Host module

===========

Description

-----------

The host module allows to ensure presence, absence and disablement of hosts.

The host module is as compatible as possible to the Ansible upstream `ipa_host` module, but additionally offers to disable hosts.

Features

--------

* Host management

Supported FreeIPA Versions

--------------------------

FreeIPA versions 4.4.0 and up are supported by the ipahost module.

Requirements

------------

**Controller**

* Ansible version: 2.8+

**Node**

* Supported FreeIPA version (see above)

Usage

=====

Example inventory file

```ini

[ipaserver]

ipaserver.test.local

```

Example playbook to ensure host presence:

```yaml

---

- name: Playbook to handle hosts

  hosts: ipaserver

  become: true

  tasks:

  # Ensure host is present

  - ipahost:

      ipaadmin_password: SomeADMINpassword

      name: host01.example.com

      description: Example host

      ip_address: 192.168.0.123

      locality: Lab

      ns_host_location: Lab

      ns_os_version: CentOS 7

      ns_hardware_platform: Lenovo T61

      mac_address:

      - "08:00:27:E3:B1:2D"

      - "52:54:00:BD:97:1E"

      state: present

```

Compared to `ipa host-add` command no IP address conflict check is done as the ipahost module supports to have several IPv4 and IPv6 addresses for a host.

Example playbook to ensure host presence with several IP addresses:

```yaml

---

- name: Playbook to handle hosts

  hosts: ipaserver

  become: true

  tasks:

  # Ensure host is present

  - ipahost:

      ipaadmin_password: SomeADMINpassword

      name: host01.example.com

      description: Example host

      ip_address:

      - 192.168.0.123

      - 192.168.0.124

      - fe80::20c:29ff:fe02:a1b3

      - fe80::20c:29ff:fe02:a1b4

      locality: Lab

      ns_host_location: Lab

      ns_os_version: CentOS 7

      ns_hardware_platform: Lenovo T61

      mac_address:

      - "08:00:27:E3:B1:2D"

      - "52:54:00:BD:97:1E"

      state: present

```

Example playbook to ensure IP addresses are present for a host:

```yaml

---

- name: Playbook to handle hosts

  hosts: ipaserver

  become: true

  tasks:

  # Ensure host is present

  - ipahost:

      ipaadmin_password: SomeADMINpassword

      name: host01.example.com

      ip_address:

      - 192.168.0.124

      - fe80::20c:29ff:fe02:a1b4

      action: member

      state: present

```

Example playbook to ensure IP addresses are absent for a host:

```yaml

---

- name: Playbook to handle hosts

  hosts: ipaserver

  become: true

  tasks:

  # Ensure host is present

  - ipahost:

      ipaadmin_password: SomeADMINpassword

      name: host01.example.com

      ip_address:

      - 192.168.0.124

      - fe80::20c:29ff:fe02:a1b4

      action: member

      state: absent

```

Example playbook to ensure host presence without DNS:

```yaml

---

- name: Playbook to handle hosts

  hosts: ipaserver

  become: true

  tasks:

  # Ensure host is present without DNS

  - ipahost:

      ipaadmin_password: SomeADMINpassword

      name: host02.example.com

      description: Example host

      force: yes

```

Example playbook to ensure host presence with a random password:

```yaml

---

- name: Ensure host with random password

  hosts: ipaserver

  become: true

  tasks:

  - name: Host host01.example.com present with random password

    ipahost:

      ipaadmin_password: SomeADMINpassword

      name: host01.example.com

      random: yes

      force: yes

      update_password: on_create

    register: ipahost

  - name: Print generated random password

    debug:

      var: ipahost.host.randompassword

```

Please remember that a new random password will be generated for an existing but not enrolled host if `update_password` is not limited to `on_create`. For an already enrolled host the task will fail with `update_password` default setting `always`.

Example playbook to ensure presence of several hosts with a random password:

```yaml

---

- name: Ensure hosts with random password

  hosts: ipaserver

  become: true

  tasks:

  - name: Hosts host01.example.com and host01.example.com present with random passwords

    ipahost:

      ipaadmin_password: SomeADMINpassword

      hosts:

      - name: host01.example.com

        random: yes

        force: yes

        update_password: on_create

      - name: host02.example.com

        random: yes

        force: yes

        update_password: on_create

    register: ipahost

  - name: Print generated random password for host01.example.com

    debug:

      var: ipahost.host["host01.example.com"].randompassword

  - name: Print generated random password for host02.example.com

    debug:

      var: ipahost.host["host02.example.com"].randompassword

```

Please remember that a new random password will be generated for an existing but not enrolled host if `update_password` is not limited to `on_create`. For an already enrolled host the task will fail with `update_password` default setting `always`.

Example playbook to ensure presence of host member principal:

```yaml

---

- name: Host present with principal

  hosts: ipaserver

  become: true

  tasks:

  - name: Host host01.example.com present with principals host/testhost01.example.com and host/myhost01.example.com

    ipahost:

      ipaadmin_password: SomeADMINpassword

      name: host01.example.com

      principal:

      - host/testhost01.example.com

      - host/myhost01.example.com

      action: member

```

Example playbook to ensure presence of host member certificate:

```yaml

- name: Host present with certificate

  hosts: ipaserver

  become: true

  tasks:

  - name: Host host01.example.com present with certificate

    ipahost:

      ipaadmin_password: SomeADMINpassword

      name: host01.example.com

      certificate:

      - MIIC/zCCAeegAwIBAg...

      action: member

```

Example playbook to ensure presence of member managedby_host for serveral hosts:

```yaml

---

- name: Host present with managedby_host

  hosts: ipaserver

  become: true

  tasks:

    ipahost:

      ipaadmin_password: SomeADMINpassword

      hosts:

      - name: host01.exmaple.com

        managedby_host: server.exmaple.com

      - name: host02.exmaple.com

        managedby_host: server.exmaple.com

      action: member

```

Example playbook to disable a host:

```yaml

---

- name: Playbook to handle hosts

  hosts: ipaserver

  become: true

  tasks:

  # Ensure host is disabled

  - ipahost:

      ipaadmin_password: SomeADMINpassword

      name: host01.example.com

      update_dns: yes

      state: disabled

```

`update_dns` controls if the DNS entries will be updated in this case. For `state` present it is controlling the update of the DNS SSHFP records, but not the the other DNS records.

