v2.0.0

roles/postgres/tasks/main.yml

@@ -1,96 +1,111 @@
-- name: Install PostgreSQL packages
+---
+# Instalacja PostgreSQL (najnowsza wersja) i konfiguracja klastra
+# Role: primary i replica
+
+- name: Install PostgreSQL and contrib packages
   apt:
     name:
       - postgresql
       - postgresql-contrib
+      - python3-psycopg2
     update_cache: yes
+    state: present
 
-# --- Detect PostgreSQL version and cluster ---
-- name: Detect PostgreSQL version
-  shell: "ls -d /etc/postgresql/*/ | head -n1 | xargs basename"
-  register: pg_version_result
+# --- Auto-detect PostgreSQL version ---
+- name: Detect installed PostgreSQL version
+  shell: "ls -d /etc/postgresql/*/ | head -1 | xargs basename"
+  register: pg_version_detect
   changed_when: false
+  failed_when: pg_version_detect.rc != 0
 
-- name: Detect cluster name
-  shell: "ls -d /var/lib/postgresql/*/main/ 2>/dev/null | head -n1 | xargs -I {} basename $(dirname {}) | tail -n1"
-  register: pg_cluster_result
-  changed_when: false
-
-- name: Set PostgreSQL version and cluster facts
+- name: Set PostgreSQL version variable
   set_fact:
-    pg_version: "{{ pg_version_result.stdout | trim }}"
+    pg_version: "{{ pg_version_detect.stdout | trim }}"
     pg_cluster: "main"
+    pg_data: "/var/lib/postgresql/{{ pg_version_detect.stdout | trim }}/main"
+    pg_config_path: "/etc/postgresql/{{ pg_version_detect.stdout | trim }}/main"
+    pg_bin_path: "/usr/lib/postgresql/{{ pg_version_detect.stdout | trim }}/bin"
 
-- name: Define PostgreSQL cluster path
-  set_fact:
-    pg_cluster_path: "/etc/postgresql/{{ pg_version }}/{{ pg_cluster }}"
-    pg_data_path: "/var/lib/postgresql/{{ pg_version }}/{{ pg_cluster }}"
+- name: Display detected PostgreSQL version
+  debug:
+    msg: "PostgreSQL {{ pg_version }} detected. Data path: {{ pg_data }}"
 
-# --- Stop cluster before config ---
-- name: Stop PostgreSQL cluster
-  shell: "pg_ctlcluster {{ pg_version }} {{ pg_cluster }} stop"
-  ignore_errors: true
-
-# --- Remove broken cluster configuration if exists ---
-- name: Remove broken cluster configuration
-  shell: "rm -rf {{ pg_cluster_path }} {{ pg_data_path }}"
-  ignore_errors: true
-
-# --- Ensure data directory exists and is owned by postgres ---
-- name: Create PostgreSQL data directory
+# --- Tworzenie logów PostgreSQL ---
+- name: Ensure log directory exists
   file:
-    path: "{{ pg_data_path }}"
+    path: /var/log/postgresql
+    state: directory
+    owner: postgres
+    group: postgres
+    mode: "0755"
+
+# --- Inicjalizacja klastra ---
+- name: Check if cluster data directory exists
+  stat:
+    path: "{{ pg_data }}"
+  register: pg_data_stat
+
+- name: Create cluster data directory if not exists
+  file:
+    path: "{{ pg_data }}"
     state: directory
     owner: postgres
     group: postgres
     mode: "0700"
+  when: not pg_data_stat.stat.exists
 
-# --- Initialize database cluster ---
 - name: Initialize PostgreSQL cluster
-  shell: "sudo -u postgres /usr/lib/postgresql/{{ pg_version }}/bin/initdb -D {{ pg_data_path }} --encoding=UTF8 --locale=en_US.UTF-8"
-  ignore_errors: true
+  shell: "{{ pg_bin_path }}/initdb -D {{ pg_data }} --encoding=UTF8 --locale=en_US.UTF-8"
+  become: true
+  become_user: postgres
+  when: not pg_data_stat.stat.exists
+  register: initdb_result
 
-# --- Ensure cluster config directory exists ---
-- name: Ensure cluster config directory exists
+- name: Create config directory for cluster
   file:
-    path: "{{ pg_cluster_path }}"
+    path: "{{ pg_config_path }}"
     state: directory
     owner: postgres
     group: postgres
-    mode: "0700"
+    mode: "0755"
 
