ver 5

roles/postgresql/handlers/main.yml

@@ -1,4 +1,4 @@
 - name: Restart PostgreSQL
   service:
     name: postgresql
-    state: restarted
+    state: restarted

roles/postgresql/tasks/backup.yml

@@ -5,8 +5,6 @@
     owner: postgres
     group: postgres
     mode: '0755'
-  tags:
-    - backup
 
 - name: Perform database backup
   command: >
@@ -14,28 +12,22 @@
   become_user: postgres
   environment:
     PGPASSWORD: '{{ postgres_password }}'
-  tags:
-    - backup
 
 - name: Daily cron full backup
   cron:
-    name: 'PostgreSQL daily full backup'
+    name: 'PostgreSQL daily full backup {{ postgres_user }}'
     user: postgres
     minute: '0'
     hour: '1'
     job: "pg_dump -U {{ postgres_user }} -F c {{ postgres_db }} > {{ backup_dir }}/full_db_backup_{{ postgres_db }}_$(date +\\%F-\\%H-%M).sql"
   environment:
     PGPASSWORD: '{{ postgres_password }}'
-  tags:
-    - backup
 
 - name: Hourly cron incremental backup
   cron:
-    name: 'PostgreSQL hourly incremental backup'
+    name: 'PostgreSQL hourly incremental backup {{ postgres_user }}'
     user: postgres
     minute: '0'
     job: "pg_dump -U {{ postgres_user }} -F c --data-only --file=\"{{ backup_dir }}/incremental_db_backup_{{ postgres_db }}_$(date +\\%F-\\%H-%M).sql\" {{ postgres_db }}"
   environment:
-    PGPASSWORD: '{{ postgres_password }}'
-  tags:
-    - backup
+    PGPASSWORD: '{{ postgres_password }}'

roles/postgresql/tasks/configure.yml

@@ -1,4 +1,4 @@
-- name: Configure postgresql.conf with template
+- name: Configure postgresql.conf
   template:
     src: postgresql.conf.j2
     dest: /var/lib/pgsql/data/postgresql.conf
@@ -6,10 +6,8 @@
     group: postgres
     mode: '0644'
   notify: Restart PostgreSQL
-  tags:
-    - configure
 
-- name: Configure pg_hba.conf with template
+- name: Configure pg_hba.conf
   template:
     src: pg_hba.conf.j2
     dest: /var/lib/pgsql/data/pg_hba.conf
@@ -17,5 +15,3 @@
     group: postgres
     mode: '0644'
   notify: Restart PostgreSQL
-  tags:
-    - configure

roles/postgresql/tasks/databases.yml

@@ -4,14 +4,15 @@
     owner: '{{ postgres_user }}'
     encoding: UTF8
     state: present
-  tags:
-    - database
 
-- name: Create contacts table in PostgreSQL
+- name: Create contacts 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));'
+    query: |
+      CREATE TABLE IF NOT EXISTS contacts (
+        id SERIAL PRIMARY KEY,
+        name VARCHAR(100),
+        phone_number VARCHAR(15) UNIQUE
+      );
     login_user: '{{ postgres_user }}'
     login_password: '{{ postgres_password }}'
-  tags:
-    - database

roles/postgresql/tasks/initialize.yml

@@ -2,13 +2,9 @@
   command: sudo -u postgres initdb -D /var/lib/pgsql/data
   args:
     creates: /var/lib/pgsql/data/PG_VERSION
-  tags:
-    - init
-
+    
 - name: Systemctl start and enable PostgreSQL
   service:
     name: postgresql
     state: started
     enabled: true
-  tags:
-    - init

roles/postgresql/tasks/insert_data.yml

@@ -0,0 +1,11 @@
+- name: Insert data into PostgreSQL database
+  community.postgresql.postgresql_query:
+    db: '{{ postgres_db }}'
+    query: |
+      INSERT INTO contacts (name, phone_number) VALUES
+      ('dima', '123123123'),
+      ('vlad', '8800525252'),
+      ('denis', '77777777')
+      ON CONFLICT (phone_number) DO NOTHING;
+    login_user: '{{ postgres_user }}'
+    login_password: '{{ postgres_password }}'

