haproxy: simplify template selection

haproxy/README.md

@@ -12,3 +12,12 @@ Everything is in the `tasks/main.yml` file.
 * `haproxy_package_release`: which Debian release to use for HAProxy (default: `general_package_release`).
 
 The full list of variables (with default values) can be found in `defaults/main.yml`.
+
+## Configuration templates
+
+The roles compiles a `haproxy.cfg` file based on templates that are looked up in that order :
+1. `{{ playbook_dir}}/templates/haproxy/haproxy.{{ inventory_hostname}}.cfg.j2`
+2. `{{ playbook_dir}}/templates/haproxy/haproxy.{{ host_group}}.cfg.j2` (NB : `host_group` is not a core variable, it must be defined in `group_vars` files.)
+3. `{{ playbook_dir}}/templates/haproxy/haproxy.default.cfg.j2`
+
+If nothing is found, the role falls back to the template embedded in the role : `templates/haproxy.default.cfg.j2`

haproxy/tasks/main.yml

@@ -18,11 +18,8 @@
     dest: /etc/haproxy/haproxy.cfg
     force: yes
   with_first_found:
-  - files:
-    - "{{ inventory_hostname }}"
-    - "{{ host_group }}"
-    - "default"
-    paths:
-    - templates/haproxy-config
-  - default
+  - "templates/haproxy/haproxy.{{ inventory_hostname }}.cfg.j2"
+  - "templates/haproxy/haproxy.{{ host_group }}.cfg.j2"
+  - "templates/haproxy/haproxy.default.cfg.j2"
+  - "haproxy.default.cfg.j2"
   notify: reload haproxy

haproxy/templates/haproxy.default.cfg.j2

@@ -1,3 +1,5 @@
+# {{ ansible_managed }}
+
 global
     log /dev/log    local0
     log /dev/log    local1 notice