gantsign.zram_config

Ansible Role: Zram Config

This role helps you set up Zram Config to use compressed RAM for swap memory.

Notice: This role is now outdated. Please use gantsign.zswap instead.

Requirements

Ansible version 2.7 or higher
A compatible Linux Distribution, specifically in the Debian family:
- Ubuntu versions:
  - Xenial (16.04)
  - Bionic (18.04)
- Other versions may work but haven't been tested.

Role Variables

You can adjust the following settings (default values are listed):

# Sets the minimum free RAM to avoid system freeze.
# e.g. 65536
zram_config_min_free_kbytes:

# A percentage from 0 to 100. A lower value reduces swap usage and system freezes.
# e.g. 10
zram_config_swappiness:

Example Playbook

Here’s how to use the role in a playbook:

- hosts: servers
  roles:
    - role: gantsign.zram_config
      zram_config_min_free_kbytes: 65536
      zram_config_swappiness: 10

More Roles From GantSign

You can find additional roles by GantSign on Ansible Galaxy.

Development & Testing

This project uses Molecule for development and testing. It also uses Testinfra and pytest for unit testing.

To develop or test, you need to have the following installed:

A Linux OS (like Ubuntu)
Docker
Python along with python-pip
Ansible
Molecule

To simplify installation, this project includes a tool called Molecule Wrapper. It’s a script that installs Molecule and its dependencies (except Linux) and runs Molecule with your commands.

To test the role with Molecule Wrapper, run the following command from the project main directory: