fail2ban

Install and configure fail2ban on your system.

Travis	GitHub	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 may need to be prepared using molecule/resources/prepare.yml:

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

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

For verification molecule/resources/verify.yml runs after the role has been applied.

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

  tasks:
    - name: check if connection still works
      ping:

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

Access to a repository containing packages, likely on the internet.
A recent version of Ansible. (Tests run on the current, previous and next release of Ansible.)

The following roles can be installed to ensure all requirements are met, using ansible-galaxy install -r requirements.yml:

---
- 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	2018.03
el	7, 8
debian	buster, bullseye
fedora	31, 32
opensuse	all
ubuntu	focal, bionic, xenial

The minimum version of Ansible required is 2.8 but tests have been done to:

The previous version, on version lower.
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	file /etc/ethertypes conflicts between attempted installs of ebtables-2.0.10-16.amzn2.x86_64 and iptables-1.8.2-16.amzn2.0.1.x86_64

Testing

Unit tests are done on every commit, pull request, release and periodically.

If you find issues, please register them in GitHub

Testing is done using Tox and Molecule:

Tox tests multiple ansible versions. Molecule tests multiple distributions.

To test using the defaults (any installed ansible version, namespace: robertdebock, image: fedora, tag: latest):

molecule test

# Or select a specific image:
image=ubuntu molecule test
# Or select a specific image and a specific tag:
image="debian" tag="stable" tox

Or you can test multiple versions of Ansible, and select images: Tox allows multiple versions of Ansible to be tested. To run the default (namespace: robertdebock, image: fedora, tag: latest) tests:

tox

# To run CentOS (namespace: `robertdebock`, tag: `latest`)
image="centos" tox
# Or customize more:
image="debian" tag="stable" tox

License

Apache-2.0

Contributors

I'd like to thank everybody that made contributions to this repository. It motivates me, improves the code and is just fun to collaborate.

j8r
rgevaert

Author Information

Robert de Bock

Please consider sponsoring me.

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