haproxy: mount the docker socket

tasks/haproxy-docker-service.yml

@@ -1,4 +1,14 @@
 ---
+- name: Manage the composition of haproxy as a docker swarm service
+  block:
+  - name: Create the local haproxy configuration directory
+    file: dest=/etc/haproxy state=directory mode='0755'
+
+  - name: Install a bare haproxy configuration if there's none
+    copy: src=haproxy-sample.cfg dest=/etc/haproxy/haproxy.cfg mode='0644' force=no
+
+  tags: [ 'haproxy', 'docker_haproxy', 'docker_swarm', 'docker' ]
+
 - name: Manage the composition of haproxy as a docker swarm service
   block:
   - name: Create the destination directory of the haproxy docker compose file
@@ -7,12 +17,6 @@
   - name: Install the docker compose file
     template: src=haproxy-docker-stack.yml.j2 dest={{ haproxy_docker_compose_dir }}/docker-haproxy-stack.yml mode='0644'
 
-  - name: Create the local haproxy configuration directory
-    file: dest=/etc/haproxy state=directory mode='0755'
-
-  - name: Install a bare haproxy configuration if there's none
-    copy: src=haproxy-sample.cfg dest=/etc/haproxy/haproxy.cfg mode='0644' force=no
-
   - name: Run the docker compose file to start the service
     docker_stack:
       name: haproxy

templates/haproxy-docker-stack.yml.j2

@@ -6,6 +6,7 @@ services:
     volumes:
       - {{ haproxy_cert_dir }}:{{ haproxy_cert_dir }}:ro
       - /etc/haproxy:/usr/local/etc/haproxy:ro
+      - /var/run/docker.sock:/var/run/docker.sock
     ports:
       - target: {{ haproxy_default_port }}
         published: {{ haproxy_default_port }}