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cdist/docs/src/man1/cdist.rst
Darko Poljak feb221c5df Improve configuration docs.
2017-09-01 10:40:01 +02:00

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cdist(1)
========
NAME
----
cdist - Usable Configuration Management
SYNOPSIS
--------
::
cdist [-h] [-q] [-v] [-V] {banner,config,install,inventory,shell} ...
cdist banner [-h] [-q] [-v]
cdist config [-h] [-q] [-v] [-b] [-g CONFIG_FILE]
[-C CACHE_PATH_PATTERN] [-c CONF_DIR] [-i MANIFEST]
[-j [JOBS]] [-n] [-o OUT_PATH] [-R [{tar,tgz,tbz2,txz}]]
[-r REMOTE_OUT_DIR] [--remote-copy REMOTE_COPY]
[--remote-exec REMOTE_EXEC] [-I INVENTORY_DIR] [-A] [-a]
[-f HOSTFILE] [-p [HOST_MAX]] [-s] [-t]
[host [host ...]]
cdist install [-h] [-q] [-v] [-b] [-g CONFIG_FILE]
[-C CACHE_PATH_PATTERN] [-c CONF_DIR] [-i MANIFEST]
[-j [JOBS]] [-n] [-o OUT_PATH] [-R [{tar,tgz,tbz2,txz}]]
[-r REMOTE_OUT_DIR] [--remote-copy REMOTE_COPY]
[--remote-exec REMOTE_EXEC] [-I INVENTORY_DIR] [-A] [-a]
[-f HOSTFILE] [-p [HOST_MAX]] [-s] [-t]
[host [host ...]]
cdist inventory [-h] [-q] [-v] [-b] [-g CONFIG_FILE] [-I INVENTORY_DIR]
{add-host,add-tag,del-host,del-tag,list} ...
cdist inventory add-host [-h] [-q] [-v] [-b] [-g CONFIG_FILE]
[-I INVENTORY_DIR] [-f HOSTFILE]
[host [host ...]]
cdist inventory add-tag [-h] [-q] [-v] [-b] [-g CONFIG_FILE]
[-I INVENTORY_DIR] [-f HOSTFILE] [-T TAGFILE]
[-t TAGLIST]
[host [host ...]]
cdist inventory del-host [-h] [-q] [-v] [-b] [-g CONFIG_FILE]
[-I INVENTORY_DIR] [-a] [-f HOSTFILE]
[host [host ...]]
cdist inventory del-tag [-h] [-q] [-v] [-b] [-g CONFIG_FILE]
[-I INVENTORY_DIR] [-a] [-f HOSTFILE]
[-T TAGFILE] [-t TAGLIST]
[host [host ...]]
cdist inventory list [-h] [-q] [-v] [-b] [-g CONFIG_FILE]
[-I INVENTORY_DIR] [-a] [-f HOSTFILE] [-H] [-t]
[host [host ...]]
cdist shell [-h] [-q] [-v] [-s SHELL]
DESCRIPTION
-----------
cdist is the frontend executable to the cdist configuration management.
It supports different subcommands as explained below.
It is written in Python so it requires :strong:`python`\ (1) to be installed.
It requires a minimal Python version 3.2.
GENERAL
-------
All commands accept the following options:
.. option:: -h, --help
Show the help screen.
.. option:: -q, --quiet
Quiet mode: disables logging, including WARNING and ERROR.
.. option:: -v, --verbose
Increase the verbosity level. Every instance of -v increments the verbosity
level by one. Its default value is 0 which includes ERROR and WARNING levels.
The levels, in order from the lowest to the highest, are:
ERROR (-1), WARNING (0), INFO (1), VERBOSE (2), DEBUG (3) TRACE (4 or higher).
.. option:: -V, --version
Show version and exit.
BANNER
------
Displays the cdist banner. Useful for printing
cdist posters - a must have for every office.
CONFIG/INSTALL
--------------
Configure/install one or more hosts.
Install command is currently in beta.
.. option:: -A, --all-tagged
Use all hosts present in tags db. Currently in beta.
.. option:: -a, --all
List hosts that have all specified tags, if -t/--tag
is specified.
.. option:: -b, --beta
Enable beta functionality.
.. option:: -C CACHE_PATH_PATTERN, --cache-path-pattern CACHE_PATH_PATTERN
Sepcify custom cache path pattern. If it is not set then
default hostdir is used. For more info on format see
:strong:`CACHE PATH PATTERN FORMAT` below.
.. option:: -c CONF_DIR, --conf-dir CONF_DIR
Add a configuration directory. Can be specified multiple times.
