ansible.builtin.openssh_cert (v2.9.27) — module

Generate OpenSSH host or user certificates.

| "added in version" 2.8 of ansible.builtin"

Authors: David Kainz (@lolcube)

preview | supported by community

Install Ansible via pip

Install with pip install ansible==2.9.27

Description

Generate and regenerate OpenSSH host or user certificates.


Requirements

Usage examples

  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
# Generate an OpenSSH user certificate that is valid forever and for all users
- openssh_cert:
    type: user
    signing_key: /path/to/private_key
    public_key: /path/to/public_key.pub
    path: /path/to/certificate
    valid_from: always
    valid_to: forever
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
# Generate an OpenSSH host certificate that is valid for 32 weeks from now and will be regenerated
# if it is valid for less than 2 weeks from the time the module is being run
- openssh_cert:
    type: host
    signing_key: /path/to/private_key
    public_key: /path/to/public_key.pub
    path: /path/to/certificate
    valid_from: +0s
    valid_to: +32w
    valid_at: +2w
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
# Generate an OpenSSH host certificate that is valid forever and only for example.com and examplehost
- openssh_cert:
    type: host
    signing_key: /path/to/private_key
    public_key: /path/to/public_key.pub
    path: /path/to/certificate
    valid_from: always
    valid_to: forever
    principals:
        - example.com
        - examplehost
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
# Generate an OpenSSH host Certificate that is valid from 21.1.2001 to 21.1.2019
- openssh_cert:
    type: host
    signing_key: /path/to/private_key
    public_key: /path/to/public_key.pub
    path: /path/to/certificate
    valid_from: "2001-01-21"
    valid_to: "2019-01-21"
  • Success
    Steampunk Spotter scan finished with no errors, warnings or hints.
# Generate an OpenSSH user Certificate with clear and force-command option:
- openssh_cert:
    type: user
    signing_key: /path/to/private_key
    public_key: /path/to/public_key.pub
    path: /path/to/certificate
    valid_from: always
    valid_to: forever
    options:
        - "clear"
        - "force-command=/tmp/bla/foo"

Inputs

    
mode:
    description:
    - The permissions the resulting filesystem object should have.
    - For those used to I(/usr/bin/chmod) remember that modes are actually octal numbers.
      You must give Ansible enough information to parse them correctly. For consistent
      results, quote octal numbers (for example, V('644') or V('1777')) so Ansible receives
      a string and can do its own conversion from string into number. Adding a leading
      zero (for example, V(0755)) works sometimes, but can fail in loops and some other
      circumstances.
    - Giving Ansible a number without following either of these rules will end up with
      a decimal number which will have unexpected results.
    - As of Ansible 1.8, the mode may be specified as a symbolic mode (for example, V(u+rwx)
      or V(u=rw,g=r,o=r)).
    - If O(mode) is not specified and the destination filesystem object B(does not) exist,
      the default C(umask) on the system will be used when setting the mode for the newly
      created filesystem object.
    - If O(mode) is not specified and the destination filesystem object B(does) exist,
      the mode of the existing filesystem object will be used.
    - Specifying O(mode) is the best way to ensure filesystem objects are created with
      the correct permissions. See CVE-2020-1736 for further details.
    type: raw

path:
    description:
    - Path of the file containing the certificate.
    required: true
    type: path

type:
    choices:
    - host
    - user
    description:
    - Whether the module should generate a host or a user certificate.
    - Required if I(state) is C(present).
    type: str

force:
    default: false
    description:
    - Should the certificate be regenerated even if it already exists and is valid.
    type: bool

group:
    description:
    - Name of the group that should own the filesystem object, as would be fed to I(chown).
    - When left unspecified, it uses the current group of the current user unless you
      are root, in which case it can preserve the previous ownership.
    type: str

owner:
    description:
    - Name of the user that should own the filesystem object, as would be fed to I(chown).
    - When left unspecified, it uses the current user unless you are root, in which case
      it can preserve the previous ownership.
    - Specifying a numeric username will be assumed to be a user ID and not a username.
      Avoid numeric usernames to avoid this confusion.
    type: str

state:
    choices:
    - present
    - absent
    default: present
    description:
    - Whether the host or user certificate should exist or not, taking action if the state
      is different from what is stated.
    type: str

serole:
    description:
    - The role part of the SELinux filesystem object context.
    - When set to V(_default), it will use the C(role) portion of the policy if available.
    type: str

setype:
    description:
    - The type part of the SELinux filesystem object context.
    - When set to V(_default), it will use the C(type) portion of the policy if available.
    type: str

seuser:
    description:
    - The user part of the SELinux filesystem object context.
    - By default it uses the V(system) policy, where applicable.
    - When set to V(_default), it will use the C(user) portion of the policy if available.
    type: str

