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deploying-php-ansible-ansistrano/sections/ansible-crash-course.rst

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+.. page:: titlePage
+
+.. class:: centredtitle
+
+Hosts / Inventories
+
+.. page:: standardPage
+
+hosts.ini
+=========
+
+.. code:: ini
+
+    [webservers]
+    192.168.33.10
+
+    [webservers:vars]
+    ansible_ssh_port=22
+    ansible_ssh_user=opdavies
+
+.. raw:: pdf
+
+  TextAnnotation "Vagrant IP address."
+  TextAnnotation "Supports wildcards and ranges"
+
+hosts.yml
+=========
+
+.. code-block:: yaml
+
+    ---
+    all:
+      children:
+        webservers:
+          hosts:
+            192.168.33.10:
+          vars:
+            ansible_ssh_port: 22
+            ansible_ssh_user: opdavies
+
+.. raw:: pdf
+
+  TextAnnotation "My prefered format."
+  TextAnnotation "More consistency across the project, easier to copy variables from other places such as playbooks."
+
+.. page:: titlePage
+
+.. class:: centredtitle
+
+Ad-hoc Commands
+
+.. page::
+
+.. class:: centredtitle
+
+``ansible all -i hosts.yml
+-m ping``
+
+.. raw:: pdf
+
+  TextAnnotation "Single ad-hoc command."
+  TextAnnotation "-i = inventory"
+  TextAnnotation "-m = module"
+
+.. page:: standardPage
+
+.. code:: json
+
+    webservers | SUCCESS => {
+        "ansible_facts": {
+            "discovered_interpreter_python": "/usr/bin/python"
+        },
+        "changed": false,
+        "ping": "pong"
+    }
+
+.. page:: titlePage
+
+.. class:: centredtitle
+
+``ansible all -i hosts.yml
+-m command
+-a "git pull --chdir=/app"``
+
+.. raw:: pdf
+
+  TextAnnotation "Update a codebase using "git pull""
+  TextAnnotation "-a = (additional) arguments"
+  TextAnnotation "--chdir = change directory"
+
+.. page::
+
+.. class:: centredtitle
+
+``ansible all -i hosts.yml
+-m git
+-a "repo=https://github.com
+/opdavies/dransible
+--chdir=/app"``
+
+.. raw:: pdf
+
+  TextAnnotation "Same example, but using the core "Git" module"
+
+.. page:: titlePage
+
+.. class:: centredtitle
+
+Playbooks
+
+.. page:: standardPage
+
+.. code-block:: yaml
+
+  ---
+  - hosts: webservers
+
+    vars:
+      git_repo: https://github.com/opdavies/dransible
+      project_root_dir: /app
+
+      tasks:
+        - name: Update the code
+          git:
+            repo: '{{ git_repo }}'
+            dest: '{{ project_root_dir }}'
+
+.. raw:: pdf
+
+  TextAnnotation "YAML file"
+  TextAnnotation "Collection of multiple tasks"
+  TextAnnotation "Can add and use variables"
+
+.. page:: titlePage
+
+.. class:: centredtitle
+
+``ansible-playbook main.yml
+-i hosts.yml``
+
+.. raw:: pdf
+
+  TextAnnotation "How do we run a playbook?"
+  TextAnnotation "Use the ansible-playbook command and specify the name of the playbook."