Ansible-role-postgresql: How do you install from PostgresSQL YUM repository

I _think_ I have answered this myself.

I ran:

yum install https://download.postgresql.org/pub/repos/yum/9.6/redhat/rhel-7-x86_64/pgdg-centos96-9.6-3.noarch.rpm

Then looking in /etc/yum.repos.d/pgdg-96-centos.repo I found the name pgdg96. Setting postgresql_enablerepo to this resulted in postgresql96-libs being pulled from pgdg96 but everything else (postgresql, postgresql-contrib etc) still coming from updates.

So I followed the instructions at https://wiki.postgresql.org/wiki/YUM_Installation to exclude postgresql* from base and updates.

I then re-ran the playbook with the role and got 9.6 installed.

To do this in Ansible I added these pre_tasks:

    - ini_file:
        path: /etc/yum.repos.d/CentOS-Base.repo
        option: exclude
        value: postgresql*
        section: "{{ item }}"
      with_items:
        - base
        - updates
    - yum:
        name: https://download.postgresql.org/pub/repos/yum/9.6/redhat/rhel-7-x86_64/pgdg-centos96-9.6-3.noarch.rpm
        state: present

Is this the right way to do it or am I working around my own ineptitude?

Thanks

Hi @worldofchris, I ran into the same issue trying to install PostgreSQL 9.6 on CentOS 7 and your approach got me started down the correct road. However, I still ran into some problems because Postgres is not being installed from system packages. After several unsuccessful attempts, I noticed the section in the README that addresses using non-system packages and came up with the following:

- hosts: all
  gather_facts: true

  pre_tasks:
    - name: make selinux permissive
      selinux:
        policy: targeted
        state: permissive
      become: yes

    - name: install PostgreSQL 9.6 repository
      yum:
        name: https://download.postgresql.org/pub/repos/yum/9.6/redhat/rhel-7-x86_64/pgdg-centos96-9.6-3.noarch.rpm
        state: present
      become: yes

  tasks:
    - name: install system packages
      yum:
        name: "{{ item }}"
        state: installed
      with_items:
        - "@Development tools"
      become: yes

  roles:
    - role: geerlingguy.postgresql
      postgresql_enablerepo: "pgdg96"
      postgresql_version: 9.6
      postgresql_data_dir: /var/lib/pgsql/9.6/data
      postgresql_bin_path: /usr/pgsql-9.6/bin
      postgresql_config_path: /var/lib/pgsql/9.6/data
      postgresql_daemon: postgresql-9.6.service
      postgresql_packages:
        - postgresql96
        - postgresql96-server
        - postgresql96-libs
        - postgresql96-contrib
        - postgresql96-devel
      become: yes

It turns out that you have to be very specific about the version-specific variables but it all seems to work now and I did not have to make any changes to CentOS-Base.repo. Hopefully this helps you out.

thanks @worldofchris @matthiase both helped me considerably!

Awesome help. This should be documented in a wiki or something

If someone wants to get PostgreSQL 10 running with ansible role, I managed to get it working with the following playbook:

- hosts: all

  pre_tasks:
  - name: install PostgreSQL 10 repository
    yum:
      name: https://download.postgresql.org/pub/repos/yum/10/redhat/rhel-7.5-x86_64/pgdg-redhat10-10-2.noarch.rpm
      state: present
    become: yes

  tasks:


  roles:
  - role: geerlingguy.postgresql
    postgresql_enablerepo: "pgdg10"
    postgresql_version: 10
    postgresql_data_dir: /var/lib/pgsql/10/data
    postgresql_bin_path: /usr/pgsql-10/bin
    postgresql_config_path: /var/lib/pgsql/10/data
    postgresql_daemon: postgresql-10.service
    postgresql_packages:
      - postgresql10
      - postgresql10-server
      - postgresql10-libs
      - postgresql10-contrib
      - postgresql10-devel
    become: yes

- hosts: db
  pre_tasks:
          -  name: install repository PostgresQL
             yum:
               name: https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm
               state: present
             become: yes
  become: yes

  vars_files:
     - /home/sane/ansible_roles/pg/geerlingguy.postgresql/defaults/main.yml
  roles:
    - role: geerlingguy.postgresql
      postgresql_enablerepo: "pgdg11"
      postgresql_version: 11
      postgresql_data_dir: /var/lib/pgsql/11/data
      postgresql_bin_path: /usr/pgsql-11/bin
      postgresql_config_path: /var/lib/pgsql/11/data
      postgresql_daemon: postgresql-11.service
      postgresql_packages:
        - postgresql11
        - postgresql11-server
        - postgresql11-libs
        - postgresql11-contrib
        - postgresql11-devel
  become: yes                        

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