Install the container as a stack. Install a bare configuration

files/haproxy-sample.cfg

@@ -0,0 +1,32 @@
+global
+    log          fd@2 local2
+    chroot       /var/lib/haproxy
+    pidfile      /var/run/haproxy.pid
+    maxconn      4000
+    user         haproxy
+    group        haproxy
+    stats socket /var/lib/haproxy/stats expose-fd listeners
+    master-worker
+
+resolvers docker
+    nameserver dns1 127.0.0.11:53
+    resolve_retries 3
+    timeout resolve 1s
+    timeout retry   1s
+    hold other      10s
+    hold refused    10s
+    hold nx         10s
+    hold timeout    10s
+    hold valid      10s
+    hold obsolete   10s
+
+frontend  fe_web
+    bind *:80
+    use_backend stat if { path -i /my-stats }
+
+backend stat
+    stats enable
+    stats uri /my-stats
+    stats refresh 15s
+    stats show-legends
+    stats show-node

tasks/haproxy-docker-service.yml

@@ -2,17 +2,23 @@
 - name: Manage the composition of haproxy as a docker swarm service
   block:
   - name: Create the destination directory of the haproxy docker compose file
-    file: dest={{ haproxy_docker_compose_dir }} state=directory
+    file: dest={{ haproxy_docker_compose_dir }} state=directory mode='0755'
 
   - name: Install the docker compose file
-    template: src=haproxy-docker-compose.yml.j2 dest={{ haproxy_docker_compose_dir }}/docker-compose.yml
+    template: src=haproxy-docker-compose.yml.j2 dest={{ haproxy_docker_compose_dir }}/docker-compose.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_compose:
-      project_src: '{{ haproxy_docker_compose_dir }}'
+    docker_stack:
+      name: haproxy
       state: present
-      pull: yes
-      recreate: smart
+      compose:
+        - '{{ haproxy_docker_compose_dir }}/docker-compose.yml'
     run_once: True
 
   when: docker_swarm_manager_main_node is defined and docker_swarm_manager_main_node | bool

templates/haproxy-docker-compose.yml.j2

@@ -1,11 +1,11 @@
-version: '3.8'
+version: '3.6'
 
 services:
   haproxy:
     image: haproxytech/haproxy-debian:{{ haproxy_version }}
     volumes:
       - {{ haproxy_cert_dir }}:{{ haproxy_cert_dir }}:ro
-      - /etc/haproxy:/etc/haproxy:ro
+      - /etc/haproxy:/usr/local/etc/haproxy:ro
     ports:
       - target: {{ haproxy_default_port }}
         published: {{ haproxy_default_port }}
@@ -15,27 +15,16 @@ services:
         published: {{ haproxy_ssl_port }}
         protocol: tcp
         mode: host
-{% if docker_swarm_haproxy_networks is defined %}
-    networks:
-{% for net in docker_swarm_haproxy_networks %}
-      - {{ net }}
-{% endfor %}
-{% endif %}
-{% if docker_swarm_haproxy_additional_services is defined %}
-{% for net in docker_swarm_haproxy_additional_services %}
-      - {{ net.service_overlay_network }}
-{% endfor %}
-{% endif %}
+    dns: [127.0.0.11]
     deploy:
       mode: replicated
       replicas: 1
-      endpoint_mode: dnsrr
       placement:
         constraints: [node.role == manager]
       restart_policy:
-        condition: unless-stopped
-        delay: 5s
-        max_attempts: 3
+        condition: on-failure
+        delay: 20s
+        max_attempts: 5
         window: 120s
       resources:
         limits:
@@ -45,5 +34,6 @@ services:
           cpus: '1.0'
           memory: 384M
 {% if docker_log_to_journal %}
-    log_driver: 'journald'
+    logging:
+      driver: 'journald'
 {% endif %}