add install task

tasks/install.yml

@@ -0,0 +1,11 @@
+---
+- block:
+  - name: Install PostgreSQL
+    package:
+      name: "{{ item }}"
+      state: present
+    with_items:
+      - "{{ postgres_packagename }}"
+      - "{{ postgres_packagename }}-server"
+  become: True
+  become_user: root

tasks/prepare.yml

@@ -11,7 +11,10 @@
       gpgkey: "https://download.postgresql.org/pub/repos/yum/RPM-GPG-KEY-PGDG-{{ postgres_version }}"
 
   - set_fact:
-      postgres_packagename: "postgresql{{ postgres_version | regex_replace('\\.') }}-server"
+      postgres_packagename: "postgresql{{ postgres_version | regex_replace('\\.') }}"
+
+  - debug:
+      msg: "Set PostgreSQL package name to '{{ postgres_packagename }}'"
   become: True
   become_user: root
   when: postgres_repository_enabled