feat(postgresql): add ansible role for postgresql deployment

galaxy.yml

@@ -1,13 +1,12 @@
 namespace: finallycoffee
 name: databases
-version: 0.1.2
+version: 0.1.1
 readme: README.md
 authors:
 - transcaffeine <transcaffeine@finally.coffee>
 description: Collection for deploying and configuring databases
 dependencies:
-  "community.docker": "^4.0.0"
-  "community.postgresql": "^3.9.0"
+  "community.docker": "^3.0.0"
 license_file: LICENSE.md
 build_ignore:
 - '*.tar.gz'

roles/postgresql/README.md

@@ -3,24 +3,6 @@
 PostgreSQL is the self proclaimed "world's most advanced" open source relational
 database. This ansible role can deploy and configure postgresql.
 
-By default, the role configures the remote's effective ansible user with
-peer authentication for the (postgresql) role `postgres` on all databases (with all grants).
-
-## Required configuration
-
-Set `postgresql_superuser_password` to your superusers desired password.
-
-## Optional configuration
-
-Set `postgresql_major_version` to your desired postgresql major version,
-for supported major versions see [`defaults/main/main.yml`](defaults/main/main.yml#L6).
-
-This role can be executed multiple times with different
-`postgresql_major_version` values to provide new database versions for up-to-
-date applications and older versions for software which does not yet support
-them. Container name and host mounts encode the major version to prevent
-accidental usage of the 'wrong' `PGDATA` directory.
-
 ## Requirements
 
 - `psycopg2` (pip) package

roles/postgresql/defaults/main/config.yml

@@ -8,7 +8,7 @@ postgresql_config_port: 5432
 
 postgresql_base_config:
   listen_addresses: "{{ postgresql_config_listen_addresses }}"
-  unix_socket_directories: "{{ postgresql_config_unix_socket_directories }}"
+  connect_socket: "{{ postgresql_config_connect_socket }}"
   port: "{{ postgresql_config_port }}"
 postgresql_merged_config: >-2
   {{ postgresql_base_config | combine(

roles/postgresql/defaults/main/main.yml

@@ -17,14 +17,15 @@ postgresql_pg_ident_conf_file: >-2
   {{ postgresql_config_path }}/pg_ident.conf
 postgresql_pg_hba_conf_file: >-2
   {{ postgresql_config_path }}/pg_hba.conf
-postgresql_admin_role: "postgres"
+postgresql_admin_role: "{{ postgresql_user }}"
 postgresql_admin_role_contype: local
 postgresql_admin_role_method: peer
 postgresql_admin_local_user: >-2
   {{ ansible_facts['user_id'] }}
 postgresql_admin_role_mapping_name: >-2
   {{ postgresql_admin_local_user }}_{{ postgresql_admin_role }}
-postgresql_admin_pg_ident_conf: "{{ postgresql_admin_role_mapping_name }}\t{{ postgresql_admin_local_user }}\t{{ postgresql_admin_role }}"
+postgresql_admin_pg_ident_conf: >-2
+  {{ postgresql_admin_role_mapping_name }}\t{{ postgresql_admin_local_user }}\t{{ postgresql_admin_role }}
 postgresql_admin_pg_hba_conf_options: >-2
   map={{ postgresql_admin_role_mapping_name }}
 postgresql_superuser_password: ~

roles/postgresql/tasks/configure.yml

@@ -14,31 +14,21 @@
     - name: Ensure postgresql configuration is set
       community.postgresql.postgresql_set:
         name: "{{ option.key }}"
-        value: "{{ pg_option_value }}"
+        value: "{{ option.value }}"
         login_host: "{{ postgresql_login_host }}"
         login_port: "{{ postgresql_config_port }}"
         login_password: "{{ postgresql_superuser_password }}"
-      loop: "{{ postgresql_merged_config | dict2items }}"
+      loop: "{{ postgresql_merged_options | dict2items }}"
       loop_control:
         loop_var: option
-      vars:
-        pg_option_value: >-2
-          {{
-            (option.value | join(' '))
-            if (option.value is iterable
-              and option.value is not string
-              and option.value is not mapping)
-            else option.value
-          }}
-      register: postgresql_config_results
 
