121 lines
2.9 KiB
YAML
121 lines
2.9 KiB
YAML
---
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# Konfiguracja replikacji PostgreSQL
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# Ta rola uruchamia się na replica (pg2)
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# Tworzy użytkownika replicator i base backup z primary
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# --- Auto-detect PostgreSQL version na primary ---
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- name: Detect PostgreSQL version on primary
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shell: "ls -d /etc/postgresql/*/ | head -1 | xargs basename"
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register: pg_version_detect
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changed_when: false
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delegate_to: pg1
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run_once: true
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- name: Set PostgreSQL variables from detection
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set_fact:
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pg_version: "{{ pg_version_detect.stdout | trim }}"
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pg_cluster: "main"
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pg_data: "/var/lib/postgresql/{{ pg_version_detect.stdout | trim }}/main"
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pg_bin_path: "/usr/lib/postgresql/{{ pg_version_detect.stdout | trim }}/bin"
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- name: Wait for PostgreSQL on primary to be ready
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wait_for:
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host: pg1
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port: 5432
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timeout: 300
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delegate_to: pg1
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# --- Utworzenie użytkownika replicator na primary ---
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- name: Create replicator user on primary
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postgresql_user:
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name: replicator
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password: "{{ replicator_password }}"
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role_attr_flags: REPLICATION,LOGIN
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login_unix_socket_directory: /var/run/postgresql
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db: postgres
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become: true
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become_user: postgres
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delegate_to: pg1
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# --- Przygotowanie replica ---
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- name: Stop PostgreSQL on replica
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systemd:
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name: postgresql
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state: stopped
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- name: Remove existing cluster data on replica
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file:
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path: "{{ pg_data }}"
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state: absent
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# --- Base backup z primary ---
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- name: Create replication slot on primary
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postgresql_query:
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db: postgres
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query: "SELECT pg_create_physical_replication_slot('pg2_slot')"
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login_unix_socket_directory: /var/run/postgresql
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become: true
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become_user: postgres
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delegate_to: pg1
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ignore_errors: true
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- name: Perform base backup from primary to replica
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shell: |
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pg_basebackup \
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-h pg1 \
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-D {{ pg_data }} \
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-U replicator \
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-Fp \
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-Xs \
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-P \
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-R \
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-S pg2_slot
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become: true
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become_user: postgres
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register: basebackup_result
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- name: Fix permissions on data directory
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file:
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path: "{{ pg_data }}"
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owner: postgres
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group: postgres
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mode: "0700"
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recurse: yes
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become: true
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- name: Configure replication settings
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lineinfile:
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path: "{{ pg_data }}/standby.signal"
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line: ""
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create: yes
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owner: postgres
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group: postgres
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mode: "0644"
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# --- Uruchomienie replica ---
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- name: Start PostgreSQL on replica
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systemd:
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name: postgresql
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state: started
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enabled: yes
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- name: Wait for PostgreSQL replica to be ready
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wait_for:
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path: "/var/run/postgresql/.s.PGSQL.5432"
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timeout: 60
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state: present
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- name: Verify replication on primary
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postgresql_query:
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db: postgres
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query: "SELECT application_name, client_addr, state FROM pg_stat_replication"
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login_unix_socket_directory: /var/run/postgresql
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become: true
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become_user: postgres
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delegate_to: pg1
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register: replication_status
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- name: Display replication status
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debug:
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msg: "{{ replication_status.query_result }}"
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