Ansible Role SSHD

Ansible role l3d.users.sshd to Manage SSHD Configuration of the system and which Accounts are allowed to login.

WORK IN PROGRESS

There are two variables to define users. The l3d_users__default_users is ment to put to your group_vars to define a default for your system. The l3d_users__local_users could be put in your host_vars to define host-specific user and admin roles.

Variables:

User Management

The dictionary-variable for your group_vars to set your general users and admins is l3d_users__default_users.
The dictionary-variable for your host_vars to set your host-specific users and admins is: l3d_users__local_users. The Option of these directory-variables are the following.

option	values	description
name	string	The user you want to create
state	`present`	Create or delete user
shell	`/bin/bash`	The Shell of the User
create_home	`true`	create a user home (needed to store ssh keys)
admin	`false`	enable it to give the user superpowers
admin_commands	string or list	Commands that are allows to be run as admin, eg. 'ALL' or specific script
admin_nopassword	false	Need no Password for sudo
pubkeys	string or lookup	see examples
exklusive_pubkeys	`true`	delete all undefined ssh keys
password	password hash	See official FAQ
remove	`false`	completly remove user if state is absent

There is a third directory-variable called l3d_users__ssh_login: [] which only support name and state for users, that sould be able to login on that system.

Other Variables

name	default value	description
`submodules_versioncheck`	`false`	Optionaly enable simple versionscheck of this role
`l3d_users__limit_login`	`true`	Only allow SSH login for specified users
`l3d_users__sshd_port`	`22`	Port for SSH
`l3d_users__sshd_password_authentication`	`false`	Allow login with Password
`l3d_users__sshd_permitrootlogin`	`false`	Allow login as root
`l3d_users__create_ansible`	`true`	Create Ansible User
`l3d_users__ansible_user_state`	`present`	Ansible User State
`l3d_users__sshd_manage_server_key_types`	`true`	Manage Server SSH Key types
`l3d_users__sshd_server_key_types`	`['ed25519']`	List of supported SSH Key Types
`l3d_users__sshd_manage_key_algorithmus`	`true`	Manage SSH Key Algorythmins
`l3d_users__sshd_key_algorithmus`	`['ssh-ed25519-cert-v01@openssh.com', 'ssh-ed25519', 'ecdsa-sha2-nistp521-cert-v01@openssh.com', 'ecdsa-sha2-nistp384-cert-v01@openssh.com', 'ecdsa-sha2-nistp256-cert-v01@openssh.com']`	Used SSH Key Algorithms
`l3d_users__sshd_manage_kex_algorithmus`	`true`	Manage SSH Kex Algorythms
`l3d_users__sshd_kex_algorithmus`	`['curve25519-sha256@libssh.org', 'diffie-hellman-group-exchange-sha256', 'diffie-hellman-group-exchange-sha1']`	Used Kex Algorythms
`l3d_users__sshd_manage_ciphers`	`true`	Manage SSH Ciphers
`l3d_users__sshd_ciphers`	`['chacha20-poly1305@openssh.com', 'aes256-gcm@openssh.com', 'aes256-ctr']`	Used SSH Ciphers
`l3d_users__sshd_manage_macs`	`true`	Manage Used MACs
`l3d_users__sshd_macs`	`['hmac-sha2-512-etm@openssh.com', 'hmac-sha2-256-etm@openssh.com', 'hmac-sha2-512']`	Used MACs
`l3d_users__sshd_xforwarding`	`true`	Enable X-Forwarding

run simple versionscheck

submodules_versioncheck: false

Example Playbook

- name: Create System with User and Passwords
  hosts: example.com
  roles:
    - {role: l3d.users.sshd, tags: 'sshd'}
  vars:
    l3d_users__local_users:
      - name: 'alice'
        state: 'present'
      - name: 'bob'
        state: 'present'
    l3d_users__ssh_login:
      - name: 'charlie'
        state: 'present'

    l3d_users__limit_login: true
    l3d_users__create_ansible: true
    submodules_versioncheck: true

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