Manage the portainer network completely outside of the compose file.

defaults/main.yml

@@ -17,7 +17,7 @@ docker_swarm_portainer_hostname: 'portainer-swarm.example.com'
 docker_swarm_portainer_additional_constraints: []
 #  - 'node.hostname != docker01'
 
-docker_swarm_portainer_network: 'agent_network'
+docker_swarm_portainer_network: 'portainer_agent_network'
 docker_swarm_portainer_http_port: '9000'
 docker_swarm_portainer_service_port: '8000'
 

tasks/portainer.yml

@@ -1,22 +1,34 @@
 ---
 - name: Manage the installation of portainer as a stack
   block:
-  - name: Install the portainer docker stack configuration
-    template: src=portainer-agent-stack.yml.j2 dest=/srv/portainer-agent-stack.yml owner=root group=root mode='0444'
+  - name: Create a directory for the portainer stack
+    file: dest=/srv/portainer state=directory mode='0755'
 
-  - name: Create the overlay network that will be used by portainer
-    docker_network:
-      name: 'portainer_{{ docker_swarm_portainer_network }}'
-      driver: overlay
-      scope: swarm
+  - name: Install the portainer docker stack configuration
+    template: src=portainer-agent-stack.yml.j2 dest=/srv/portainer/portainer-agent-stack.yml owner=root group=root mode='0444'
 
   - name: Run the docker stack to start portainer
     docker_stack:
       state: present
       name: portainer
       compose:
-        - /srv/portainer-agent-stack.yml
+        - /srv/portainer/portainer-agent-stack.yml
     run_once: True
 
+  - name: Create the overlay network that will be used by portainer
+    docker_network:
+      name: '{{ docker_swarm_portainer_network }}'
+      driver: overlay
+      scope: swarm
+
+  - name: Connect the portainer service to its network
+    shell: docker service update --network-add {{ docker_swarm_portainer_network }} {{ item }} --update-delay 30s --update-parallelism 1 && touch /srv/portainer/.network_{{ item }}
+    with_items:
+      - 'portainer_portainer'
+      - 'portainer_agent'
+    args:
+      creates: '/srv/portainer/.network_{{ item }}'
+    ignore_errors: True
+
   when: docker_swarm_manager_main_node | bool
   tags: [ 'portainer', 'docker_portainer', 'docker_swarm', 'docker' ]

templates/portainer-agent-stack.yml.j2

@@ -6,8 +6,6 @@ services:
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock
       - /var/lib/docker/volumes:/var/lib/docker/volumes
-    networks:
-      - 'portainer_{{ docker_swarm_portainer_network }}'
     deploy:
       mode: global
       placement:
@@ -25,8 +23,6 @@ services:
     #  - "{{ docker_swarm_portainer_service_port }}:8000"
     volumes:
       - portainer_data:/data
-    networks:
-      - 'portainer_{{ docker_swarm_portainer_network }}'
     deploy:
       mode: replicated
       replicas: 1