-# --- Configure PostgreSQL ---
-- name: postgresql.conf
+# --- Konfiguracja PostgreSQL ---
+- name: Deploy postgresql.conf
   template:
     src: postgresql.conf.j2
-    dest: "{{ pg_cluster_path }}/postgresql.conf"
+    dest: "{{ pg_config_path }}/postgresql.conf"
     owner: postgres
     group: postgres
     mode: "0600"
+  notify: restart postgresql
 
-- name: pg_hba.conf
+- name: Deploy pg_hba.conf
   template:
     src: pg_hba.conf.j2
-    dest: "{{ pg_cluster_path }}/pg_hba.conf"
+    dest: "{{ pg_config_path }}/pg_hba.conf"
     owner: postgres
     group: postgres
     mode: "0600"
+  notify: restart postgresql
 
-# --- Start cluster ---
-- name: Start PostgreSQL cluster
-  shell: "sudo -u postgres /usr/lib/postgresql/{{ pg_version }}/bin/pg_ctl -D {{ pg_data_path }} -l /var/log/postgresql/postgresql-{{ pg_version }}-{{ pg_cluster }}.log start"
-  ignore_errors: true
+# --- Uruchomienie PostgreSQL ---
+- name: Enable and start PostgreSQL service
+  systemd:
+    name: postgresql
+    enabled: yes
+    state: started
+    daemon_reload: yes
 
-# --- Wait for socket to be ready ---
-- name: Wait for PostgreSQL socket
+# --- Czekanie na socket ---
+- name: Wait for PostgreSQL socket to be ready
   wait_for:
-    path: "/var/run/postgresql/{{ pg_version }}-{{ pg_cluster }}/.s.PGSQL.5432"
+    path: "/var/run/postgresql/.s.PGSQL.5432"
     timeout: 60
-
-# --- Install Python PostgreSQL libraries ---
-- name: Install python postgres libraries
-  apt:
-    name:
-      - python3-psycopg2
     state: present
-    update_cache: yes
+
+# Handlery
+- name: restart postgresql
+  systemd:
+    name: postgresql
+    state: restarted
+  listen: "restart postgresql"

roles/postgres/templates/pg_hba.conf.j2

@@ -0,0 +1,15 @@
+# PostgreSQL 16 pg_hba.conf - Host Based Authentication
+# TYPE  DATABASE        USER            ADDRESS                 METHOD
+
+# Local connections
+local   all             postgres                                peer
+local   all             all                                     peer
+
+# Replication from pg2 (10.0.0.2)
+host    replication     replicator      10.0.0.2/32             md5
+
+# Applications and MailArchiver
+host    all             all             10.0.0.0/24             md5
+
+# IPv6 local
+host    all             all             ::1/128                 md5

roles/postgres/templates/postgresql.conf.j2

@@ -0,0 +1,51 @@
+# PostgreSQL Configuration for Production
+# Debian 13 - najnowsza dostępna wersja
+# Primary: pg1, Replica: pg2
+
+# --- Network ---
+listen_addresses = '*'
+max_connections = 200
+port = 5432
+
+# --- Memory (dla 8GB RAM) ---
+shared_buffers = 2GB
+effective_cache_size = 6GB
+work_mem = 64MB
+maintenance_work_mem = 1GB
+
+# --- WAL and Logging ---
+wal_level = replica
+wal_compression = on
+max_wal_senders = 10
+max_replication_slots = 10
+wal_keep_size = 10GB
+
+# --- Archiving (dla pgBackRest) ---
+archive_mode = on
+archive_command = 'pgbackrest --stanza=main archive-push %p'
+archive_timeout = 300
+
+# --- Checkpoints ---
+checkpoint_timeout = 15min
+checkpoint_completion_target = 0.9
+max_wal_size = 64GB
+min_wal_size = 16GB
+
+# --- Logging ---
+log_directory = '/var/log/postgresql'
+log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'
+log_truncate_on_rotation = on
+log_rotation_age = 1d
+log_rotation_size = 100MB
+log_min_duration_statement = 1000
+log_connections = on
+log_disconnections = on
+log_duration = off
+
+# --- Replication slots ---
+max_replication_slots = 10
+
+# --- Performance ---
+random_page_cost = 1.1
+effective_io_concurrency = 200
+synchronous_commit = local