     - name: Ensure postgresql configuration is reloaded
       community.postgresql.postgresql_query:
-        db: "postgres"
         query: "SELECT pg_reload_conf();"
         login_host: "{{ postgresql_login_host }}"
         login_port: "{{ postgresql_config_port }}"
         login_password: "{{ postgresql_superuser_password }}"
+      register: postgresql_config_results
 
     - name: Ensure restart handler is fired if required
       debug:
@@ -49,8 +39,7 @@
       loop: "{{ postgresql_config_results.results }}"
       loop_control:
         loop_var: result
-        label: "{{ result.option.key }}"
-  when: postgresql_state == 'present'
+        label: "{{ result.option.name }}"
   vars:
     postgresql_login_host: >-2
       {{

roles/postgresql/tasks/deploy-docker.yml

@@ -69,9 +69,10 @@
     file: "initialize-docker.yml"
   when:
     - postgresql_state == 'present'
-    - not postgresql_global_data_info.stat.exists
+    - postgresql_global_data_info.stat.exists
     - postgresql_global_data_info.stat.isdir is defined
-    - not postgresql_global_data_info.stat.isdir
+    - postgresql_global_data_info.stat.isdir
+    # TODO: determine if initialization is needed
 
 - name: Ensure postgresql container '{{ postgresql_container_name }}' is {{ postgresql_container_state }}
   community.docker.docker_container:

roles/postgresql/tasks/deploy-local.yml

@@ -1,11 +0,0 @@
----
-- name: Ensure postgresql package is {{ postgresql_state }}
-  ansible.builtin.package:
-    name: "{{ postgresql_os_package_name }}"
-    state: "{{ postgresql_state }}"
-
-- name: Ensure postgresql systemd unit is {{ (postgresql_state == 'present') | ternary('enabled', 'disabled') }}
-  ansible.builtin.systemd:
-    name: "{{ postgresql_systemd_service_name }}"
-    enabled: "{{ (postgresql_state == 'present') }}"
-  when: ansible_facts['service_mgr'] == 'systemd'

roles/postgresql/tasks/main.yml

@@ -33,7 +33,6 @@
   loop:
     - name: "{{ postgresql_config_path }}"
     - name: "{{ postgresql_data_path }}"
-      mode: "0700"
   loop_control:
     loop_var: path
     label: "{{ path.name }}"

roles/postgresql/tasks/prepare.yml

@@ -20,9 +20,8 @@
       line: "# Ansible managed"
     - name: "{{ postgresql_pg_ident_conf_file }}"
       insert_after: "# Ansible managed"
-      line: "{{ postgresql_admin_pg_ident_conf }}"
+      line: "{{ ansible_user }}_{{ postgresql_admin_role }}\t{{ ansible_user }}\t{{ postgresql_admin_role }}"
   when: postgresql_state == 'present'
-  notify: postgresql_restart
 
 - name: Configure permissions for postgresql admin role
   community.postgresql.postgresql_pg_hba:
@@ -30,6 +29,5 @@
     contype: "{{ postgresql_admin_role_contype }}"
     users: "{{ postgresql_admin_role }}"
     method: "{{ postgresql_admin_role_method }}"
-    options: "{{ postgresql_admin_pg_hba_conf_options }}"
+    options: "map={{ ansible_user }}_{{ postgresql_admin_role }}"
   when: postgresql_state == 'present'
-  notify: postgresql_restart

roles/postgresql/vars/main.yml

@@ -4,4 +4,3 @@ postgresql_states:
   - absent
 postgresql_deployment_methods:
   - docker
-  - local