library/roles/data_disk/tasks/main.yml: Ansible 2 compatibility.

library/roles/postgresql: Ansible 2 compatibility.
library/roles/postgresql/tasks/manage_pg_db.yml: Add a task that activates extensions on the databases.

data_disk/tasks/main.yml

@@ -1,7 +1,7 @@
 ---
 - name: Create a file system on the new disks
   filesystem: dev=/dev/{{ item.device }} fstype={{ item.fstype }} force=no
-  with_items: disks_and_mountpoints_list
+  with_items: '{{ disks_and_mountpoints_list | default([]) }}'
   when:
     - additional_disks
     - item.create_filesystem
@@ -9,7 +9,7 @@
 
 - name: Manage the additional file systems
   mount: name={{ item.mountpoint }} src=/dev/{{ item.device }} fstype={{ item.fstype }} opts={{ item.opts }} state={{ item.state }}
-  with_items: '{{ disks_and_mountpoints_list }}'
+  with_items: '{{ disks_and_mountpoints_list | default([]) }}'
   when: additional_disks
   tags: [ 'data_disk', 'mountpoint' ]
 

postgresql/defaults/main.yml

@@ -1,11 +1,11 @@
 ---
-
 pg_use_postgresql_org_repo: True
 
 psql_postgresql_install: True
 psql_pkg_state: installed
 postgresql_enabled: True
 psql_pgpool_install: False
+psql_pgpool_service_install: False
 psql_pgpool_pkg_state: installed
 # 9.3 is the default version for Ubuntu trusty
 # It is highly recommended to use the postgresql.org repositories
@@ -44,6 +44,9 @@ postgresql_pkgs:
   - 'postgresql-client-{{ psql_version }}'
   - pgtop
 
+psql_ansible_needed_pkgs:
+  - python-psycopg2
+#  - libpq-dev
 psql_db_name: db_name
 psql_db_user: db_user
 psql_db_pwd: "We cannot save the password into the repository. Use another variable and change pgpass.j2 accordingly. Encrypt the file that contains the variable with ansible-vault"
@@ -62,7 +65,7 @@ postgres_gis_version: 2.1
 postgres_gis_pkgs:
   - 'postgresql-{{ psql_version }}-postgis-{{ postgres_gis_version }}'
 
-
+# Local backup  
 pg_backup_enabled: True
 pg_backup_bin: /usr/local/sbin/postgresql-backup
 pg_backup_pgdump_bin: /usr/bin/pg_dump
@@ -79,7 +82,7 @@ pg_backup_use_nagios: "yes"
 
 #psql_db_data:
   # Example of line needed to create a db, create the user that owns the db, manage the db accesses (used by iptables too). All the fields are mandatory.
-  #- { name: '{{ psql_db_name }}', encoding: 'UTF8', user: '{{ psql_db_user }}', pwd: '{{ psql_db_pwd }}', roles: 'NOCREATEDB,NOSUPERUSER', allowed_hosts: [ 'xxx.xxx.xxx.xxx/32', 'yyy.yyy.yyy.yyy/32' ] }
+  #- { name: '{{ psql_db_name }}', encoding: 'UTF8', user: '{{ psql_db_user }}', pwd: '{{ psql_db_pwd }}', roles: 'NOCREATEDB,NOSUPERUSER', extensions: [ 'postgis', 'pgpool_regclass', 'pgpool_recovery' ], allowed_hosts: [ 'xxx.xxx.xxx.xxx/32', 'yyy.yyy.yyy.yyy/32' ] }
   # Example of line needed to manage the db accesses (used by iptables too), without creating the db and the user. Useful, for example, to give someone access to the postgresql db
   #- { name: '{{ psql_db_name }}', user: '{{ psql_db_user }}', allowed_hosts: [ 'xxx.xxx.xxx.xxx/32', 'yyy.yyy.yyy.yyy/32' ] }
 

