Merge remote branch 'nico/master'
This commit is contained in:
commit
741275e967
21 changed files with 147 additions and 81 deletions
1
Makefile
1
Makefile
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@ -36,3 +36,4 @@ pub:
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man:
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echo $(MANSRC)
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a2x -f manpage --no-xmllint doc/man/cdist-stages.text
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echo man ./doc/man/cdist-stages.7
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@ -13,7 +13,6 @@ it ticks differently:
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* cdist sticks completly to the KISS (keep it simple and stupid) paradigma
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* cdist's core is very small (currently around 400 lines of code)
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* There is only one type to extend cdist called ***type***.
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*
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* cdist is UNIX
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* It reuses existing tools like cat, find, mv, ...
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* cdist's documentation is bundled as manpages
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18
TODO-1.0
18
TODO-1.0
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@ -11,7 +11,7 @@ x run initial manifest (stage 2)
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x Create configuration tree from manifest
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x write binaries, which create the tree when called from manifest (cdist_tree_wrapper)
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- be able to run manifest of types (stage 3)
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x be able to run manifest of types (stage 3)
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x Parse configuration tree/objects recursively
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x can/may types modify tree?
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-> yes, of everything a type created itself!
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@ -22,13 +22,6 @@ x run initial manifest (stage 2)
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x rename $__object_dir to $__object_base_dir
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x use $type/manifest instead of $type/init
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x find $object_id in recursive runner (before merge)
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- DOC document "cd $__object_dir, before running manifest" in doc/man/cdist-types.text
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- DOC document that $type/manifest is executed for every object/instance
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- DOC: types can always access
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__cdist_out_objects, __cdist_out_explorers,
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__cdist_out_execs
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--> create cdist-variables document?
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x generate code to be executed on clients (stage 4)
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x for one object
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@ -41,6 +34,7 @@ x execute code on client (stage 5)
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- file (with directory)
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- package
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- doc cleanup for 1.0:
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- ensure every file in bin/ has a correspondent manpage
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- cdist manpage (main manpage)
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- cleanup following man + their tree:
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- cdist-language [CLEANUP AND REMOVE]
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@ -72,3 +66,11 @@ x execute code on client (stage 5)
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- create doc/dev/HACKERS_README
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- Add install target to Makefile
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- create cdist-config-init to create basic tree
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- cdist-type integration!
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- DOC document "cd $__object_dir, before running manifest" in doc/man/cdist-types.text
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- DOC document that $type/manifest is executed for every object/instance
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- DOC: types can always access __cdist_out_objects, __cdist_out_explorers, __cdist_out_execs
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--> create cdist-variables document?
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- include generation in makefile
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@ -21,8 +21,6 @@
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# Print configuration directories - helper for all other scripts
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#
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echo teeeeeeeeeeeeeeeeeees
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# Fail if something bogus is going on
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set -u
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@ -181,6 +179,13 @@ __cdist_object_source()
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cat "${object_dir}/$__cdist_name_object_source"
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}
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__cdist_exec_fail_on_error()
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{
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sh -e "$@"
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[ "$?" -eq 0 ] || __cdist_exit_err "Error: $1 exited non-zero."
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}
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__cdist_tmp_removal()
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{
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rm -rf "${__cdist_tmp_dir}"
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@ -41,17 +41,6 @@ if [ ! -x "${__cdist_manifest}" ]; then
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__cdist_exit_err "${__cdist_manifest} needs to be executable."
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fi
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mkdir -p "${__cdist_output_dir}"
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mkdir -p "${__cdist_output_dir}" || __cdist_exit_err "Cannot create output dir ${__cdist_output_dir}"
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# Catch errors ourselves now
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set +e
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# Ensure manifest fails if any error exists - FIXME: redundant, cdist-object-codegen
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(
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set -e
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. "${__cdist_manifest}"
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); ret=$?
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if [ "$ret" -ne 0 ]; then
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__cdist_exit_err "Error: ${__cdist_manifest} exited non-zero."
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fi
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__cdist_exec_fail_on_error "${__cdist_manifest}"
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@ -54,19 +54,5 @@ if [ -x "$gencode" ]; then
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eof
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# Catch errors ourself now
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set +e
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(
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# Ensure manifest fails if something within manifest fails
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# And not all manifests need to include set -e themselves
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set -e
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. "$gencode"
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); ret=$?
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else
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ret=0
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fi
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if [ "$ret" -ne 0 ]; then
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__cdist_exit_err "Error: $gencode exited non-zero"
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__cdist_exec_fail_on_error "$gencode"
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fi
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40
bin/cdist-quickstart
Executable file
40
bin/cdist-quickstart
Executable file
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@ -0,0 +1,40 @@
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#!/bin/sh
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#
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# 2010-2011 Nico Schottelius (nico-cdist at schottelius.org)
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#
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# This file is part of cdist.
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#
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# cdist is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# cdist is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with cdist. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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# Give the user an introduction into cdist
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#
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. cdist-config
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set -eu
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__prompt()
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{
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echo "Press enter to continue or ctrl-c to abort"
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echo "[Enter]"
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read answer
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}
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cat << eof
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Welcome to cdist-quickstart, the interactive guide to cdist!
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After you press enter, I'll create the basic directories for you.
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eof
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1
doc/dev/logs/README
Normal file
1
doc/dev/logs/README
Normal file
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@ -0,0 +1 @@
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Logfiles of discussions
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@ -1,5 +1,42 @@
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## How to use cdist?
