ceph-ansible/raw_install_python.yml

---
- name: check for python
  stat:
    path: "{{ item }}"
  changed_when: false
  failed_when: false
  register: systempython
  with_items:
    - /usr/bin/python
    - /usr/bin/python3

- block:
    - name: check for dnf-3 package manager (RedHat/Fedora/CentOS)
      raw: stat /bin/dnf-3
      changed_when: false
      failed_when: false
      register: stat_dnf3

    - name: check for yum package manager (RedHat/Fedora/CentOS)
      raw: stat /bin/yum
      changed_when: false
      failed_when: false
      register: stat_yum

    - name: check for apt package manager (Debian/Ubuntu)
      raw: stat /usr/bin/apt-get
      changed_when: false
      failed_when: false
      register: stat_apt

    - name: check for zypper package manager (OpenSUSE)
      raw: stat /usr/bin/zypper
      changed_when: false
      failed_when: false
      register: stat_zypper

    - name: install python for RedHat based OS - dnf
      raw: >
        {{ 'dnf' if stat_dnf3.rc == 0 else 'yum' }} -y install python3;
        ln -sf /usr/bin/python3 /usr/bin/python
        creates=/usr/bin/python
      register: result
      until: (result is succeeded) and ('Failed' not in result.stdout)
      when: stat_dnf3.rc == 0 or stat_yum.rc == 0

    - name: install python for debian based OS
      raw: apt-get -y install python-simplejson
      register: result
      until: result is succeeded
      when: stat_apt.rc == 0

    - name: install python for opensuse
      raw: zypper -n install python-base
      register: result
      until: result is succeeded
      when: stat_zypper.rc == 0
  when: not True in (systempython.results | selectattr('stat', 'defined') | map(attribute='stat.exists') | list | unique)