lilik_playbook/roles/ssh_server

Role: ssh_server

This role congigure an OpenSSH server configured with certifcates provided by a local ca_manager instance.

Root password login in disabled and certificate authentication is enabled for users with certificate issued by the authorized authorities, listed in the variables user_ca_keys.

For the role to work the local certification authority must be configured and reachable from the Ansible controller machine.

The local user must be able to automatically login as the request use to the ca_manager instance.

Configuration variables

Name	Description
user_ca_keys*	List of allowed CA certificate. First entry is the default one.
server_fqdn	Used for the host certificate. [$host.$domain]

**Note: The ca_manager instance should be present in the inventory.

Minimal example

group_vars/all.yaml:

---
domain: 'example.com'
user_ca_keys:
 - 'ssh-ed25519 ############## Production CA'
 - 'ssh-ed25519 ############## Backup CA'

hosts:

vm_gateay             ansible_host=10.0.2.1   ansible_user=root
authorities_request   ansible_host=10.0.1.8   ansible_user=request
host1                 ansible_host=10.0.1.1   ansible_user=root
virtual1              ansible_host=10.0.2.2   ansible_user=root    ansible_lxc_host=host1

playbook.yaml:

---
# Configure SSH on a Physical Host
- hosts: host1
  roles:
    - role: ssh_server

# Configure SSH on a new LXC Guest with ssh_lxc proxy
- hosts: virtual1
  gather_facts: false # host may not exist yet
  tasks:
    - import_role: name='lxc_guest'
      vars:
       vm_name: '{{ inventory_hostname }}'
       vm_size: '1G'
      delegate_to: '{{ ansible_lxc_host }}'
    - set_fact: ansible_connection='ssh_lxc'
	- setup: # gather facts
	- include_role: name='ssh_server'
	# Now the guest is ssh-reachable, don't need proxy anymore.
	- set_fact: ansible_connection='ssh'

Command line:

ansible-playbook -i hosts playbook.yaml

Requirements

On Ansible controller:

• tasks/ca-dialog.yaml