matrix-docker-ansible-deploy/roles/matrix-postgres/tasks/setup_postgres.yml

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---
#
# Generic tasks, no matter what kind of server we're using (internal/external)
#
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- import_tasks: "{{ role_path }}/tasks/migrate_postgres_data_directory.yml"
- import_tasks: "{{ role_path }}/tasks/util/detect_existing_postgres_version.yml"
# If we have found an existing version (installed from before), we use its corresponding Docker image.
# If not, we install using the latest Postgres.
#
# Upgrading is supposed to be performed separately and explicitly (see `upgrade_postgres.yml`).
- set_fact:
matrix_postgres_docker_image_to_use: "{{ matrix_postgres_docker_image_latest if matrix_postgres_detected_version_corresponding_docker_image == '' else matrix_postgres_detected_version_corresponding_docker_image }}"
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- name: Warn if on an old version of Postgres
debug:
msg: "NOTE: Your setup is on an old Postgres version ({{ matrix_postgres_docker_image_to_use }}), while {{ matrix_postgres_docker_image_latest }} is supported. You can upgrade using --tags=upgrade-postgres"
when: "matrix_postgres_docker_image_to_use != matrix_postgres_docker_image_latest"
# Even if we don't run the internal server, we still need this for running the CLI
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- name: Ensure postgres Docker image is pulled
docker_image:
name: "{{ matrix_postgres_docker_image_to_use }}"
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# We always create these directories, even if an external Postgres is used,
# because we store environment variable files there.
- name: Ensure Postgres paths exist
file:
path: "{{ item }}"
state: directory
mode: 0700
owner: "{{ matrix_user_username }}"
group: "{{ matrix_user_username }}"
with_items:
- "{{ matrix_postgres_base_path }}"
- "{{ matrix_postgres_data_path }}"
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- name: Ensure Postgres environment variables file created
template:
src: "{{ role_path }}/templates/{{ item }}.j2"
dest: "{{ matrix_postgres_base_path }}/{{ item }}"
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mode: 0640
with_items:
- "env-postgres-psql"
- "env-postgres-server"
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- name: Ensure matrix-postgres-cli script created
template:
src: "{{ role_path }}/templates/usr-local-bin/matrix-postgres-cli.j2"
dest: "/usr/local/bin/matrix-postgres-cli"
mode: 0750
- name: Ensure matrix-make-user-admin script created
template:
src: "{{ role_path }}/templates/usr-local-bin/matrix-make-user-admin.j2"
dest: "/usr/local/bin/matrix-make-user-admin"
mode: 0750
#
# Tasks related to setting up an internal postgres server
#
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- name: Ensure matrix-postgres.service installed
template:
src: "{{ role_path }}/templates/systemd/matrix-postgres.service.j2"
dest: "/etc/systemd/system/matrix-postgres.service"
mode: 0644
when: "not matrix_postgres_use_external"
#
# Tasks related to getting rid of the internal postgres server (if it was previously enabled)
#
- name: Check existence of matrix-postgres service
stat:
path: "/etc/systemd/system/matrix-postgres.service"
register: matrix_postgres_service_stat
when: matrix_postgres_use_external
- name: Ensure matrix-postgres is stopped
service:
name: matrix-postgres
state: stopped
daemon_reload: yes
when: "matrix_postgres_use_external and matrix_postgres_service_stat.stat.exists"
- name: Ensure matrix-postgres.service doesn't exist
file:
path: "/etc/systemd/system/matrix-postgres.service"
state: absent
when: "matrix_postgres_use_external and matrix_postgres_service_stat.stat.exists"
- name: Check existence of matrix-postgres local data path
stat:
path: "{{ matrix_postgres_data_path }}"
register: matrix_postgres_data_path_stat
when: matrix_postgres_use_external
# We just want to notify the user. Deleting data is too destructive.
- name: Notify if matrix-postgres local data remains
debug:
msg: "Note: You are not using a local PostgreSQL database, but some old data remains from before in {{ matrix_postgres_data_path }}. Feel free to delete it."
when: "matrix_postgres_use_external and matrix_postgres_data_path_stat.stat.exists"