diff --git a/README.md b/README.md
index 3ab5afe..6f89656 100644
--- a/README.md
+++ b/README.md
@@ -10,9 +10,6 @@ An Ansible role that installs [Crayfish](https://github.com/Islandora-CLAW/Crayf
 Available variables are listed below, along with default values:
 
 ```
-# User to install crayfish with (usually the webserver user)
-crayfish_user: www-data
-crayfish_group: www-data
 # Crayfish version to install
 crayfish_version_tag: 0.0.7
 # Crayfish services to install
@@ -30,7 +27,15 @@ crayfish_log_dir: /var/log/islandora
 # Apache configuration directory
 crayfish_apache_conf_dir: /etc/apache2
 ```
+Some OS dependent variables are set in vars/* but can be overridden if desired:
 
+```
+# crayfish_user: www-data
+# httpd_conf_directory: /etc/apache2
+# crayfish_packages:
+#   - ImageMagick
+```
+=======
 `crayfish_db` can be set to: 
  - pgsql 
  - mysql
@@ -41,6 +46,10 @@ There are lots more configuration settings in [defaults/main.yml](defaults/main.
 
 ## Dependencies
 
+* Apache webserver
+* PHP 7
+
+=======
 The module depends on the following. Links are provided to roles known to work with the mdoule, but should be able to work with any role providing the required software:
 * [Apache](https://galaxy.ansible.com/geerlingguy/apache/)
 * [PHP](https://galaxy.ansible.com/geerlingguy/php/)
diff --git a/defaults/main.yml b/defaults/main.yml
index 2ccf9c0..65d693d 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,4 +1,3 @@
-crayfish_user: www-data
 crayfish_version_tag: 0.0.8
 
 crayfish_services:
@@ -6,7 +5,7 @@ crayfish_services:
   - Houdini
   - Milliner
   - Hypercube
-  
+
 crayfish_install_dir: /var/www/html/Crayfish
 
 crayfish_syn_token: islandora
@@ -90,3 +89,8 @@ crayfish_milliner_db_options:
   user: "{{ crayfish_db_user }}"
   password: "{{ crayfish_db_password }}"
 
+# OS Dependent variables set in vars can be overridden here
+# crayfish_user: www-data
+# httpd_conf_directory: /etc/apache2
+# crayfish_packages:
+#   - ImageMagick
diff --git a/tasks/install.yml b/tasks/install.yml
index 1bff231..d29e667 100644
--- a/tasks/install.yml
+++ b/tasks/install.yml
@@ -1,16 +1,15 @@
 ---
 
-- name: Install requisite package repositories
+- name: Add ImageMagick repo (apt)
   apt_repository:
     repo: 'ppa:lyrasis/imagemagick-jp2'
+  when: ansible_os_family == "Debian"
 
 - name: Install requisite packages
-  apt:
-    name: "{{item}}"
+  package:
+    name: "{{ item }}"
     state: present
-  with_items:
-    - tesseract-ocr
-    - imagemagick
+  with_items: "{{ crayfish_packages }}"
 
 - name: Install crayfish code
   git:
@@ -31,7 +30,7 @@
   with_items: "{{ crayfish_services }}"
 
 - name: Get SSL keys
-  include_role: 
+  include_role:
     name: Islandora-Devops.keymaster
   vars:
     ssl_key_public_output_path: "{{ crayfish_install_dir }}/public.key"
@@ -46,22 +45,34 @@
   file:
     path: /var/log/islandora
     state: directory
-    owner: www-data
-    group: www-data
-    mode: "u+rwx,g+r,o-rwx"
+    owner: "{{ crayfish_user }}"
+    group: "{{ crayfish_user }}"
+    mode: "urwx,gr,o-rwx"
+
+- name: Create httpd config directories
+  file:
+    path: "{{httpd_conf_directory}}/{{ item }}/"
+    state: directory
+    owner: "{{ crayfish_user }}"
+    group: "{{ crayfish_user }}"
+    mode: "urwx,gr,o-rwx"
+  with_items:
+    - "conf-available"
+    - "conf-enabled"
+  when: ansible_os_family == "RedHat"
 
 - name: Install crayfish httpd config file
   template:
     src: "httpd/{{item}}.conf.j2"
-    dest: "/etc/apache2/conf-available/{{item}}.conf"
+    dest: "{{httpd_conf_directory}}/conf-available/{{item}}.conf"
     owner: "{{ crayfish_user }}"
     group: "{{ crayfish_user }}"
   with_items: "{{ crayfish_services }}"
 
 - name: Symlink crayfish httpd config file into action
   file:
-    src: "/etc/apache2/conf-available/{{item}}.conf"
-    dest: "/etc/apache2/conf-enabled/{{item}}.conf"
+    src: "{{httpd_conf_directory}}/conf-available/{{item}}.conf"
+    dest: "{{httpd_conf_directory}}/conf-enabled/{{item}}.conf"
     owner: "{{ crayfish_user }}"
     group: "{{ crayfish_user }}"
     state: link
diff --git a/tasks/main.yml b/tasks/main.yml
index 0873ce1..9dcac21 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -1,5 +1,23 @@
 ---
 
+- name: Include OS-specific variables
+  include_vars: "{{ ansible_os_family}}.yml"
+
+- name: Define crayfish_user
+  set_fact:
+    crayfish_user: "{{ __crayfish_user }}"
+  when: crayfish_user is not defined
+
+- name: Define httpd_conf_directory
+  set_fact:
+    httpd_conf_directory: "{{ __httpd_conf_directory }}"
+  when: httpd_conf_directory is not defined
+
+- name: Define OS-specific crayfish_packages to install
+  set_fact:
+    crayfish_packages: "{{ __crayfish_packages }}"
+  when: crayfish_packages is not defined
+
 - include: db-mysql.yml
   tags:
     - crayfish
diff --git a/vars/Debian.yml b/vars/Debian.yml
new file mode 100644
index 0000000..f745111
--- /dev/null
+++ b/vars/Debian.yml
@@ -0,0 +1,6 @@
+---
+
+__crayfish_user: www-data
+__httpd_conf_directory: /etc/apache2
+__crayfish_packages:
+  - imagemagick
diff --git a/vars/RedHat.yml b/vars/RedHat.yml
new file mode 100644
index 0000000..40a1e20
--- /dev/null
+++ b/vars/RedHat.yml
@@ -0,0 +1,6 @@
+---
+
+__crayfish_user: apache
+__httpd_conf_directory: /etc/httpd
+__crayfish_packages:
+  - ImageMagick