why types should always be prefixed with
|
|
"__", to prevent collisions with existing binaries.
|
|
|
|
The object id is unique per type and used to prevent you from creating
|
|
the same object twice.
|
|
|
|
Parameters are type specific and are always specified as --parameter <value>.
|
|
|
|
See also:
|
|
|
|
cdist-type-build-emulation(1), cdist-type-emulator(1)
|
|
|
|
eof
|
|
__prompt "$continue"
|
|
|
|
################################################################################
|
|
# Types
|
|
#
|
|
cat << eof
|
|
|
|
Types are bundled functionality and are the main component of cdist.
|
|
If you want to have a feature x, you write the type __x. Types are stored in
|
|
|
|
${__cdist_type_dir}
|
|
|
|
And cdist ships with some types already!
|
|
|
|
See also:
|
|
|
|
cdist-type(7)
|
|
|
|
eof
|
|
__prompt "Press enter to see available types"
|
|
|
|
set -x
|
|
ls ${__cdist_type_dir}
|
|
set +x
|
|
|
|
cat << eof
|
|
|
|
Types consist of the following parts:
|
|
|
|
- ${__cdist_name_parameter} (${__cdist_name_parameter_required}/${__cdist_name_parameter_optional}
|
|
- ${__cdist_name_manifest}
|
|
- ${__cdist_name_explorer}
|
|
- ${__cdist_name_gencode}
|
|
|
|
eof
|
|
__prompt "$continue"
|
|
|
|
|
|
cat << eof
|
|
|
|
Every type must have a directory named ${__cdist_name_parameter}, which
|
|
contains required or optional parameters (in newline seperated files).
|
|
|
|
If an object of a specific type was created in the initial manifest,
|
|
the manifest of the type is run and may create other objects.
|
|
|
|
A type may have ${__cdist_name_explorer}, which are very similar to the
|
|
${__cdist_name_explorer} seen above, but with a different purpose:
|
|
They are specific to the type and are not relevant for other types.
|
|
|
|
You may use them for instance to find out details on the target host,
|
|
so you can decide what to do on the target host eventually.
|
|
|
|
After the ${__cdist_name_manifest} and the ${__cdist_name_explorer} of
|
|
a type have been run, ${__cdist_name_gencode} is executed, which creates
|
|
code to be executed on the target on stdout.
|
|
|
|
eof
|
|
__prompt "$continue"
|
|
|
|
################################################################################
|
|
# Deployment
|
|
#
|
|
|
|
cat << eof
|
|
|
|
Now you've got some basic knowledge about cdist, let's configure your localhost!
|
|
|
|
Ensure that you have a ssh server running locally and that you can login as root.
|
|
|
|
The cdist distribution contains some sensible default initial manifest, which
|
|
will create 2 files, /etc/cdist-configured (for every host) and
|
|
/tmp/cdist-testfile (only for localhost).
|
|
|
|
eof
|
|
|
|
cmd="cdist-deploy-to localhost"
|
|
|
|
__prompt "Press enter to run \"$cmd\""
|
|
|
|
# No quotes, we need field splitting
|
|
$cmd
|
|
|