forked from ungleich-public/cdist
Nico Schottelius
commit
2c54e91df1
5 changed files with 48 additions and 25 deletions
8
Makefile
8
Makefile
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@ -20,6 +20,13 @@
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A2XM=a2x -f manpage --no-xmllint -a encoding=UTF-8
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A2XH=a2x -f xhtml --no-xmllint -a encoding=UTF-8
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# Create cross-links in html man pages
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# We look for something like "cdist-type(7)" and make a href out of it
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# The first matching group is the man page name and the second group
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# is the man page section (1 or 7). The first three lines of the input
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# (xml, DOCTYPE, head tags) are ignored, since the head tags contains
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# the title of the page and should not contain a href.
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CROSSLINK=sed --in-place '1,3!s/\([[:alnum:]_-]*\)(\([17]\))/<a href="..\/man\2\/\1.html">&<\/a>/g'
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helper=./bin/build-helper
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MANDIR=docs/man
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@ -86,6 +93,7 @@ MANSTATICALL=$(MANSTATICMAN) $(MANSTATICHTML)
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# Creating the type html page
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%.html: %.text
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$(A2XH) $^
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$(CROSSLINK) $@
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man: $(MANTYPEALL) $(MANREFALL) $(MANSTATICALL)
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@ -26,7 +26,7 @@ cdist supports different subcommands as explained below.
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GENERAL
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-------
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All commands except the following options:
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All commands accept the following options:
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-d, --debug::
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Set log level to debug
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@ -34,7 +34,7 @@ All commands except the following options:
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-h, --help::
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Show the help screen
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-v, --verbose:
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-v, --verbose::
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Set log level to info, be more verbose
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-V, --version::
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@ -72,10 +72,10 @@ Configure one or more hosts
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-s, --sequential::
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Operate on multiple hosts sequentially
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--remote-copy REMOTE_COPY:
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--remote-copy REMOTE_COPY::
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Command to use for remote copy (should behave like scp)
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--remote-exec REMOTE_EXEC:
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--remote-exec REMOTE_EXEC::
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Command to use for remote execution (should behave like ssh)
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SHELL
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@ -25,7 +25,7 @@ location.
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For starters, having cdist (which includes the configuration database) on
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your notebook should be fine.
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Additionally an external copy of the git repository the configuration
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relies in is recommended, for use as backup as well to allow easy collaboration
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relies on is recommended, for use as backup as well as to allow easy collaboration
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with others.
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For more sophisticated setups developing cdist configurations with multiple
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@ -13,7 +13,7 @@ DESCRIPTION
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Manifests are used to define which objects to create.
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Objects are instances of **types**, like in object oriented programming languages.
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An object is represented by the combination of
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**type + slash + object name**: **__file/etc/cdist-configured** is an
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**type + slash + object name**: **\__file/etc/cdist-configured** is an
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object of the type ***__file*** with the name ***etc/cdist-configured***.
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All available types can be found in the **cdist/conf/type/** directory,
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@ -29,7 +29,7 @@ at an example:
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__package apache2 --state absent
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# Same with the __directory type
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__directory /tmp/cdist --state present
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__directory /tmp/cdist --state present
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--------------------------------------------------------------------------------
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These two lines create objects, which will later be used to realise the
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@ -89,7 +89,7 @@ SPLITTING UP THE INITIAL MANIFEST
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---------------------------------
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If you want to split up your initial manifest, you can create other shell
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scripts in **cdist/conf/manifest/** and include them in **cdist/conf/manifest/init**.
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Cdist provides the environment variable ***__manifest*** to reference to
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Cdist provides the environment variable ***__manifest*** to reference
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the directory containing the initial manifest (see cdist-reference(7)).
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The following example would include every file with a **.sh** suffix:
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@ -110,24 +110,39 @@ setup the variable "require" to contain the requirements. Multiple
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requirements can be added white space separated.
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--------------------------------------------------------------------------------
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# No dependency
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__file /etc/cdist-configured
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# Require above object
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require="__file/etc/cdist-configured" __link /tmp/cdist-testfile \
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--source /etc/cdist-configured --type symbolic
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# Require two objects
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require="__file/etc/cdist-configured __link/tmp/cdist-testfile" \
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__file /tmp/cdist-another-testfile
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1 # No dependency
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2 __file /etc/cdist-configured
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3
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4 # Require above object
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5 require="__file/etc/cdist-configured" __link /tmp/cdist-testfile \
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6 --source /etc/cdist-configured --type symbolic
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7
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8 # Require two objects
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9 require="__file/etc/cdist-configured __link/tmp/cdist-testfile" \
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10 __file /tmp/cdist-another-testfile
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--------------------------------------------------------------------------------
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Above the "require" variable is only set for the command that is
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immediately following it. Dependencies should allways be declared that way.
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On line 4 you can see that the instantion of a type "__link" object needs
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the object "__file/etc/cdist-configured" to be present, before it can proceed.
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This also means that the "__link" command must make sure, that either
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"__file/etc/cdist-configured" allready is present, or, if it's not, it needs
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to be created. The task of cdist is to make sure, that the dependency will be
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resolved appropriately and thus "__file/etc/cdist-configured" be created
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if necessary before "__link" proceeds (or to abort execution with an error).
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All objects that are created in a type manifest are automatically required
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from the type that is calling them. This is called "autorequirement" in
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cdist jargon.
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You can find an more in depth description of the flow execution of manifests
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in cdist-stages(7) and of how types work in cdist-type(7).
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CREATE DEPENDENCIES FROM EXECUTION ORDER
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-----------------------------------------
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You can tell cdist to execute all types in the order in which they are created
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@ -149,10 +164,10 @@ If you whish, you can setup the environment variable CDIST_OVERRIDE
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(any value or even empty is ok) to tell cdist, that this object override is
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wanted and should be accepted.
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ATTENTION: Only use this feature if you are 100% sure in which order
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cdist encounter the affected objects, otherwhise this results
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into an undefined situation.
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cdist encounters the affected objects, otherwhise this results
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in an undefined situation.
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If CDIST_OVERRIDE and CDIST_ORDER_DEPENDENCY is set for an object,
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If CDIST_OVERRIDE and CDIST_ORDER_DEPENDENCY are set for an object,
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CDIST_ORDER_DEPENDENCY will be ignored, because adding a dependency in case of
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overrides would result in circular dependencies, which is an error.
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@ -198,7 +213,7 @@ How to override objects:
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--------------------------------------------------------------------------------
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# for example in the inital manifest
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# reate user account foobar with some hash for password
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# create user account foobar with some hash for password
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__user foobar --password 'some_fancy_hash' --home /home/foobarexample
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# ... many statements and includes in the manifest later ...
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@ -210,8 +225,8 @@ __user foobar --password 'some_other_hash'
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# this tells cdist, that you know that this is an override and should be accepted
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CDIST_OVERRIDE=yes __user foobar --password 'some_other_hash'
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# its only an override, means the parameter --home is not touched
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# and stay at the original value of /home/foobarexample
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# it's only an override, means the parameter --home is not touched
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# and stays at the original value of /home/foobarexample
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--------------------------------------------------------------------------------
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Dependencies defined by execution order work as following:
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@ -25,7 +25,7 @@ to use.
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HOW TO USE A TYPE
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-----------------
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You can use types from the initial manifest or the type manifest like a
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normal command:
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normal shell command:
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--------------------------------------------------------------------------------
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# Creates empty file /etc/cdist-configured
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