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cdist-quickstart(1)
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===================
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Nico Schottelius <nico-cdist--@--schottelius.org>
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NAME
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----
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cdist-quickstart - Make use of cinit in 5 minutes
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DESCRIPTION
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-----------
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This document helps you to take the first steps with cdist.
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We'll begin to configure the host "localhost" to have two files
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in place, /etc/DO-NOT-CHANGE and /root/CDIST-ENABLED-HOST, which
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both are used to warn other sysadmins that this system is managed
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by configuration management and manual changes may get overwritten.
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Begin to execute cdist-quickstart, it will show you the steps it
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takes and explains what it does:
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% cdist-quickstart
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mkdir -p /etc/cdist/manifests
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# Create
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Cdist uses
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kgives you an impression of
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0. Create a host specification (/etc/cdist/hosts/**hostname**)
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0. Add functionalilty to add
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0. Run ***cdist-apply***
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SEE ALSO
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--------
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cdist-config-layout(7)
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COPYING
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-------
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Copyright \(C) 2010-2011 Nico Schottelius. Free use of this software is
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granted under the terms of the GNU General Public License version 3 (GPLv3).
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## How to use cdist?
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@ -5,76 +5,82 @@ Nico Schottelius <nico-cdist--@--schottelius.org>
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NAME
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----
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cdist-stages - How the configuration is built
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cdist-stages - Stages used during configuration deployment
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DESCRIPTION
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-----------
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Starting the execution of deployment with cdist-deploy-to(1),
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cdist passes through different stages, each can be triggered
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and debugged on its own. Reading the source of the
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cdist-deploy-to script shous the binaries being responsible
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for each stage.
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Starting the execution of deployment with cdist-deploy-to(1), cdist passes
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through different stages, each can be triggered and debugged on its own.
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Reading the source of the cdist-deploy-to executable shous the scripts
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responsible for each stage.
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STAGE 1: TARGET INFORMATION RETRIEVAL
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--------------------------------------
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In this stage information is collected about target using
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so called explorers.
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Every existing explorer is run on the target and the output
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of all explorers are copied back into the local cache.
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The results can be used by manifests and types.
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In this stage information is collected about target using so called explorers.
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Every existing explorer is run on the target and the output of all explorers
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are copied back into the local cache. The results can be used by manifests and
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types.
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Related manpages are cdist-explorers(7) and cdist-cache(7).
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STAGE 2: RUN THE INITIAL MANIFEST
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---------------------------------
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The initial manifest, which should be used for mappings
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of hosts to types, is executed.
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This stage creates objects in a cconfig database that
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contains as defined in the manifest for the specific host.
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In this stage, no conflicts may occur, i.e. no object of
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the same type with the same id may be created.
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The initial manifest, which should be used for mappings of hosts to types,
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is executed. This stage creates objects in a cconfig database that contains
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the objects as defined in the manifest for the specific host. In this stage,
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no conflicts may occur, i.e. no object of the same type with the same id may
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be created.
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Related manpages are cdist-manifest-init(1), cdist-manifests(7) and
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cdist-config-layout(7).
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STAGE 3: EXECUTION OF TYPES
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---------------------------
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Every object is checked whether its type has an init
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script (see cdist-types(7)). If the type of the object
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has an init script, it is run. This init script may
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generate additional objects.
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Every object is checked whether its type has a manifest file. If the type has
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a manifest file and it is executable, it will be executed. The manifest script
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may generate and change the created objects. In other words, one type can reuse
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other types.
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For instance the object __apache/www.test.ch is of
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type __apache, which may contain an init script, which
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creates new objects of type __file.
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For instance the object __apache/www.test.ch is of type __apache, which may
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contain an manifest script, which creates new objects of type __file.
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The newly created objects are merged back into the existing tree. No conflicts
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may occur during the merge. A conflict would mean that two different objects
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try to create the same object, which indicates a broken configuration.
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Related manpage are cdist-types(7) and cdist-manifest-run-all(1).
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The newly created objects are merged back into
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the existing tree. No conflicts may occur during
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the merge. A conflict would mean that two different
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objects try to create the same object, which indicates a
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broken configuration.
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STAGE 4: CODE GENERATION
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------------------------
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The "gencode" binary of the types for every existing object is
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called to generate code that will be executed on the target host.
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In this stage for every created objects its type is checked whether it has a
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gencode script. If the type has a gencode script and it is executable it will
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be executed. This executable should create code to be executed on the target
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on stdout. If the gencode executable fails, it must print diagnostic messages
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on stderr and exit non-zero.
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This binary should create code to be executed on the target on stdout.
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Related manpages are cdist-types-gencode(7), cdist-gencode(1) and
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cdist-gencode-all(1).
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If the gencode binary fails, it must print diagnostic messages on stderr
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and exit non-zero.
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A description of what the generated code may/must/should
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do can be found in cdist-types-gencode(7).
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STAGE 5: CODE EXECUTION
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||||
-----------------------
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The resulting code is transferred to the target host and executed,
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the run of cdist-deploy-to(1) ends.
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The resulting code from the previous stage is transferred to the target host
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and executed there to apply the configuration changes,
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Related manpages are cdist-exec-transfer(1) and cdist-exec-run(1).
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SUMMARY
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||||
-------
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If, and only if, all the stages complete without an errors, the configuration
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will be applied to the target. Each stage can also be run individually, though
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dependencies for each stage must be fulfilled and thus the stages must be run
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||||
in correct order.
|
||||
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||||
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||||
SEE ALSO
|
||||
|
|
Loading…
Reference in a new issue