79 lines
3.4 KiB
YAML
79 lines
3.4 KiB
YAML
---
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# We used to store Postgres data directly under `/matrix/postgres` (what is now considered `matrix_postgres_base_path`).
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#
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# From now on, we expect to store Postgres data one directory below now (`/matrix/postgres/data` - `matrix_postgres_data_path`).
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# We wish to use the base directory for other purposes (storing environment variable files, etc.).
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# Mixing those with the Postgres data is no good and it leads to Postgres's `initdb` complaining to initialize
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# a database in a non-empty directory.
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#
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# For this reason, we store the Postgres data in `/matrix/postgres/data` and need to relocate any installations
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# which still store it in the parent directory (`/matrix/postgres`).
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#
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# This utility is intentionally not in `tasks/util`, because if it were, it wouldn't be possible
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# to include it in other roles via the import_role module: https://docs.ansible.com/ansible/latest/collections/ansible/builtin/import_role_module.html
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- name: Check if old Postgres data directory is used
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ansible.builtin.stat:
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path: "{{ matrix_postgres_base_path }}/PG_VERSION"
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register: result_pg_old_data_dir_stat
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- name: Warn if old Postgres data directory detected
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ansible.builtin.debug:
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msg: >
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Found that you have Postgres data in `{{ matrix_postgres_base_path }}`.
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From now on, Postgres data is supposed to be stored in `{{ matrix_postgres_data_path }}` instead.
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We'll stop Postgres and relocate the files there for you.
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when: "result_pg_old_data_dir_stat.stat.exists"
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# We should stop Postgres first, before building a list of files,
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# as to ignore any `postmaster.pid` files, etc.
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- name: Ensure matrix-postgres is stopped
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ansible.builtin.service:
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name: matrix-postgres
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state: stopped
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daemon_reload: true
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when: "result_pg_old_data_dir_stat.stat.exists"
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- name: Find files and directories in old Postgres data path
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ansible.builtin.find:
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paths: "{{ matrix_postgres_base_path }}"
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file_type: any
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excludes: ["data"]
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register: "result_pg_old_data_dir_find"
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when: "result_pg_old_data_dir_stat.stat.exists"
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- name: Ensure new Postgres data path exists
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ansible.builtin.file:
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path: "{{ matrix_postgres_data_path }}"
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state: directory
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mode: 0700
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owner: "{{ matrix_user_username }}"
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group: "{{ matrix_user_groupname }}"
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when: "result_pg_old_data_dir_stat.stat.exists"
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- block:
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- name: Relocate Postgres data files from old directory to new
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ansible.builtin.command:
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cmd: "mv {{ item.path }} {{ matrix_postgres_data_path }}/{{ item.path | basename }}"
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with_items: "{{ result_pg_old_data_dir_find.files }}"
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register: matrix_postgres_migrate_postgres_data_directory_move_result
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changed_when: matrix_postgres_migrate_postgres_data_directory_move_result.rc == 0
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when: "result_pg_old_data_dir_stat.stat.exists"
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# Intentionally not starting matrix-postgres here.
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# It likely needs to be updated to point to the new directory.
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# In fact, let's even get rid of the outdated service, to ensure no one will start it
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# and have it initialize a new database.
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- name: Ensure outdated matrix-postgres.service doesn't exist
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ansible.builtin.file:
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path: "{{ matrix_systemd_path }}/matrix-postgres.service"
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state: absent
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when: "result_pg_old_data_dir_stat.stat.exists"
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- name: Ensure systemd reloaded after getting rid of outdated matrix-postgres.service
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ansible.builtin.service:
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daemon_reload: true
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when: "result_pg_old_data_dir_stat.stat.exists"
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