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--- devops:puppet [2016/04/18 09:29] – [Classes Metaparameter] skipidar
+++ devops:puppet [2023/11/01 07:15] (current) – ↷ Page moved from camunda:devops:puppet to devops:puppet skipidar
@@ Line 1: / Line 1: @@
 ===== Puppet =====
-a
+The Learning VM TUtorial is here: https://kjhenner.gitbooks.io/puppet-quest-guide/content/quests/application_orchestrator.html
+Te learning VM is available here: https://puppet.com/download-learning-vm
 ==== Glossary ====
@@ Line 184: / Line 188: @@
   * Use **define** keyword instead of **class**
   * **$title** is a special variable, which must be unique on a node and is mandatory
-  *
+  * Binding of parameter variables ($content, $password) to values happens in parallel, meaning that you cannot use the value of one parameter to set another. The exception is the $title variable.
@@ Line 320: / Line 324: @@
 defines the default node configuration.
+==== Node setup ====
+Puppet master provides a bash script for setting up nodes:
+<code>
+curl -k https://<master.example.com>:8140/packages/current/install.bash | sudo bash
+</code>
+Puppet MASTER keeps signed certificates of each Node, which is a part of the infrastructure.
+To involve a node - sighn its certificate.
+List all unsigned certificates of Nodes. Executable on master.
+<code>
+puppet cert list
+</code>
+Sign a certificate of node named **webserver.learning.puppetlabs.vm **
+<code>
+puppet cert sign webserver.learning.puppetlabs.vm
+</code>
 ==== Variables ====
@@ Line 650: / Line 673: @@
 yamldir = /opt/puppetlabs/puppet/cache/yaml
 </code>
+===== Orchestration =====
+Details are here: https://kjhenner.gitbooks.io/puppet-quest-guide/content/quests/application_orchestrator.html
+Orchestration allows to install dependent applications in the right order.
+It works as following:
+  - setup the node to know the orchestrator
+  - create an Application, which may combine multiple nodes to a single semantical unit (MySQL Server, Apache with PHP application )
+    - setup orchestrator user with the rights
+    - setup an **artificial, public resource** to share the data between nodes (**in ruby**)
+    - define, which node **produces** data to fill artificial, public resource. Which node consumes data from artificial, public resource.
+    - declare the resource
+    - in site.pp declare - which part of the application will be installed on which node.
+{{http://i520.photobucket.com/albums/w327/schajtan/2016-04-25_14-27-49_zpsphhbuy9w.png}}