postgresql/tasks/configure-access.yml

@@ -8,8 +8,8 @@
 - name: Give access to the remote postgresql client
   lineinfile: name=/etc/postgresql/{{ psql_version }}/main/pg_hba.conf regexp="^host {{ item.0.name }} {{ item.0.user }} {{ item.1 }}.*$" line="host {{ item.0.name }} {{ item.0.user }} {{ item.1 }} md5"
   with_subelements: 
-    - '{{ psql_db_data }}'
-    - '{{ allowed_hosts }}'
+    - '{{ psql_db_data | default([]) }}'
+    - allowed_hosts
   when:
     - psql_listen_on_ext_int
     - psql_db_data is defined

postgresql/tasks/main.yml

@@ -5,6 +5,8 @@
   when: psql_postgresql_install
 - include: postgis.yml
   when: postgres_install_gis_extensions
+- include: postgres_pgpool.yml
+  when: psql_pgpool_install
 - include: postgresql-config.yml
   when: psql_postgresql_install
 - include: psql-kernel-sharedmem.yml
@@ -24,5 +26,7 @@
     - psql_postgresql_install
     - psql_db_data is defined
 - include: pgpool-ii.yml
-  when: psql_pgpool_install
+  when: psql_pgpool_service_install
+
+
 

postgresql/tasks/manage_pg_db.yml

@@ -18,3 +18,13 @@
     - psql_db_data is defined
     - ( item.createdb is not defined or item.createdb )
   tags: [ 'postgresql', 'postgres', 'pg_db' ]
+
+- name: Add postgres extensions to the databases, if needed
+  become: True
+  become_user: postgres
+  postgresql_ext: name={{ item.1 }} db={{ item.0.name }}
+  with_subelements:
+    - '{{ psql_db_data | default ([]) }}'
+    - extensions
+  when: item.1 is defined
+  tags: [ 'postgresql', 'postgres', 'pg_extensions' ]

postgresql/tasks/packages.yml

@@ -7,16 +7,9 @@
 
 - name: Install the packages that ansible needs to manage the postgresql users and databases
   apt: pkg={{ item }} state={{ psql_pkg_state }}
-  with_items:
-    - python-psycopg2
+  with_items: '{{ psql_ansible_needed_pkgs }}'
   tags: [ 'postgresql', 'postgres' ]
 
-- name: Install the packages needed by postgres when running behind a pgpool server
-  apt: pkg={{ item }} state={{ psql_pkg_state }}
-  with_items: '{{ postgresql_pgpool_pkgs }}'
-  when: psql_pgpool_install
-  tags: [ 'postgresql', 'postgres', 'pgpool' ]
-
 - name: Ensure that the postgresql server is started
   service: name=postgresql state=started enabled=yes
   when: postgresql_enabled

postgresql/tasks/postgis.yml

@@ -2,9 +2,6 @@
 - name: install the postgresql GIS packages
   apt: pkg={{ item }} state={{ psql_pkg_state }}
   with_items: '{{ postgres_gis_pkgs }}'
-  notify:
-    Restart postgresql
-  tags:
-    - postgresql
-    - postgres
+  notify: Restart postgresql
+  tags: [ 'postgresql', 'postgres', 'postgis' ]
 

postgresql/tasks/postgres_pgpool.yml

@@ -0,0 +1,8 @@
+---
+- name: Install the packages needed by postgres when running behind a pgpool server
+  apt: pkg={{ item }} state={{ psql_pkg_state }}
+  with_items: '{{ postgresql_pgpool_pkgs }}'
+  when: psql_pgpool_install
+  notify: Restart postgresql
+  tags: [ 'postgresql', 'postgres', 'pgpool' ]
+

ubuntu-deb-general/tasks/packages.yml

@@ -60,7 +60,6 @@
 
 - name: Install additional packages, if any
   apt: pkg={{ item }} state={{ pkg_state }}
-  with_items: '{{ additional_packages }}'
-  when: additional_packages is defined
+  with_items: '{{ additional_packages | default([]) }}'
   tags: [ 'packages', 'common_pkgs', 'additional_packages' ]