Ansible Role: SSH

Install and configure SSH server and client.

Requirements

An Ansible 2.2 or higher installation.

Role Variables

Available variables are listed below, along with default values (see defaults/main.yml).

ssh_client_packages:
  - openssh-client

Packages to install to provide SSH client functionalities.

ssh_server_packages:
  - openssh-server

Packages to install to provide SSH server functionalities.

ssh_client_config: {}

Dictionary holding SSH client configuration. The complete SSH client configuration reference can be found here.
NOTE: the provided SSH client configuration will be merged with the default one defined in vars/main.yml.

ssh_server_config: {}

Dictionary holding SSH server configuration. The complete SSH server configuration reference can be found here.
NOTE: the provided SSH server configuration will be merged with the default one defined in vars/main.yml.

ssh_rebuild_moduli: yes

Rebulild /etc/ssh/moduli file that contain primes for Diffie-Hellman Group Exchange (DH-GEX).
NOTE: the role records a ssh.ssh_moduli_rebuilt local fact in order not to rebuild /etc/ssh/moduli at every run.

ssh_moduli_bits: 4096

Number of bits for DH-GEX primes.

ssh_rebuild_host_keys: yes

Rebuild SSH host keys.
NOTE: the role records a ssh.ssh_host_keys_rebuilt local fact in order not to rebuild SSH host keys at every run.

ssh_host_keys_bits:
  ed25519: 512  # Ed25519 keys have fixed length, number of bits is ignored
  rsa: 4096

Dictionary holding key type and length of SSH public keys to be created.

Dependencies

config_encoder_filters

Example Playbook

- name: Install and configure SSH on all hosts.
  hosts: all
  roles:
     - config_encoder_filters
     - lnovara.ssh

Testing

This role uses molecule to implement automatic testing of its functionalities.

To execute the tests

pip install tox

git clone https://github.com/lnovara/ansible-ssh.git

cd ansible-ssh

# test all the scenarios
tox

License

MIT

Author Information

Luca Novara