Merge pull request #2 from fidanf/add-systemd-start

Add systemd start

Author: fidanf

README.md

@@ -5,6 +5,16 @@ PgPool
 
 Installs and configures PgPool-II for Debian/Ubuntu. The default _running mode_ is **streaming replication mode**.
 
+- [PgPool](#pgpool)
+  - [Requirements](#requirements)
+  - [Role Variables](#role-variables)
+  - [Dependencies](#dependencies)
+  - [Example Playbook](#example-playbook)
+  - [Configuration checking commands](#configuration-checking-commands)
+  - [PCP commands](#pcp-commands)
+  - [Handling server reboots](#handling-server-reboots)
+  - [License](#license)
+
 Requirements
 ------------
 
@@ -110,6 +120,20 @@ Display PgPool's cluster status
 pcp_watchdog_info -h 127.0.0.1 -U pgpool -w -v
 ```
 
+Handling server reboots
+-----------------------
+
+Although using the recommended paths from the official documentation, socket directories seems to have unsufficient privileges to be able to recreate PIDs upon server reboots.
+
+If you're running PgPool and PostgreSQL on the same servers, you may use the following configuration instead which solves the problem :
+
+```yaml
+pgpool_pid_file_name: /var/run/postgresql/pgpool.pid
+pgpool_socket_dir: /var/run/postgresql
+pgpool_pcp_socket_dir: /var/run/postgresql
+pgpool_wd_ipc_socket_dir: /var/run/postgresql
+```
+
 More details at : https://www.pgpool.net/docs/latest/en/html/pcp-commands.html 
 
 License

defaults/main.yml

@@ -19,6 +19,9 @@ pgpool_postgresql_service_group: postgres
 pgpool_postgres_password_cleartext: postgres
 pgpool_postgresql_home_directory: /var/lib/postgresql
 pgpool_postgresql_data_directory: "{{ pgpool_postgresql_home_directory }}/{{ pgpool_postgresql_version }}/{{ pgpool_postgresql_cluster_name }}"
+# systemd
+pgpool_systemd_state: started
+pgpool_systemd_enabled: yes
 
 # pgpool user
 pgpool_home_directory: /etc/pgpool2

tasks/_systemd.yml

@@ -0,0 +1,6 @@
+---
+- name: Start Pg-Pool II
+  systemd: 
+    name: pgpool2
+    state: "{{ pgpool_systemd_state }}"
+    enabled: "{{ pgpool_systemd_enabled }}"

tasks/main.yml

@@ -26,3 +26,6 @@
 
 - import_tasks: _scripts.yml
   tags: ['scripts']
+
+- import_tasks: _systemd.yml
+  tags: ['systemd']