Some configuration files must live in a file.

defaults/main.yml

@@ -14,14 +14,16 @@ timescale_db_el_pkgs:
   - libpq5-devel
 
 timescaledb_configuration_settings:
-  - { name: 'timescaledb.last_tuned', value: "'{{ ansible_date_time.date }}T{{ ansible_date_time.time }}{{ ansible_date_time.tz_offset }}'", set: 'True' }
-#  - { name: 'timescaledb.last_tuned_version', value: "'0.11.0'", set: 'True' }
-  - { name: 'timescaledb.max_background_workers', value: '{{ ansible_processor_vcpus * 8 }}', set: 'True' }
   - { name: 'max_worker_processes', value: '{{ (ansible_processor_vcpus * 4) - 1 }}', set: 'True' }
   - { name: 'max_parallel_workers_per_gather', value: '{{ (ansible_processor_vcpus / 2) | int }}', set: 'True' }
-  - { name: 'max_parallel_workers ', value: '{{ ansible_processor_vcpus }}', set: 'True' }
   - { name: 'default_statistics_target', value: '{{ (ansible_memtotal_mb / 16) | int }}', set: 'True' }
   - { name: 'random_page_cost', value: '1.1', set: 'True' }
   - { name: 'checkpoint_completion_target', value: '0.9', set: 'True' }
   - { name: 'max_locks_per_transaction', value: '{{ ((ansible_memtotal_mb / 512) * ansible_processor_vcpus) | int }}', set: 'True' }
   - { name: 'effective_io_concurrency', value: '200', set: 'True' }
+
+timescaledb_conf_settings_in_file:
+  - { name: 'timescaledb.last_tuned', value: "'{{ ansible_date_time.date }}T{{ ansible_date_time.time }}{{ ansible_date_time.tz_offset }}'", set: 'True' }
+  - { name: 'timescaledb.last_tuned_version', value: "'0.{{ timescaledb_postgresql_version }}.0'", set: 'True' }
+  - { name: 'timescaledb.max_background_workers', value: '{{ ansible_processor_vcpus * 8 }}', set: 'True' }
+  - { name: 'max_parallel_workers ', value: '{{ ansible_processor_vcpus }}', set: 'True' }

tasks/timescale_db_deb.yml

@@ -51,3 +51,11 @@
         value: "{% if item.set %}{{ item.value }}{% else %}default{% endif %}"
       loop: '{{ timescaledb_configuration_settings }}'
       notify: Reload postgresql
+    - name: timescale_db_deb | Some settings must be written into a config file
+      become: true
+      become_user: postgres
+      ansible.builtin.template:
+        src: timescaledb.conf.j2
+        dest: "{{ psql_conf_dir }}/conf.d/timescaledb.conf"
+        mode: "0644"
+      notify: Restart postgresql

tasks/timescale_db_el.yml

@@ -9,7 +9,6 @@
         owner: root
         group: root
         mode: "0644"
-
     - name: timescale_db_el | Install the timescale DB package on EL
       ansible.builtin.yum:
         pkg: '{{ timescale_db_el_pkgs }}'
@@ -38,3 +37,18 @@
         value: "{% if item.set %}{{ item.value }}{% else %}default{% endif %}"
       loop: '{{ timescaledb_configuration_settings }}'
       notify: Reload postgresql
+    - name: timescale_db_el | Ensure that the conf.d directory exists
+      ansible.builtin.file:
+        dest: "{{ psql_el_conf_dir }}/conf.d"
+        state: directory
+        owner: postgres
+        group: postgres
+        mode: "0750"
+    - name: timescale_db_el | Some settings must be written into a config file
+      become: true
+      become_user: postgres
+      ansible.builtin.template:
+        src: timescaledb.conf.j2
+        dest: "{{ psql_el_conf_dir }}/conf.d/timescaledb.conf"
+        mode: "0644"
+      notify: Restart postgresql

templates/timescaledb.conf.j2

@@ -0,0 +1,5 @@
+{% for opt in timescaledb_conf_settings_in_file %}
+{% if opt.set %}
+{{ opt.name }} = {{ opt.value }}
+{% endif %}
+{% endfor %}