How to Install python3.4.3 with Ansible - python-3.x

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

Answer 2

Rather than using the shell module to set environment variables on the remote host, Ansible has the environment keyword, which can set per task or even per playbook.
Assuming the www user already exists I managed to get this working with some more specific path setting:
- name: enable pyenv and install python
shell: /home/www/.pyenv/bin/pyenv init - && /home/www/.pyenv/bin/pyenv install 3.4.3 chdir=/home/www
environment:
pyenv_root: /home/www/.pyenv
path: "{{ pyenv_root }}/bin:$PATH"
become: yes
become_user: www
You will need to run the playbook with:
ansible-playbook --ask-become-pass <playbook-name>
and supply the password for the www user on request.
If that doesn't work, you might have to post the whole playbook here for us to look at :)