Ansible Lab #03 - App Deployment

實習重點

Application deployment

• Source: download tar.gz or git?
• Binary: download or via package manager?
• Permission
• Customized configuration?

Pursue for idempotence

• Register variables
• Conditions (when in this example)
• Handlers (to be discussed later in Lab #05)

Customized configuration

Copy configuration files...

• as-is
• variable substitution with Jinja2 template system

Directory layout

See: Ansible official document - Best Practices

用到的 module(s)

• Network modules / get_url: Downloads files from HTTP, HTTPS, or FTP to node.

• Files modules / unarchive: Unpacks an archive after (optionally) copying it from the local machine.

• Commands modules / command: Executes a command on a remote node.

• Files modules / template: Templates a file out to a remote server.

• File modules / lineinfile: Ensure a particular line is in a file, or replace an existing line using a back-referenced regular expression.

• System modules / service: Manage services.

想接受挑戰嗎？

Pursue for idempotence with handlers:

• Handler for "reload nginx"
• Handler for "reload php-fpm"

Full details are to be discussed later in Lab #05.