If configuration directories contain conflicting types, explorers or
manifests, then the last one found is used.
.. option:: -f HOSTFILE, --file HOSTFILE
Read specified file for a list of additional hosts to operate on
or if '-' is given, read stdin (one host per line).
If no host or host file is specified then, by default,
read hosts from stdin. For the file format see
:strong:`HOSTFILE FORMAT` below.
.. option:: -g CONFIG_FILE, --config-file CONFIG_FILE
Use specified custom configuration file.
.. option:: -I INVENTORY_DIR, --inventory INVENTORY_DIR
Use specified custom inventory directory. Inventory
directory is set up by the following rules: if cdist
configuration resolves this value then specified
directory is used, if HOME env var is set then
~/.cdit/inventory is used, otherwise distribution
inventory directory is used.
.. option:: -i MANIFEST, --initial-manifest MANIFEST
Path to a cdist manifest or - to read from stdin.
.. option:: -j [JOBS], --jobs [JOBS]
Operate in parallel in specified maximum number of
jobs. Global explorers, object prepare and object run
are supported. Without argument CPU count is used by
default. Currently in beta.
.. option:: -n, --dry-run
Do not execute code.
.. option:: -o OUT_PATH, --out-dir OUT_PATH
Directory to save cdist output in.
.. option:: -p [HOST_MAX], --parallel [HOST_MAX]
Operate on multiple hosts in parallel for specified
maximum hosts at a time. Without argument CPU count is
used by default.
.. option:: -R [{tar,tgz,tbz2,txz}], --use-archiving [{tar,tgz,tbz2,txz}]
Operate by using archiving with compression where
appropriate. Supported values are: tar - tar archive,
tgz - gzip tar archive (the default), tbz2 - bzip2 tar
archive and txz - lzma tar archive. Currently in beta.
.. option:: -r REMOTE_OUT_PATH, --remote-out-dir REMOTE_OUT_PATH
Directory to save cdist output in on the target host.
.. option:: -s, --sequential
Operate on multiple hosts sequentially (default).
.. option:: --remote-copy REMOTE_COPY
Command to use for remote copy (should behave like scp).
.. option:: --remote-exec REMOTE_EXEC
Command to use for remote execution (should behave like ssh).
.. option:: -t, --tag
Host is specified by tag, not hostname/address; list
all hosts that contain any of specified tags.
Currently in beta.
HOSTFILE FORMAT
~~~~~~~~~~~~~~~
The HOSTFILE contains one host per line.
A comment is started with '#' and continues to the end of the line.
Any leading and trailing whitespace on a line is ignored.
Empty lines are ignored/skipped.
The Hostfile lines are processed as follows. First, all comments are
removed. Then all leading and trailing whitespace characters are stripped.
If such a line results in empty line it is ignored/skipped. Otherwise,
host string is used.
CACHE PATH PATTERN FORMAT
~~~~~~~~~~~~~~~~~~~~~~~~~
Cache path pattern specifies path for a cache directory subdirectory.
In the path, '%N' will be substituted by the target host, '%h' will
be substituted by the calculated host directory, '%P' will be substituted
by the current process id. All format codes that
:strong:`python` :strong:`datetime.strftime()` function supports, except
'%h', are supported. These date/time directives format cdist config/install
start time.
If empty pattern is specified then default calculated host directory
is used.
Calculated host directory is a hash of a host cdist operates on.
Resulting path is used to specify cache path subdirectory under which
current host cache data are saved.
INVENTORY
---------
Manage inventory database.
Currently in beta with all sub-commands.
INVENTORY ADD-HOST
------------------
Add host(s) to inventory database.
.. option:: host
Host(s) to add.
.. option:: -b, --beta
Enable beta functionality.
.. option:: -f HOSTFILE, --file HOSTFILE
Read additional hosts to add from specified file or
from stdin if '-' (each host on separate line). If no
host or host file is specified then, by default, read
from stdin. Hostfile format is the same as config hostfile format.
.. option:: -g CONFIG_FILE, --config-file CONFIG_FILE
Use specified custom configuration file.
.. option:: -I INVENTORY_DIR, --inventory INVENTORY_DIR
Use specified custom inventory directory. Inventory
directory is set up by the following rules: if cdist
configuration resolves this value then specified
directory is used, if HOME env var is set then
~/.cdit/inventory is used, otherwise distribution
inventory directory is used.
INVENTORY ADD-TAG
-----------------
Add tag(s) to inventory database.
.. option:: host
List of host(s) for which tags are added.
.. option:: -b, --beta
Enable beta functionality.
