How to pass password to Ansible from environment variable

There is an idea that passing secrets via environment variables is more safe, than passing it via command line.

Ansible has few methods to accept password:

• Store it somewhere in…

pytest.fail in a fixture and in a test

A subtle difference between ERROR and FAIL

I found one amazing property of the pytest recently. If you call pytest.fail inside a test, it’s a FAIL status for that test (or XFAIL, if it has xfail mark).

How to break from the loop in Ansible

Generally, it thought to be impossible. But if you really want to, you can.

The problem

To stop Ansible loop if one of the calls to the module returned changed. Basically, to write in Ansnible this:

The magic of run_once

There is a particular directive in the Ansible: run_once. If it’s used at a play level, it’s the same as changing hosts: foo to hosts: foo[0] . Convenient, but not intriguing.

There is a second place to use it: in a task. Any task can have ‘run_once’. And magic…

Choosing between testinfra and Ansible for tests

How to get index of the element in the list in Jinja

There is no filter, only method

Duality of python methods VS jinja filters is maddening. There is a problem: I need to get index of the first occurrence of the element in a list.

How to list all host variables in Ansible?

Normally people tell you about:

ansible -m setup all

But this thing displays only facts from setup module, and not the variables from inventory and/or group_vars.

How to get directory with test from fixture in conftest.py

When I put my fixtures into conftest.py (which is the preferable way to reuse fixtures within a project), I stumble on one minor issue, is that fixture can’t use __file__ anymore to find directory where file is present.

Overclocking monitor in Linux

I made 60 Hz monitor to run at 80 Hz at max resolution