wordpress_ultrastack

Ansible Role: Wordpress UltraStack

Modular Ansible Role for deploying and configuring WordPress featuring InMotion's optimized UltraStack configuration

Requirements

CentOS 7.x or later
Debian 9 or later
Ubuntu 16.04 LTS or later

Dependencies

Required

- role: inmotionhosting.apache
- role: inmotionhosting.mysql
- role: inmotionhosting.php_fpm
- role: inmotionhosting.wordpress
- collection: community.general
- collection: ansible.posix

Optional

The following roles are required when use_ultrastack: true

- role: inmotionhosting.nginx_proxy
- role: inmotionhosting.redis

What is UltraStack?

UltraStack is a set of server configurations created by InMotion Hosting technical staff focused on optimization and performance for specific content management systems.

What is included?

NGINX

NGINX is part of UltraStack, serving as a reverse-proxy and cache to significantly speed up your website requests. Page cache with a short TTL is utilized to allow efficient handling of a large influx of traffic and cache rules to prevent it from caching logged in/cookie'd users.

PHP-FPM

PHP-FPM (FastCGI Process Manager) is an alternative to conventional PHP implementation. Each pool of PHP-FPM works as its own full instance of PHP complete with it's own configs, limits, and resources.

Redis

Redis, short for Remote Dictionary Server, provides object caching for SQL and other server processes within a database and utilizes much faster system memory instead of using server hard drive resources. This allows for taking those intensive common database queries and caching them which allows for a significantly content delivery.

Role Variables

Available variables are listed below with their default values (you can also see defaults/main.yml)

Variable	Definition
use_ultrastack	By default, the inclusion of this role will enable the UltraStack configuration. Switching this to false will prevent the installation of Nginx and Redis.
use_redis	Enable/disable Redis installation
site_domain	The domain to associate with service configuration.
ultrastack_w3tc_settings	If installing on top of WordPress, configure additional W3TC settings.
nginx_ratelimit_enable	Enable rate limiting on nginx_ratelimit_paths
nginx_ratelimit_burst	Burst setting on nginx_ratelimit_zone
nginx_ratelimit_nodelay	Enable or disable Nginx's delay setting on nginx_ratelimit_zone
nginx_ratelimit_zone	Name of the Nginx rate limit zone
nginx_ratelimit_paths	Regex paths to rate limit
nginx_cache_bypass_paths	Regex paths on which to enable cache bypass
nginx_cache_purge_enable	Switch to enable location block to purge cache using ngx_cache_purge modulle
nginx_vts_enable	Switch to enable NGINX Configuration for vts module
nginx_cache_profile	Load a pre-configured NGINX Cache Profile

Note: If using the UltraStack optimizations its highly recommended to use the w3-total-cache plugin.

Example Playbook

- hosts: wordpress_ultrastack
  roles:
    - role: inmotionhosting.apache
    - role: inmotionhosting.mysql
    - role: inmotionhosting.php_fpm
    - role: inmotionhosting.wordpress
    # nginx_proxy and redis are included conditionally from within the
    # wordpress_ultrastack role
    - role: inmotionhosting.wordpress_ultrastack
      vars:
        use_ultrastack: true