ansible-role-postgresql/tasks/postgresql-streaming-replic...

165 lines
5.5 KiB
YAML

---
- name: Configuration of the streaming replication
block:
- name: Create the replication user
postgresql_user:
name: '{{ psql_streaming_replication_user }}'
role_attr_flags: "REPLICATION"
password: '{{ psql_streaming_replication_pwd }}'
encrypted: yes
state: present
- name: Setup the streaming replication on the primary
postgresql_set:
name: '{{ item.name }}'
value: "{{ item.value }}"
loop: '{{ psql_streaming_replication_config }}'
when: postgresql_streaming_replication_primary_node == ansible_fqdn
notify: Restart postgresql
become: True
become_user: postgres
tags: [ 'postgresql', 'postgres', 'pg_conf', 'postgresql_replication' ]
- name: Configure the streaming replication user on deb systems
block:
- name: Configure the replication user permissions on deb
postgresql_pg_hba:
dest: '{{ psql_conf_dir }}/pg_hba.conf'
contype: host
users: '{{ psql_streaming_replication_user }}'
address: '{{ item }}'
databases: 'replication'
#method: 'scram-sha-256'
method: 'md5'
state: present
loop: '{{ psql_streaming_replication_hosts }}'
notify: Reload postgresql
when: not psql_enable_ssl
- name: Configure the replication user permissions on deb
postgresql_pg_hba:
dest: '{{ psql_conf_dir }}/pg_hba.conf'
contype: hostssl
users: '{{ psql_streaming_replication_user }}'
address: '{{ item }}'
databases: 'replication'
#method: 'scram-sha-256'
method: 'md5'
state: present
loop: '{{ psql_streaming_replication_hosts }}'
notify: Reload postgresql
when: psql_enable_ssl
when: ansible_distribution_file_variety == "Debian"
tags: [ 'postgresql', 'postgres', 'pg_conf', 'pg_hba', 'postgresql_replication' ]
- name: Configure the streaming replication user on EL
block:
- name: Configure the replication user permissions on EL
postgresql_pg_hba:
dest: '{{ psql_el_conf_dir }}/pg_hba.conf'
contype: host
users: '{{ psql_streaming_replication_user }}'
address: '{{ item }}'
databases: 'replication'
#method: 'scram-sha-256'
method: 'md5'
state: present
loop: '{{ psql_streaming_replication_hosts }}'
notify: Reload postgresql
when: not psql_enable_ssl
- name: Configure the replication user permissions on EL
postgresql_pg_hba:
dest: '{{ psql_el_conf_dir }}/pg_hba.conf'
contype: hostssl
users: '{{ psql_streaming_replication_user }}'
address: '{{ item }}'
databases: 'replication'
#method: 'scram-sha-256'
method: 'md5'
state: present
loop: '{{ psql_streaming_replication_hosts }}'
notify: Reload postgresql
when: psql_enable_ssl
when: ansible_distribution_file_variety == "RedHat"
tags: [ 'postgresql', 'postgres', 'pg_conf', 'pg_hba', 'postgresql_replication' ]
- name: Manage the replica initialization
block:
- name: Set some paths when it is a deb based system
set_fact:
postgresql_user_home: '/var/lib/postgresql'
postgresql_active_data_dir: '{{ psql_data_dir }}'
when: ansible_distribution_file_variety == "Debian"
- name: Set some paths it is a EL based system
set_fact:
postgresql_user_home: '/var/lib/pgsql'
postgresql_active_data_dir: '{{ psql_el_data_dir }}'
when: ansible_distribution_file_variety == "RedHat"
- name: Create the .pgpass file inside the postgresql home {{ postgresql_user_home }}
become: True
become_user: postgres
copy:
content: "{{ postgresql_streaming_replication_primary_node }}:{{ psql_db_port }}:replication:{{ psql_streaming_replication_user }}:{{ psql_streaming_replication_pwd }}"
dest: '{{ postgresql_user_home }}/.pgpass'
mode: '0400'
- name: Check if a replica is already enabled
stat:
path: '{{ postgresql_active_data_dir }}/.standby.signal'
register: standby_signal_file
- name: Stop the postgresql service on deb systems
service:
name: postgresql
state: stopped
when:
- ansible_distribution_file_variety == "Debian"
- not standby_signal_file.stat.exists
- name: Stop the postgresql service on EL systems
service:
name: 'postgresql-{{ psql_version }}'
state: stopped
when:
- ansible_distribution_file_variety == "RedHat"
- not standby_signal_file.stat.exists
- name: Remove the data directory contents {{ postgresql_active_data_dir }}
become: True
become_user: postgres
file:
dest: '{{ postgresql_active_data_dir }}'
state: absent
when: not standby_signal_file.stat.exists
- name: Run the pg_basebackup command that starts the replica
become: True
become_user: postgres
shell: /usr/bin/pg_basebackup -h {{ postgresql_streaming_replication_primary_node }} -p {{ psql_db_port }} -U {{ psql_streaming_replication_user }} -D {{ postgresql_active_data_dir }} -Fp -R -Xs -P -w
when: not standby_signal_file.stat.exists
- name: Start the postgresql service
service:
name: postgresql
state: started
when:
- ansible_distribution_file_variety == "Debian"
- not standby_signal_file.stat.exists
- name: Start the postgresql service on EL systems
service:
name: 'postgresql-{{ psql_version }}'
state: started
when:
- ansible_distribution_file_variety == "RedHat"
- not standby_signal_file.stat.exists
when: postgresql_streaming_replication_primary_node != ansible_fqdn
tags: [ 'postgresql', 'postgres', 'pg_conf', 'postgresql_replication' ]