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# We run two servers listening different ports
# to be able to check replication (one server for master, another for standby).
- name: Install packages
apt:
name: '{{ pg_package_list }}'
notify: cleanup postgresql
- name: Create root dirs
file:
state: directory
path: "{{ item }}"
owner: postgres
group: postgres
mode: 0700
loop:
- "{{ master_root_dir }}"
- "{{ master_data_dir }}"
- "{{ replica_root_dir }}"
- "{{ replica_data_dir }}"
notify: cleanup postgresql
- name: Find initdb
shell: find /usr/lib -type f -name "initdb"
register: result
- name: Set path to initdb
set_fact:
initdb: '{{ result.stdout }}'
- name: Initialize databases
become: yes
become_user: '{{ pg_user }}'
shell: '{{ initdb }} --pgdata {{ item }}'
loop:
- "{{ master_data_dir }}"
- "{{ replica_data_dir }}"
- name: Copy config templates
template:
src: '{{ item.conf_templ }}'
dest: '{{ item.conf_dest }}'
owner: postgres
group: postgres
force: yes
loop:
- { conf_templ: master_postgresql.conf.j2, conf_dest: '{{ master_postgresql_conf }}' }
- { conf_templ: replica_postgresql.conf.j2, conf_dest: '{{ replica_postgresql_conf }}' }
- { conf_templ: pg_hba.conf.j2, conf_dest: '{{ master_pg_hba_conf }}' }
- { conf_templ: pg_hba.conf.j2, conf_dest: '{{ replica_pg_hba_conf }}' }
- name: Find pg_ctl
shell: find /usr/lib -type f -name "pg_ctl"
register: result
- name: Set path to initdb
set_fact:
pg_ctl: '{{ result.stdout }}'
- name: Start servers
become: yes
become_user: '{{ pg_user }}'
shell: '{{ pg_ctl }} -D {{ item.datadir }} -o "-p {{ item.port }}" start'
loop:
- { datadir: '{{ master_data_dir }}', port: '{{ master_port }}' }
- { datadir: '{{ replica_data_dir }}', port: '{{ replica_port }}' }
notify: stop postgresql
- name: Check connectivity to the master and get PostgreSQL version
become: yes
become_user: '{{ pg_user }}'
postgresql_ping:
db: '{{ db_default }}'
login_user: '{{ pg_user }}'
login_port: '{{ master_port }}'
register: result
- name: Check connectivity to the replica and get PostgreSQL version
become: yes
become_user: '{{ pg_user }}'
postgresql_ping:
db: '{{ db_default }}'
login_user: '{{ pg_user }}'
login_port: '{{ replica_port }}'
- name: Define server version
set_fact:
pg_major_version: '{{ result.server_version.major }}'
pg_minor_version: '{{ result.server_version.minor }}'
- name: Print PostgreSQL version
debug:
msg: 'PostgreSQL version is {{ pg_major_version }}.{{ pg_minor_version }}'
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