Skip agent deployment on Portainer host (ubuntu-server-01)

ubuntu-server-01 (10.40.40.2) runs Portainer itself and is already
managed via local Docker socket (Portainer endpoint ID=3). Deploying
a Portainer Agent there is redundant and port 9001 binding fails.

Add portainer_skip_agent: true flag to the inventory and check it in
both Play 2 (deploy agent) and Play 3 (register endpoint) to exclude
the host from agent-based enrollment.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

inventory/hosts.yml

@@ -14,6 +14,9 @@ all:
       ansible_user: sam
       ansible_ssh_pass: Lewiss4224@@@
       ansible_become_pass: Lewiss4224@@@
+      # Portainer host — already in Portainer via local socket (ID=3).
+      # Skip agent deployment; connecting via agent would be redundant.
+      portainer_skip_agent: true
 
     ubuntu-server-02:
       ansible_host: 10.40.40.3

playbooks/find_docker_enroll_portainer.yml

@@ -96,6 +96,10 @@
       ansible.builtin.meta: end_host
       when: not (docker_running | default(false))
 
+    - name: Skip hosts that are already managed by Portainer directly
+      ansible.builtin.meta: end_host
+      when: portainer_skip_agent | default(false)
+
     - name: Check if portainer_agent container already exists
       ansible.builtin.command: >
         docker ps -a --filter name=portainer_agent --format "{% raw %}{{.Status}}{% endraw %}"
@@ -157,6 +161,10 @@
       ansible.builtin.meta: end_host
       when: not (docker_running | default(false))
 
+    - name: Skip hosts managed by Portainer directly (no agent needed)
+      ansible.builtin.meta: end_host
+      when: portainer_skip_agent | default(false)
+
     - name: Check if endpoint already exists in Portainer
       ansible.builtin.uri:
         url: "{{ portainer_url }}/api/endpoints"