roles/postgresql/tasks/main.yml

@@ -1,7 +1,31 @@
 - import_tasks: setup.yml
+  tags:
+    - setup
+
 - import_tasks: initialize.yml
+  tags:
+    - init
+
 - import_tasks: configure.yml
+  tags:
+    - configure
+
 - import_tasks: users.yml
+  tags:
+    - users
+
 - import_tasks: databases.yml
+  tags:
+    - database
+
+- import_tasks: insert_data.yml
+  tags:
+    - insert
+
 - import_tasks: open_firewall.yml
-- import_tasks: backup.yml
+  tags:
+    - firewall
+
+- import_tasks: backup.yml
+  tags:
+    - backup

roles/postgresql/tasks/open_firewall.yml

@@ -4,11 +4,9 @@
     permanent: true
     state: enabled
   become: true
-  tags:
-    - firewall
 
-- name: Reload firewall using command
-  command: firewall-cmd --reload
+- name: Reload firewalld
+  systemd:
+    name: firewalld
+    state: reloaded
   become: true
-  tags:
-    - firewall

roles/postgresql/tasks/setup.yml

@@ -4,12 +4,8 @@
       - postgresql-server
       - postgresql-contrib
     state: present
-  tags:
-    - setup
 
 - name: Install python3-psycopg2
   zypper:
     name: python3-psycopg2
     state: present
-  tags:
-    - setup

roles/postgresql/tasks/users.yml

@@ -2,6 +2,4 @@
   community.postgresql.postgresql_user:
     name: '{{ postgres_user }}'
     password: '{{ postgres_password }}'
-    state: present
-  tags:
-    - users
+    state: present

roles/postgresql/templates/postgresql.conf.j2

@@ -1,12 +1,11 @@
-listen_addresses = '{{ postgres_listen_addresses | default("*") }}'
+listen_addresses = '{{ postgres_listen_addresses }}'
 
-port = {{ postgres_port | default(5432) }}
+port = {{ postgres_port }}
 
-
-max_connections = {{ postgres_max_connections | default(100) }}
-shared_buffers = {{ postgres_shared_buffers | default("128MB") }}
-effective_cache_size = {{ postgres_effective_cache_size | default("4GB") }}
-maintenance_work_mem = {{ postgres_maintenance_work_mem | default("64MB") }}
-checkpoint_completion_target = {{ postgres_checkpoint_completion_target | default(0.7) }}
-wal_buffers = {{ postgres_wal_buffers | default("16MB") }}
-default_statistics_target = {{ postgres_default_statistics_target | default(100) }}
+max_connections = {{ postgres_max_connections }}
+shared_buffers = {{ postgres_shared_buffers }}
+effective_cache_size = {{ postgres_effective_cache_size }}
+maintenance_work_mem = {{ postgres_maintenance_work_mem }}
+checkpoint_completion_target = {{ postgres_checkpoint_completion_target }}
+wal_buffers = {{ postgres_wal_buffers }}
+default_statistics_target = {{ postgres_default_statistics_target }}

roles/postgresql/vars/main.yml

@@ -5,7 +5,14 @@ postgres_hba_entries:
   - { type: 'host', database: 'all', user: 'all', address: '0.0.0.0/0', method: 'md5' }
   - { type: 'local', database: 'all', user: 'all', address: '', method: 'trust' }
 
-backup_dir: "/var/lib/pgsql/backups"
+backup_dir: "/var/backups/postgresql"
 postgres_user: "postgres"
-postgres_password: "your_password"
-postgres_db: "your_database"
+postgres_db: "mydb"
+
+postgres_max_connections: 100
+postgres_shared_buffers: '128MB'
+postgres_effective_cache_size: '4GB'
+postgres_maintenance_work_mem: '64MB'
+postgres_checkpoint_completion_target: 0.7
+postgres_wal_buffers: '16MB'
+postgres_default_statistics_target: 100