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

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---
# Pre-checks
- name: Fail if Postgres not enabled
ansible.builtin.fail:
msg: "Postgres via the matrix-postgres role is not enabled (`matrix_postgres_enabled`). Cannot run vacuum."
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when: "not matrix_postgres_enabled | bool"
# Defaults
- name: Set postgres_start_wait_time, if not provided
ansible.builtin.set_fact:
postgres_start_wait_time: 15
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when: "postgres_start_wait_time | default('') == ''"
- name: Set postgres_vacuum_wait_time, if not provided
ansible.builtin.set_fact:
postgres_vacuum_wait_time: "{{ 7 * 86400 }}"
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when: "postgres_vacuum_wait_time | default('') == ''"
# Actual vacuuming work
- name: Ensure matrix-postgres is started
ansible.builtin.service:
name: matrix-postgres
state: started
daemon_reload: true
- name: Wait a bit, so that Postgres can start
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ansible.builtin.wait_for:
timeout: "{{ postgres_start_wait_time }}"
delegate_to: 127.0.0.1
become: false
- ansible.builtin.import_tasks: tasks/detect_existing_postgres_version.yml
- name: Abort, if no existing Postgres version detected
ansible.builtin.fail:
msg: "Could not find existing Postgres installation"
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when: "not matrix_postgres_detected_existing | bool"
- name: Generate Postgres database vacuum command
ansible.builtin.set_fact:
matrix_postgres_vacuum_command: >-
{{ matrix_host_command_docker }} run --rm --name matrix-postgres-synapse-vacuum
--user={{ matrix_user_uid }}:{{ matrix_user_gid }}
--cap-drop=ALL
--network={{ matrix_docker_network }}
--env-file={{ matrix_postgres_base_path }}/env-postgres-psql
{{ matrix_postgres_docker_image_latest }}
psql -v ON_ERROR_STOP=1 -h matrix-postgres {{ matrix_synapse_database_database }} -c 'VACUUM FULL VERBOSE'
- name: Note about Postgres vacuum alternative
ansible.builtin.debug:
msg: >-
Running vacuum with the following Postgres ansible.builtin.command: `{{ matrix_postgres_vacuum_command }}`.
If this crashes, you can stop all processes (`systemctl stop matrix-*`),
start Postgres only (`systemctl start matrix-postgres`)
and manually run the above command directly on the server.
- name: Populate service facts
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ansible.builtin.service_facts:
- ansible.builtin.set_fact:
matrix_postgres_synapse_was_running: "{{ ansible_facts.services['matrix-synapse.service'] | default(none) is not none and ansible_facts.services['matrix-synapse.service'].state == 'running' }}"
- name: Ensure matrix-synapse is stopped
ansible.builtin.service:
name: matrix-synapse
state: stopped
daemon_reload: true
- name: Run Postgres vacuum command
ansible.builtin.command: "{{ matrix_postgres_vacuum_command }}"
async: "{{ postgres_vacuum_wait_time }}"
poll: 10
register: matrix_postgres_synapse_vacuum_result
changed_when: matrix_postgres_synapse_vacuum_result.rc == 0
# Intentionally show the results
- ansible.builtin.debug: var="matrix_postgres_synapse_vacuum_result"
- name: Ensure matrix-synapse is started, if it previously was
ansible.builtin.service:
name: matrix-synapse
state: started
daemon_reload: true
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when: "matrix_postgres_synapse_was_running | bool"