Installation does not work on CentOS 7 with python3 interpreter

[colenot]

Installing nginx in a playbook with python3 interpreter enabled on host does not work.
Yum (and firewalld) modules need python2 interpreter to work on CentOS 7.
But python2 is deprecated, and some ansible modules need python3 interpreter (incudling crypto collection).

Workaround is changing interpreter for python2 for install tasks :
`# Python 2 must be used for installation on CentOS 7

• name: "Define Python Interpreter"
  set_fact:
  my_interpreter: "{{ ansible_python_interpreter }}"

• name: "Override Python Interpeter for CentOS7"
  set_fact:
  ansible_python_interpreter: "/bin/python2"
  when:

  • "ansible_distribution == 'CentOS'"
  • "ansible_distribution_major_version | int == 7"

• name: Install prerequisites
  become: yes
  package:
  name: [...]

• name: "Restore Python Interpeter"
  set_fact:
  ansible_python_interpreter: "{{ my_interpreter }}"`

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