Support Nginx Amplify (#218)

* Support nginx amplify.

* Updated readme.

* Added missing Ansible tags.

* Fixed comments related to PR review.

* Limited installation of Nginx Amplify to the list of supported operating systems, as stated by Nginx's documentation.

* Add nginx tag

Author: ricston-git

README.md

@@ -14,6 +14,7 @@ Requirements
 This role requires Ansible 2.4 or higher and platform requirements are listed
 in the metadata file. (Some older version of the role support Ansible 1.4)
 For FreeBSD a working pkgng setup is required (see: https://www.freebsd.org/doc/handbook/pkgng-intro.html )
+Installation of Nginx Amplify agent is only supported on CentOS, RedHat, Amazon, Debian and Ubuntu distributions.
 
 Install
 -------
@@ -97,6 +98,11 @@ nginx_auth_basic_files:
 
 # Enable Real IP for CloudFlare requests
 nginx_set_real_ip_from_cloudflare: True
+
+# Enable Nginx Amplify
+nginx_amplify: true
+nginx_amplify_api_key: "your_api_key_goes_here"
+nginx_amplify_update_agent: true
 ```
 
 Examples

defaults/main.yml

@@ -72,3 +72,9 @@ nginx_start_at_boot: true
 nginx_set_real_ip_from_cloudflare: False
 nginx_cloudflare_real_ip_header: "CF-Connecting-IP" # See: https://support.cloudflare.com/hc/en-us/articles/200170706-How-do-I-restore-original-visitor-IP-with-Nginx-
 nginx_cloudflare_configuration_name: "cloudflare" # Name for the conf file in the conf.d directory
+
+nginx_amplify: false
+nginx_amplify_api_key: ""
+nginx_amplify_update_agent: false
+nginx_amplify_script_url: "https://github.com/nginxinc/nginx-amplify-agent/raw/master/packages/install.sh"
+nginx_amplify_script_path: "/tmp/install-amplify-agent.sh"

tasks/amplify.yml

@@ -0,0 +1,45 @@
+---
+- name: Check if Amplify Agent is installed
+  package:
+    name: nginx-amplify-agent
+    state: present
+  ignore_errors: true
+  register: amplify_agent_installed
+  tags: [packages]
+
+- name: Install Amplify Agent if not installed
+  block:
+    - name: Download Amplify Agent script
+      get_url:
+        url: "{{ nginx_amplify_script_url }}"
+        dest: "{{ nginx_amplify_script_path }}"
+
+    - name: Run Amplify Agent install.sh script
+      command: "sh /tmp/install-amplify-agent.sh -y"
+      environment:
+        API_KEY: "{{ amplify.api_key }}"
+      become: true
+      become_user: root
+      become_method: sudo
+
+    - name: Remove installation script
+      file:
+        path: "{{ nginx_amplify_script_path }}"
+        state: absent
+
+  when: amplify_agent_installed.failed == true
+  tags: [configuration, packages]
+
+- name: Update Amplify Agent if already installed and update flag is enabled
+  package:
+    name: nginx-amplify-agent
+    state: latest
+  when: amplify_agent_installed.failed == false and nginx_amplify_update_agent == true
+  tags: [packages]
+
+- name: Verify Amplify agent is up and running
+  service:
+    name: amplify-agent
+    state: started
+    enabled: true
+  tags: [service]

tasks/main.yml

@@ -40,6 +40,10 @@
   when: nginx_set_real_ip_from_cloudflare == True
   tags: [configuration, nginx]
 
+- include_tasks: amplify.yml
+  when: nginx_amplify == true and (ansible_distribution in ['RedHat', 'CentOS', 'Debian', 'Amazon', 'Ubuntu'])
+  tags: [amplify, nginx]
+
 - name: Start the nginx service
   service: name={{ nginx_service_name }} state={{nginx_start_service | ternary('started', 'stopped')}} enabled={{nginx_start_at_boot}}
   when: nginx_installation_type in nginx_installation_types_using_service and nginx_daemon_mode == "on"