How to Install python3.4.3 with Ansible

Question

I want to install python3.x by use pyenv with ansible.

- name: install pyenv
  git: >
    repo=https://github.com/pyenv/pyenv.git
    dest=/home/www/.pyenv
    accept_hostkey=yes
    become: yes
    become_user: www

- name: enable pyenv
  shell: |
    echo 'export PYENV_ROOT="/home/www/.pyenv"' >> /home/www/.bashrc
    echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> /home/www/.bashrc
    echo 'eval "$(pyenv init -)"' >> /home/www/.bashrc
- name: install python
  shell: pyenv install 3.4.3

How to install python3.x with ansible?

Answer 1

So here is what worked for me well to get any version of python installed with ansible and make it an alternative installation. I first ran configure and make, later compressed the result since this takes a while, then re-distributed the file using a mirror so I can run make altinstall on its own. Here is the recipe:

---
# Check the alt python3 version
- name: check alt python version
  shell: /usr/local/bin/python3.6 --version
  register: python3_version
  ignore_errors: yes  # If not installed
  tags:
    - python-alt

# Stuff I did manually to compile everything first by hand
# Python3 alt-install - steps to create binary:
# wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz
# tar xf Python-3.6.4.tgz
# mv Python-3.6.4 Python-3.6.4-binary && cd Python-3.6.4-binary
# ./configure --prefix=/usr/local --enable-optimizations
# cd .. && tar -zcvf Python-3.6.4-binary.tar.gz Python-3.6.4-binary (upload to mirror servers)
# make && sudo make altinstall UNINST=1
- name: download and unpack alternative python3
  unarchive:
    src: http://www.yourmirror.com/centos/python/Python-3.6.4-binary.tar.gz dest=/tmp/Python-3.6.4-binary.tar.gz
    dest: /tmp
    remote_src: yes
    keep_newer: yes
  when: python3_version['stderr'] != 'Python 3.6.4'
  tags:
    - python-alt

# Its possible to install (instead of altinstall) python3 here
- name: make install alt python3
  make:
    chdir: /tmp/Python-3.6.4-binary
    target: altinstall
    params:
      UNINST: 1  # Replace
  when: python3_version['stderr'] != 'Python 3.6.4'
  become: yes
  tags:
    - python-alt

- name: download get-pip.py
  get_url:
    url: https://bootstrap.pypa.io/get-pip.py
    dest: /tmp/get-pip.py
    mode: 0664
  tags:
    - python-alt

- name: install pip for python3
  shell: /usr/local/bin/python3.6 /tmp/get-pip.py
  become: yes
  tags:
    - python-alt

# We need virtualenv installed under py3 for the virtualenv command to work
- pip:
    name: virtualenv
    executable: /usr/local/bin/pip3.6
  become: True
  tags:
    - python-alt

If you want to compile everything on your server you could do the following before the altinstall step and also download the source code package instead of the pre-compiled tar. I don't recommend doing it this way because it does take up resources and you don't want to be doing it in prod. Using Python2.7.14 as an example:

---
# Build the default target
- debug:
    var: python2_version
  tags:
    - python_alt
- make:
    chdir: /tmp/Python-2.7.14-binary
  when: python2_version['stderr'] != 'Python 2.7.14'
  tags:
    - python_alt
- name: configure target command
  command: ./configure --prefix=/usr/local --enable-optimizations chdir=/tmp/Python-2.7.14-binary
  when: python2_version['stderr'] != alt_python_version
  tags:
    - python_alt