.. option:: -f HOSTFILE, --file HOSTFILE
Read additional hosts to add tags from specified file
or from stdin if '-' (each host on separate line). If
no host or host file is specified then, by default,
read from stdin. If no tags/tagfile nor hosts/hostfile
are specified then tags are read from stdin and are
added to all hosts. Hostfile format is the same as config hostfile format.
.. option:: -g CONFIG_FILE, --config-file CONFIG_FILE
Use specified custom configuration file.
.. option:: -I INVENTORY_DIR, --inventory INVENTORY_DIR
Use specified custom inventory directory. Inventory
directory is set up by the following rules: if cdist
configuration resolves this value then specified
directory is used, if HOME env var is set then
~/.cdit/inventory is used, otherwise distribution
inventory directory is used.
.. option:: -T TAGFILE, --tag-file TAGFILE
Read additional tags to add from specified file or
from stdin if '-' (each tag on separate line). If no
tag or tag file is specified then, by default, read
from stdin. If no tags/tagfile nor hosts/hostfile are
specified then tags are read from stdin and are added
to all hosts. Tagfile format is the same as config hostfile format.
.. option:: -t TAGLIST, --taglist TAGLIST
Tag list to be added for specified host(s), comma
separated values.
INVENTORY DEL-HOST
------------------
Delete host(s) from inventory database.
.. option:: host
Host(s) to delete.
.. option:: -a, --all
Delete all hosts.
.. option:: -b, --beta
Enable beta functionality.
.. option:: -f HOSTFILE, --file HOSTFILE
Read additional hosts to delete from specified file or
from stdin if '-' (each host on separate line). If no
host or host file is specified then, by default, read
from stdin. Hostfile format is the same as config hostfile format.
.. option:: -g CONFIG_FILE, --config-file CONFIG_FILE
Use specified custom configuration file.
.. option:: -I INVENTORY_DIR, --inventory INVENTORY_DIR
Use specified custom inventory directory. Inventory
directory is set up by the following rules: if cdist
configuration resolves this value then specified
directory is used, if HOME env var is set then
~/.cdit/inventory is used, otherwise distribution
inventory directory is used.
INVENTORY DEL-TAG
-----------------
Delete tag(s) from inventory database.
.. option:: host
List of host(s) for which tags are deleted.
.. option:: -a, --all
Delete all tags for specified host(s).
.. option:: -b, --beta
Enable beta functionality.
.. option:: -f HOSTFILE, --file HOSTFILE
Read additional hosts to delete tags for from
specified file or from stdin if '-' (each host on
separate line). If no host or host file is specified
then, by default, read from stdin. If no tags/tagfile
nor hosts/hostfile are specified then tags are read
from stdin and are deleted from all hosts. Hostfile
format is the same as config hostfile format.
.. option:: -g CONFIG_FILE, --config-file CONFIG_FILE
Use specified custom configuration file.
.. option:: -I INVENTORY_DIR, --inventory INVENTORY_DIR
Use specified custom inventory directory. Inventory
directory is set up by the following rules: if cdist
configuration resolves this value then specified
directory is used, if HOME env var is set then
~/.cdit/inventory is used, otherwise distribution
inventory directory is used.
.. option:: -T TAGFILE, --tag-file TAGFILE
Read additional tags from specified file or from stdin
if '-' (each tag on separate line). If no tag or tag
file is specified then, by default, read from stdin.
If no tags/tagfile nor hosts/hostfile are specified
then tags are read from stdin and are added to all
hosts. Tagfile format is the same as config hostfile format.
.. option:: -t TAGLIST, --taglist TAGLIST
Tag list to be deleted for specified host(s), comma
separated values.
INVENTORY LIST
--------------
List inventory database.
.. option:: host
Host(s) to list.
.. option:: -a, --all
List hosts that have all specified tags, if -t/--tag
is specified.
.. option:: -b, --beta
Enable beta functionality.
.. option:: -f HOSTFILE, --file HOSTFILE
Read additional hosts to list from specified file or
from stdin if '-' (each host on separate line). If no
host or host file is specified then, by default, list
all. Hostfile format is the same as config hostfile format.
.. option:: -g CONFIG_FILE, --config-file CONFIG_FILE
Use specified custom configuration file.
.. option:: -H, --host-only
Suppress tags listing.
.. option:: -I INVENTORY_DIR, --inventory INVENTORY_DIR
Use specified custom inventory directory. Inventory
directory is set up by the following rules: if cdist
configuration resolves this value then specified
directory is used, if HOME env var is set then
~/.cdit/inventory is used, otherwise distribution
inventory directory is used.
