Add hark (a canary tcp listener)

playbooks/common.yml

@@ -51,3 +51,8 @@
 - hosts: data-exchange
   roles:
     - data-exchange
+
+- hosts: hark
+  roles:
+    - hark
+

roles/hark/defaults/main.yml

+---
+
+# Keep services.common.yml in sync with this variable.
+hark_ports:
+  - 23
+  - 79
+  - 88
+  - 111
+  - 161
+  - 631
+  - 1080
+  - 6000
+  - 8000
+  - 8080
+

roles/hark/handlers/main.yml

+---
+
+- listen: restart hark
+  systemd:
+    name: hark.service
+    state: restarted
+

roles/hark/tasks/main.yml

+---
+
+- name: Install hark package
+  apt:
+    name: hark
+    state: present
+
+- name: Configure har
+  template:
+    src: hark.default.j2
+    dest: "/etc/default/hark"
+  notify: restart hark
+

roles/hark/templates/hark.default.j2

+PORTS="{% for port in hark_ports %}--port {{ port }} {% endfor %}"
+

services.common.yml

@@ -214,3 +214,24 @@ data-exchange:
     - name: data-exchange
       port: 5792
       scheme: http
+
+hark:
+  scheduling_group: all
+  monitoring_endpoints:
+    - job_name: hark
+      port: 9419
+      scheme: http
+  systemd_services:
+    - hark.service
+  ports:
+    - 23
+    - 79
+    - 88
+    - 111
+    - 161
+    - 631
+    - 1080
+    - 6000
+    - 8000
+    - 8080
+