Use systemd socket activation for Foreman

Author: ekohl

src/roles/foreman/defaults/main.yaml

@@ -12,6 +12,7 @@ foreman_database_ssl_ca: # noqa: no-empty-defaults
 foreman_database_ssl_ca_path: /etc/foreman/db-ca.crt
 
 foreman_name: "{{ ansible_facts['fqdn'] }}"
+foreman_listen_stream: 127.0.0.1:3000
 foreman_url: "http://{{ ansible_facts['fqdn'] }}:3000"
 
 # Puma threads calculation:

src/roles/foreman/tasks/main.yaml

@@ -100,6 +100,12 @@
     - Restart foreman
     - Restart dynflow-sidekiq@
 
+- name: Deploy Foreman socket
+  ansible.builtin.template:
+    src: foreman.socket.j2
+    dest: /etc/systemd/system/foreman.socket
+    mode: '0644'
+
 - name: Deploy Foreman Container
   containers.podman.podman_container:
     name: "foreman"
@@ -130,6 +136,8 @@
       FOREMAN_ENABLED_PLUGINS: "{{ foreman_plugins | join(' ') }}"
     quadlet_options:
       - |
+        [Unit]
+        Requires=foreman.socket
         [Install]
         WantedBy=default.target foreman.target
         [Unit]

src/roles/foreman/templates/foreman.socket.j2

@@ -0,0 +1,8 @@
+[Unit]
+Description=Foreman socket
+
+[Socket]
+ListenStream={{ foreman_listen_stream }}
+
+[Install]
+WantedBy=sockets.target