.. option:: -t, --tag
Host is specified by tag, not hostname/address; list
all hosts that contain any of specified tags.
SHELL
-----
This command allows you to spawn a shell that enables access
to the types as commands. It can be thought as an
"interactive manifest" environment. See below for example
usage. Its primary use is for debugging type parameters.
.. option:: -s SHELL, --shell SHELL
Select shell to use, defaults to current shell. Used shell should
be POSIX compatible shell.
CONFIGURATION
-------------
cdist obtains configuration data from the following sources in the following
order (from higher to lower precedence):
#. command-line options
#. configuration file specified at command-line
#. configuration file specified in CDIST_CONFIG_FILE environment variable
#. environment variables
#. user's configuration file (first one found of ~/.cdist.cfg, $XDG_CONFIG_HOME/cdist/cdist.cfg, in specified order)
#. system-wide configuration file (/etc/cdist.cfg).
CONFIGURATION FILE FORMAT
~~~~~~~~~~~~~~~~~~~~~~~~~
cdist configuration file is in the INI file format. Currently it supports
only [GLOBAL] section.
The possible keywords and their meanings are as follows:
:strong:`archiving`
Use specified archiving. Valid values include:
'none', 'tar', 'tgz', 'tbz2' and 'txz'.
:strong:`beta`
Enable beta functionality. It recognizes boolean values from
'yes'/'no', 'on'/'off', 'true'/'false' and '1'/'0'
:strong:`cache_path_pattern`
Specify cache path pattern.
:strong:`conf_dir`
Comma separated list of configuration directories.
If also specified at command line then values from command line are
appended to this value.
:strong:`init_manifest`
Specify default initial manifest.
:strong:`inventory_dir`
Specify inventory directory.
:strong:`jobs`
Specify number of jobs for parallel processing. If -1 then the default,
number of CPU's in the system is used. If 0 then parallel processing in
jobs is disabled. If set to positive number then specified maximum
number of processes will be used.
:strong:`local_shell`
Shell command used for local execution.
:strong:`out_path`
Directory to save cdist output in.
:strong:`parallel`
Process hosts in parallel. If -1 then the default, number of CPU's in
the system is used. If 0 then parallel processing of hosts is disabled.
If set to positive number then specified maximum number of processes
will be used.
:strong:`remote_copy`
Command to use for remote copy (should behave like scp).
:strong:`remote_exec`
Command to use for remote execution (should behave like ssh).
:strong:`remote_out_path`
Directory to save cdist output in on the target host.
:strong:`remote_shell`
Shell command at remote host used for remote execution.
:strong:`verbosity`
Set verbosity level. Valid values are:
'ERROR', 'WARNING', 'INFO', 'VERBOSE', 'DEBUG', 'TRACE' and 'OFF'.
FILES
-----
~/.cdist
Your personal cdist config directory. If exists it will be
automatically used.
~/.cdist/inventory
The home inventory directory. If ~/.cdist exists it will be used as
default inventory directory.
cdist/conf
The distribution configuration directory. It contains official types and
explorers. This path is relative to cdist installation directory.
cdist/inventory
The distribution inventory directory.
This path is relative to cdist installation directory.
/etc/cdist.cfg
Global cdist configuration file, if exists.
~/.cdist.cfg or $XDG_CONFIG_HOME/cdist/cdist.cfg
Local cdist configuration file, if exists.
NOTES
-----
cdist detects if host is specified by IPv6 address. If so then remote_copy
command is executed with host address enclosed in square brackets
(see :strong:`scp`\ (1)).
