"No package matching 'epel-release' found available, installed or updated" on RHEL7

[tvigers]

Hi All,

When running the role against a RHEL7 host (not CentOS) the role fails when performing the following task:

      - name: PostgreSQL | Install all the required dependencies
        yum:
          name: ["ca-certificates","python-psycopg2", "python-pycurl", "glibc-common","epel-release","libselinux-python"]
          state: present

It is producing the following error message:

TASK [ANXS.postgresql : PostgreSQL | Install all the required dependencies] 
*********************************************************************************************************
fatal: [x.x.x.x]: FAILED! => {"changed": false, "failed": true, "msg": "No package matching 'epel-
release' found available, installed or updated", "rc": 126, "results": ["ca-certificates-2017.2.14-
71.el7.noarch providing ca-certificates is already installed", "python-pycurl-7.19.0-19.el7.x86_64 
providing python-pycurl is already installed", "glibc-common-2.17-196.el7_4.2.x86_64 providing glibc-
common is already installed", "No package matching 'epel-release' found available, installed or 
updated"]}

This is because 'epel-release' is available in the CentOS repositories however not available through the official Red Hat repo's.

To maintain compatibility with both CentOS and RHEL it would probably be better to have a separate task for enabling the EPEL repository.

I have been able to get it to work on RHEL by adding the following:

defaults/main.yml

postgresql_epel_release_base_url: "https://dl.fedoraproject.org/pub/epel" postgresql_epel_release_url: "{{ postgresql_epel_release_base_url }}/epel-release-latest-{{ ansible_distribution_major_version }}.noarch.rpm"

tasks/install_yum.yml

   - block:
      - name: PostgreSQL | Install EPEL repository
        yum:
          name: "{{ postgresql_epel_release_url }}"
          state: present
      - name: PostgreSQL | Install all the required dependencies
        yum:
          name: ["ca-certificates","python-psycopg2", "python-pycurl", "glibc-common","libselinux-python"]
          state: present

It might also be better to use the yum_repository module for people who are using a local EPEL repo. I know at work we have ours in Red Hat Satellite. I guess it just depends on how much customisation you want to provide.

Cheers,

Tim

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