options:
    description:
    - 'Specify certificate options when signing a key. The option that are valid for user
      certificates are:'
    - 'C(clear): Clear all enabled permissions.  This is useful for clearing the default
      set of permissions so permissions may be added individually.'
    - 'C(force-command=command): Forces the execution of command instead of any shell
      or command specified by the user when the certificate is used for authentication.'
    - 'C(no-agent-forwarding): Disable ssh-agent forwarding (permitted by default).'
    - 'C(no-port-forwarding): Disable port forwarding (permitted by default).'
    - 'C(no-pty Disable): PTY allocation (permitted by default).'
    - 'C(no-user-rc): Disable execution of C(~/.ssh/rc) by sshd (permitted by default).'
    - 'C(no-x11-forwarding): Disable X11 forwarding (permitted by default)'
    - 'C(permit-agent-forwarding): Allows ssh-agent forwarding.'
    - 'C(permit-port-forwarding): Allows port forwarding.'
    - 'C(permit-pty): Allows PTY allocation.'
    - 'C(permit-user-rc): Allows execution of C(~/.ssh/rc) by sshd.'
    - 'C(permit-x11-forwarding): Allows X11 forwarding.'
    - 'C(source-address=address_list): Restrict the source addresses from which the certificate
      is considered valid. The C(address_list) is a comma-separated list of one or more
      address/netmask pairs in CIDR format.'
    - At present, no options are valid for host keys.
    elements: str
    type: list

selevel:
    description:
    - The level part of the SELinux filesystem object context.
    - This is the MLS/MCS attribute, sometimes known as the C(range).
    - When set to V(_default), it will use the C(level) portion of the policy if available.
    type: str

valid_at:
    description:
    - Check if the certificate is valid at a certain point in time. If it is not the certificate
      will be regenerated. Time will always be interpreted as UTC. Mainly to be used with
      relative timespec for I(valid_from) and / or I(valid_to). Note that if using relative
      time this module is NOT idempotent.
    type: str

valid_to:
    description:
    - 'The point in time the certificate is valid to. Time can be specified either as
      relative time or as absolute timestamp. Time will always be interpreted as UTC.
      Valid formats are: C([+-]timespec | YYYY-MM-DD | YYYY-MM-DDTHH:MM:SS | YYYY-MM-DD
      HH:MM:SS | forever) where timespec can be an integer + C([w | d | h | m | s]) (e.g.
      C(+32w1d2h). Note that if using relative time this module is NOT idempotent.'
    - Required if I(state) is C(present).
    type: str

attributes:
    aliases:
    - attr
    description:
    - The attributes the resulting filesystem object should have.
    - To get supported flags look at the man page for I(chattr) on the target system.
    - This string should contain the attributes in the same order as the one displayed
      by I(lsattr).
    - The C(=) operator is assumed as default, otherwise C(+) or C(-) operators need to
      be included in the string.
    type: str
    version_added: '2.3'
    version_added_collection: ansible.builtin

identifier:
    description:
    - Specify the key identity when signing a public key. The identifier that is logged
      by the server when the certificate is used for authentication.
    type: str

principals:
    description:
    - Certificates may be limited to be valid for a set of principal (user/host) names.
      By default, generated certificates are valid for all users or hosts.
    elements: str
    type: list

public_key:
    description:
    - The path to the public key that will be signed with the signing key in order to
      generate the certificate.
    - Required if I(state) is C(present).
    type: path

valid_from:
    description:
    - 'The point in time the certificate is valid from. Time can be specified either as
      relative time or as absolute timestamp. Time will always be interpreted as UTC.
      Valid formats are: C([+-]timespec | YYYY-MM-DD | YYYY-MM-DDTHH:MM:SS | YYYY-MM-DD
      HH:MM:SS | always) where timespec can be an integer + C([w | d | h | m | s]) (e.g.
      C(+32w1d2h). Note that if using relative time this module is NOT idempotent.'
    - Required if I(state) is C(present).
    type: str

signing_key:
    description:
    - The path to the private openssh key that is used for signing the public key in order
      to generate the certificate.
    - Required if I(state) is C(present).
    type: path

serial_number:
    description:
    - 'Specify the certificate serial number. The serial number is logged by the server
      when the certificate is used for authentication. The certificate serial number may
      be used in a KeyRevocationList. The serial number may be omitted for checks, but
      must be specified again for a new certificate. Note: The default value set by ssh-keygen
      is 0.'
    type: int

unsafe_writes:
    default: false
    description:
    - Influence when to use atomic operation to prevent data corruption or inconsistent
      reads from the target filesystem object.
    - By default this module uses atomic operations to prevent data corruption or inconsistent
      reads from the target filesystem objects, but sometimes systems are configured or
      just broken in ways that prevent this. One example is docker mounted filesystem
      objects, which cannot be updated atomically from inside the container and can only
      be written in an unsafe manner.
    - This option allows Ansible to fall back to unsafe methods of updating filesystem
      objects when atomic operations fail (however, it doesn't force Ansible to perform
      unsafe writes).
    - IMPORTANT! Unsafe writes are subject to race conditions and can lead to data corruption.
    type: bool
    version_added: '2.2'
    version_added_collection: ansible.builtin

Outputs

filename:
  description: path to the certificate
  returned: changed or success
  sample: /tmp/certificate-cert.pub
  type: str
info:
  description: Information about the certificate. Output of C(ssh-keygen -L -f).
  elements: str
  returned: change or success
  type: list
type:
  description: type of the certificate (host or user)
  returned: changed or success
  sample: host
  type: str