EXAMPLES
--------
.. code-block:: sh
# Configure ikq05.ethz.ch with debug enabled
% cdist config -vvv ikq05.ethz.ch
# Configure hosts in parallel and use a different configuration directory
% cdist config -c ~/p/cdist-nutzung \
-p ikq02.ethz.ch ikq03.ethz.ch ikq04.ethz.ch
# Use custom remote exec / copy commands
% cdist config --remote-exec /path/to/my/remote/exec \
--remote-copy /path/to/my/remote/copy \
-p ikq02.ethz.ch ikq03.ethz.ch ikq04.ethz.ch
# Configure hosts read from file loadbalancers
% cdist config -f loadbalancers
# Configure hosts read from file web.hosts using 16 parallel jobs
# (beta functionality)
% cdist config -b -j 16 -f web.hosts
# Display banner
cdist banner
# Show help
% cdist --help
# Show Version
% cdist --version
# Enter a shell that has access to emulated types
% cdist shell
% __git
usage: __git --source SOURCE [--state STATE] [--branch BRANCH]
[--group GROUP] [--owner OWNER] [--mode MODE] object_id
# Install ikq05.ethz.ch with debug enabled
% cdist install -vvv ikq05.ethz.ch
# List inventory content
% cdist inventory list -b
# List inventory for specified host localhost
% cdist inventory list -b localhost
# List inventory for specified tag loadbalancer
% cdist inventory list -b -t loadbalancer
# Add hosts to inventory
% cdist inventory add-host -b web1 web2 web3
# Delete hosts from file old-hosts from inventory
% cdist inventory del-host -b -f old-hosts
# Add tags to specifed hosts
% cdist inventory add-tag -b -t europe,croatia,web,static web1 web2
# Add tag to all hosts in inventory
% cdist inventory add-tag -b -t vm
# Delete all tags from specified host
% cdist inventory del-tag -b -a localhost
# Delete tags read from stdin from hosts specified by file hosts
% cdist inventory del-tag -b -T - -f hosts
# Configure hosts from inventory with any of specified tags
% cdist config -b -t web dynamic
# Configure hosts from inventory with all specified tags
% cdist config -b -t -a web dynamic
# Configure all hosts from inventory db
$ cdist config -b -A
ENVIRONMENT
-----------
TMPDIR, TEMP, TMP
Setup the base directory for the temporary directory.
See http://docs.python.org/py3k/library/tempfile.html for
more information. This is rather useful, if the standard
directory used does not allow executables.
CDIST_PATH
Colon delimited list of config directories.
CDIST_LOCAL_SHELL
Selects shell for local script execution, defaults to /bin/sh.
CDIST_REMOTE_SHELL
Selects shell for remote script execution, defaults to /bin/sh.
CDIST_OVERRIDE
Allow overwriting type parameters.
CDIST_ORDER_DEPENDENCY
Create dependencies based on the execution order.
CDIST_REMOTE_EXEC
Use this command for remote execution (should behave like ssh).
CDIST_REMOTE_COPY
Use this command for remote copy (should behave like scp).
CDIST_INVENTORY_DIR
Use this directory as inventory directory.
CDIST_BETA
Enable beta functionality.
CDIST_CACHE_PATH_PATTERN
Custom cache path pattern.
CDIST_CONFIG_FILE
Custom configuration file.
EXIT STATUS
-----------
The following exit values shall be returned:
0 Successful completion.
1 One or more host configurations failed.
AUTHORS
-------
Originally written by Nico Schottelius <nico-cdist--@--schottelius.org>
and Steven Armstrong <steven-cdist--@--armstrong.cc>.
CAVEATS
-------
When operating in parallel, either by operating in parallel for each host
(-p/--parallel) or by parallel jobs within a host (-j/--jobs), and depending
on target SSH server and its configuration you may encounter connection drops.
This is controlled with sshd :strong:`MaxStartups` configuration options.
You may also encounter session open refusal. This happens with ssh multiplexing
when you reach maximum number of open sessions permitted per network
connection. In this case ssh will disable multiplexing.
This limit is controlled with sshd :strong:`MaxSessions` configuration
options. For more details refer to :strong:`sshd_config`\ (5).
When requirements for the same object are defined in different manifests (see
example below), for example, in init manifest and in some other type manifest
and those requirements differ then dependency resolver cannot detect
dependencies correctly. This happens because cdist cannot prepare all objects first
and run all objects afterwards. Some object can depend on the result of type
explorer(s) and explorers are executed during object run. cdist will detect
such case and display a warning message. An example of such a case:
.. code-block:: sh
init manifest:
__a a
require="__e/e" __b b
require="__f/f" __c c
__e e
__f f
require="__c/c" __d d
__g g
__h h
type __g manifest:
require="__c/c __d/d" __a a
Warning message:
WARNING: cdisttesthost: Object __a/a already exists with requirements:
/usr/home/darko/ungleich/cdist/cdist/test/config/fixtures/manifest/init-deps-resolver /tmp/tmp.cdist.test.ozagkg54/local/759547ff4356de6e3d9e08522b0d0807/data/conf/type/__g/manifest: set()
/tmp/tmp.cdist.test.ozagkg54/local/759547ff4356de6e3d9e08522b0d0807/data/conf/type/__g/manifest: {'__c/c', '__d/d'}
Dependency resolver could not handle dependencies as expected.
COPYING
-------
Copyright \(C) 2011-2017 Nico Schottelius. Free use of this software is
granted under the terms of the GNU General Public License v3 or later (GPLv3+).
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