fail2ban

Install and configure fail2ban on your system.

GitHub	GitLab	Quality	Downloads	Version

Example Playbook

This example is taken from molecule/resources/converge.yml and is tested on each push, pull request and release.

---
- name: Converge
  hosts: all
  become: yes
  gather_facts: yes

  roles:
    - role: robertdebock.fail2ban

The machine needs to be prepared in CI this is done using molecule/resources/prepare.yml:

---
- name: Prepare
  hosts: all
  gather_facts: no
  become: yes

  roles:
    - role: robertdebock.bootstrap
    - role: robertdebock.epel

Also see a full explanation and example on how to use these roles.

Role Variables

These variables are set in defaults/main.yml:

---
# defaults file for fail2ban

fail2ban_loglevel: INFO
fail2ban_logtarget: /var/log/fail2ban.log

fail2ban_ignoreself: "true"
fail2ban_ignoreips: "127.0.0.1/8 ::1"

# In seconds
fail2ban_bantime: 600
fail2ban_findtime: 600

fail2ban_maxretry: 5
fail2ban_destemail: root@localhost
fail2ban_sender: root@{{ ansible_fqdn }}

fail2ban_configuration: []
#  - option: loglevel
#    value: "INFO"
#    section: Definition

fail2ban_jail_configuration: []
#  - option: ignoreself
#    value: "true"
#    section: DEFAULT

Requirements

pip packages listed in requirements.txt.

Status of requirements

The following roles are used to prepare a system. You may choose to prepare your system in another way, I have tested these roles as well.

Requirement	GitHub	GitLab
robertdebock.bootstrap
robertdebock.epel

Context

This role is a part of many compatible roles. Have a look at the documentation of these roles for further information.

Here is an overview of related roles:

Compatibility

This role has been tested on these container images:

container	tags
amazon	Candidate
el	7, 8
debian	buster, bullseye
fedora	all
ubuntu	focal, bionic

The minimum version of Ansible required is 2.10, tests have been done to:

The previous version.
The current version.
The development version.

Exceptions

Some variarations of the build matrix do not work. These are the variations and reasons why the build won't work:

variation	reason
alpine	Service `fail2ban' needs non existent service` logger'
amazonlinux:1	Based on EL6, not supported since 2020Q4.
opensuse	The package fail2ban depends on python2, we switched to python3.