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Ansible Role SSHD

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

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 required description
name string required 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
admin_ansible_login true - if admin: true and l3d_users__create_ansible: true your ssh keys will be added to ansible user
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: 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
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
submodules_versioncheck false Optionaly enable simple versionscheck of this role

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