feat(tuned): enable tuned and disable THP

ansible/tasks/setup-postgres.yml

@@ -325,6 +325,29 @@
 
 
 # Reload
+- name: Create a SystemD override dir for PostgreSQL
+  ansible.builtin.file:
+    group: 'root'
+    mode: '0755'
+    owner: 'root'
+    path: '/etc/systemd/system/postgresql.service.d'
+    state: 'directory'
+  become: true
+
+- name: Ensure PostgrfeSQL starts after tuned
+  become: true
+  community.general.ini_file:
+    create: true
+    group: 'root'
+    mode: '0644'
+    no_extra_spaces: true
+    option: 'After'
+    owner: 'root'
+    path: '/etc/systemd/system/postgresql.service.d/overrides.conf'
+    section: 'Unit'
+    state: 'present'
+    value: 'tuned.service'
+
 - name: System - systemd reload
   ansible.builtin.systemd_service:
     daemon_reload: true

ansible/tasks/setup-tuned.yml

@@ -1,10 +1,65 @@
-- name: Install tuned
-  ansible.builtin.apt:
-    force_apt_get: true
-    name: tuned
-    policy_rc_d: 101
-    state: 'present'
-    update_cache: true
-  become: true
+- name: INstall and configure tuned when stage2_nix
   when:
     - stage2_nix
+  block:
+    - name: Install tuned
+      ansible.builtin.apt:
+        force_apt_get: true
+        name: 'tuned'
+        policy_rc_d: 101
+        state: 'present'
+        update_cache: true
+      become: true
+
+    - name: Create a tuned profile directory
+      ansible.builtin.file:
+        group: 'root'
+        mode: '0755'
+        owner: 'root'
+        path: '/etc/tuned/postgresql'
+        state: 'directory'
+      become: true
+
+    - name: Create a tuned profile
+      community.general.ini_file:
+        create: true
+        group: 'root'
+        mode: '0644'
+        no_extra_spaces: true
+        option: 'summary'
+        path: '/etc/tuned/postgresql/tuned.conf'
+        section: 'main'
+        state: 'present'
+        value: 'Tuned profile for PostgreSQL'
+      become: true
+
+    - name: Disable Transparent Huge Pages (THP)
+      community.general.ini_file:
+        create: true
+        group: 'root'
+        mode: '0644'
+        no_extra_spaces: true
+        option: "{{ thp_item['option'] }}"
+        path: '/etc/tuned/postgresql/tuned.conf'
+        section: "{{ thp_item['section'] }}"
+        state: 'present'
+        value: "{{ thp_item['value'] }}"
+      become: true
+      loop:
+        - { section: 'bootloader', option: 'cmdline', value: 'transparent_hugepages=never' }
+        - { section: 'vm', option: 'transparent_hugepages', value: 'never' }
+      loop_control:
+        loop_var: 'thp_item'
+
+    - name: Activate the tuned service
+      ansible.builtin.systemd_service:
+        daemon_reload: true
+        enabled: true
+        name: 'tuned'
+        state: 'restarted'
+      become: true
+
+    - name: Activate the PostgreSQL tuned profile
+      ansible.builtin.command:
+        cmd: tuned-adm profile postgresql
+      become: true