courseworkrep/install_postgresql.yml

---
  - name: Install PostgreSQL on openSUSE Leap
    hosts: postgres_servers
    become: yes
    vars:
      postgres_user: "{{ postgres_user }}"
      postgres_password: "{{ postgres_password }}"
      postgres_db: "{{ postgres_db }}"        

    tasks:
    
      - name: Update zypper
        command: zypper refresh
        register: zypper_refresh
        changed_when: "'Refreshing' in zypper_refresh.stdout"

      - name: Update System
        zypper:
          name: '*'
          state: latest
        when: zypper_refresh.changed

      - name: Update PostgreSQL package
        zypper:
          name:
            - postgresql-server
            - postgresql-contrib
          state: present

      - name: PostgreSQL initdb 
        command: sudo -u postgres initdb -D /var/lib/pgsql/data
        args:
          creates: /var/lib/pgsql/data/PG_VERSION

      - name: Systemctl start and enable PostgreSQL
        service:
          name: postgresql
          state: started
          enabled: yes

      - name: python3-psycopg2 install
        zypper:
          name: python3-psycopg2
          state: present

      - name: Change listen_addresses in postgresql.conf
        lineinfile:
          path: /var/lib/pgsql/data/postgresql.conf
          regexp: '^#?listen_addresses\s*='
          line: "listen_addresses = '*'"
        notify: Restart PostgreSQL

      - name: Change pg_hba.conf 
        lineinfile:
          path: /var/lib/pgsql/data/pg_hba.conf
          regexp: '^host\s+all\s+all\s+0\.0\.0\.0/0\s+md5'
          line: "host    all             all             0.0.0.0/0               md5"
        notify: Restart PostgreSQL

      - name: Create User PostgreSQL
        community.postgresql.postgresql_user:
          name: "{{ postgres_user }}"
          password: "{{ postgres_password }}"
          state: present

      - name: Create Base PostgreSQL
        community.postgresql.postgresql_db:
          name: "{{ postgres_db }}"
          owner: "{{ postgres_user }}"
          encoding: UTF8
          state: present

      
      - name: Create a table
        community.postgresql.postgresql_query:
          db: "{{ postgres_db }}"
          query: >
            CREATE TABLE IF NOT EXISTS contacts (
              id SERIAL PRIMARY KEY,
              name VARCHAR(100),
              phone_number VARCHAR(15)
            );
          login_user: "{{ postgres_user }}"
          login_password: "{{ postgres_password }}"
      
      - name: open firewall 5432 port
        command: firewall-cmd --add-port=5432/tcp --permanent
        become: yes

      - name: Restart Firewall
        command: firewall-cmd --reload
        become: yes

    handlers:
      - name: Restart PostgreSQL
        service:
          name: postgresql
          state: restarted