Refactor Proxied Hosts

ansible/eru.yml

@@ -2,6 +2,7 @@
 - hosts: consul
 - hosts: mongodb
 - hosts: redis
+- hosts: socket-server-proxy
 
 - hosts: eru
   vars_files:
@@ -10,9 +11,7 @@
   - { role: notify, tags: [ notify ] }
   - { role: builder, tags: [ build ] }
   - role: container_start
-
-- hosts: socket-server-proxy
-  vars_files:
-  - group_vars/alpha-eru.yml
-  roles:
-  - role: eru
+  - role: nginx-proxied-service
+    nginx_host: "{{ groups['socket-server-proxy'][0] }}"
+    target_ip_address: "{{ hostvars[groups['eru'][0]]['ansible_default_ipv4']['address'] }}"
+    templates: [ 11-eru-server.conf ]

ansible/roles/nginx-proxied-service/tasks/main.yml

@@ -0,0 +1,97 @@
+---
+# these are pretty hacky, but it should work
+# Get port information from the hosted service
+- name: get eru ports
+  when: name == "eru"
+  tags: [ configure_proxy, deploy ]
+  become: true
+  shell: |
+    for c in $(docker ps | awk '/eru/{ print $1 }'); do
+      docker port $c 5501 | cut -d ':' -f 2
+      docker port $c 5502 | cut -d ':' -f 2
+    done
+  args:
+    executable: /bin/bash
+  register: eru_target_ports
+
+- name: get socket server ports
+  when: name == "api-socket-server"
+  tags: [ configure_proxy, deploy ]
+  become: true
+  shell: |
+    for c in $(docker ps | awk '/api-socket-server/{ print $1 }'); do
+      docker port $c 80 | cut -d ':' -f 2
+    done
+  args:
+    executable: /bin/bash
+  register: socket_target_ports
+
+# everything from this point on is deligated to the nginx host
+
+- name: print target ports
+  delegate_to: "{{ nginx_host }}"
+  tags: [ configure_proxy, deploy ]
+  debug:
+    msg: |
+      eru ports -- {{ eru_target_ports }}
+      socket ports -- {{ socket_target_ports }}
+
+- name: print target IP address
+  delegate_to: "{{ nginx_host }}"
+  tags: [ configure_proxy, deploy ]
+  debug:
+    msg: ip -- {{ target_ip_address }}
+
+- name: assert nginx config directory
+  delegate_to: "{{ nginx_host }}"
+  tags: [ configure_proxy, deploy ]
+  become: yes
+  file:
+    state: directory
+    dest: /etc/nginx
+
+- name: assert nginx sites-available directory
+  delegate_to: "{{ nginx_host }}"
+  tags: [ configure_proxy, deploy ]
+  become: yes
+  file:
+    state: directory
+    dest: /etc/nginx/sites-available
+
+- name: assert nginx sites-enable directory
+  delegate_to: "{{ nginx_host }}"
+  tags: [ configure_proxy, deploy ]
+  become: yes
+  file:
+    state: directory
+    dest: /etc/nginx/sites-enable
+
+- name: put configuration in place
+  delegate_to: "{{ nginx_host }}"
+  tags: [ configure_proxy, deploy ]
+  become: yes
+  template:
+    src: "{{ item }}"
+    dest: /etc/nginx/sites-available/{{ item }}
+  with_items: "{{ templates }}"
+
+- name: link configuration to enable
+  delegate_to: "{{ nginx_host }}"
+  tags: [ configure_proxy, deploy ]
+  become: yes
+  file:
+    state: link
+    dest: /etc/nginx/sites-enabled/{{ item }}
+    src: /etc/nginx/sites-available/{{ item }}
+  with_items: "{{ templates }}"
+
+- name: reload nginx
+  delegate_to: "{{ nginx_host }}"
+  tags: [ configure_proxy, deploy ]
+  become: yes
+  shell: >
+    docker ps |
+    awk '/nginx/{ print $1 }' |
+    xargs -n 1 docker kill --signal SIGHUP
+  args:
+    executable: /bin/bash

ansible/roles/socket-proxy/templates/01-socket-server.conf → ansible/roles/nginx-proxied-service/templates/01-socket-server.conf

@@ -5,8 +5,8 @@ map $http_upgrade $connection_upgrade {
 
 upstream socketserver {
   sticky;
-  {% for port in ports.stdout_lines -%}
-  server {{ socket_server_hostname }}:{{ port }};
+  {% for port in socket_target_ports.stdout_lines -%}
+  server {{ target_ip_address }}:{{ port }};
   {% endfor %}
 }
 

ansible/roles/eru/templates/11-eru-server.conf → ansible/roles/nginx-proxied-service/templates/11-eru-server.conf

@@ -35,7 +35,7 @@ server {
 
   location / {
     expires 300;
-    proxy_pass http://{{ eru_server_hostname }}:{{ ports.stdout_lines[0] | trim }};
+    proxy_pass http://{{ target_ip_address }}:{{ eru_target_ports.stdout_lines[0] | trim }};
     proxy_set_header Host $host;
     proxy_set_header x-real-ip $remote_addr;
     proxy_set_header x-forwarded-for $proxy_add_x_forwarded_for;
@@ -44,7 +44,7 @@ server {
   }
 
   location /graphql {
-    proxy_pass http://{{ eru_server_hostname }}:{{ ports.stdout_lines[1] | trim }};
+    proxy_pass http://{{ target_ip_address }}:{{ eru_target_ports.stdout_lines[1] | trim }};
     proxy_set_header Host $host;
     proxy_set_header x-real-ip $remote_addr;
     proxy_set_header x-forwarded-for $proxy_add_x_forwarded_for;

ansible/socket-server.yml

@@ -7,6 +7,7 @@
 - hosts: redis
 - hosts: swarm-manager
 - hosts: consul
+- hosts: socket-server-proxy
 
 - hosts: socket-server
   vars_files:
@@ -22,10 +23,7 @@
   - { role: tls-client, tls_service: mongodb, tags: [ tls ] }
   - { role: datadog, tags: [ datadog ] }
   - { role: container_start, number_of_containers: 8 }
-
-- hosts: socket-server-proxy
-  vars_files:
-    - group_vars/alpha-proxy-socket-server.yml
-  roles:
-  - role: socket-proxy
-  - role: container_restart
+  - role: nginx-proxied-service
+    nginx_host: "{{ groups['socket-server-proxy'][0] }}"
+    target_ip_address: "{{ hostvars[groups['socket-server'][0]]['ansible_default_ipv4']['address'] }}"
+    templates: [ 01-socket-server.conf ]