Example playbook to ensure a host is absent:

```yaml

---

- name: Playbook to handle hosts

  hosts: ipaserver

  become: true

  tasks:

  # Ensure host is absent

  - ipahost:

      ipaadmin_password: password1

      name: host01.example.com

      state: absent

```

Variables

=========

ipahost

-------

Variable | Description | Required

-------- | ----------- | --------

`ipaadmin_principal` | The admin principal is a string and defaults to `admin` | no

`ipaadmin_password` | The admin password is a string and is required if there is no admin ticket available on the node | no

`name` \| `fqdn` | The list of host name strings. `name` with *host variables* or `hosts` containing *host variables* need to be used. | no

**Host variables** | Only used with `name` variable in the first level. | no

`hosts` | The list of host dicts. Each `hosts` dict entry can contain **host variables**.
There is one required option in the `hosts` dict:| no

  | `name` \| `fqdn` - The user name string of the entry. | yes

  | **Host variables** | no

`update_password` |  Set password for a host in present state only on creation or always. It can be one of `always` or `on_create` and defaults to `always`. | no

`action` | Work on host or member level. It can be on of `member` or `host` and defaults to `host`. | no

`state` | The state to ensure. It can be one of `present`, `absent` or `disabled`, default: `present`. | yes

**Host Variables:**

Variable | Description | Required

-------- | ----------- | --------

`description` | The host description. | no

`locality` | Host locality (e.g. "Baltimore, MD"). | no

`location` \| `ns_host_location` | Host location (e.g. "Lab 2"). | no

`platform` \| `ns_hardware_platform` | Host hardware platform (e.g. "Lenovo T61"). | no

`os` \| `ns_os_version` | Host operating system and version (e.g. "Fedora 9"). | no

`password` \| `user_password` \| `userpassword` | Password used in bulk enrollment for absent or not enrolled hosts. | no

`random` \| `random_password` |  Initiate the generation of a random password to be used in bulk enrollment for absent or not enrolled hosts. | no

`certificate` \| `usercertificate` | List of base-64 encoded host certificates | no

`managedby` \| `principalname` \| `krbprincipalname` | List of hosts that can manage this host | no

`principal` \| `principalname` \| `krbprincipalname` | List of principal aliases for this host | no

`allow_create_keytab_user` \| `ipaallowedtoperform_write_keys_user` | Users allowed to create a keytab of this host. | no

`allow_create_keytab_group` \| `ipaallowedtoperform_write_keys_group` | Groups allowed to create a keytab of this host. | no

`allow_create_keytab_host` \| `ipaallowedtoperform_write_keys_host` | Hosts allowed to create a keytab of this host. | no

`allow_create_keytab_hostgroup` \| `ipaallowedtoperform_write_keys_hostgroup` | Host groups allowed to create a keytab of this host. | no

`allow_retrieve_keytab_user` \| `ipaallowedtoperform_read_keys_user` | Users allowed to retieve a keytab of this host. | no

`allow_retrieve_keytab_group` \| `ipaallowedtoperform_read_keys_group` | Groups allowed to retieve a keytab of this host. | no

`allow_retrieve_keytab_host` \| `ipaallowedtoperform_read_keys_host` | Hosts allowed to retieve a keytab of this host. | no

`allow_retrieve_keytab_hostgroup` \| `ipaallowedtoperform_read_keys_hostgroup` | Host groups allowed to retieve a keytab of this host. | no

`mac_address` \| `macaddress` | List of hardware MAC addresses. | no

`sshpubkey` \| `ipasshpubkey` | List of SSH public keys | no

`userclass` \| `class` | Host category (semantics placed on this attribute are for local interpretation) | no

`auth_ind` \| `krbprincipalauthind` | Defines a whitelist for Authentication Indicators. Use 'otp' to allow OTP-based 2FA authentications. Use 'radius' to allow RADIUS-based 2FA authentications. Use empty string to reset auth_ind to the initial value. Other values may be used for custom configurations. choices: ["radius", "otp", "pkinit", "hardened", ""] | no

`requires_pre_auth` \| `ipakrbrequirespreauth` | Pre-authentication is required for the service (bool) | no

`ok_as_delegate` \| `ipakrbokasdelegate` | Client credentials may be delegated to the service (bool) | no

`ok_to_auth_as_delegate` \| `ipakrboktoauthasdelegate` | The service is allowed to authenticate on behalf of a client (bool) | no

`force` | Force host name even if not in DNS. | no

`reverse` | Reverse DNS detection. | no

`ip_address` \| `ipaddress` | The host IP address list. It can contain IPv4 and IPv6 addresses. No conflict check for IP addresses is done. | no

`update_dns` | For existing hosts: DNS SSHFP records are updated with `state` present and all DNS entries for a host removed with `state` absent. | no

Return Values

=============

ipahost

-------

There are only return values if one or more random passwords have been generated.

Variable | Description | Returned When

-------- | ----------- | -------------

`host` | Host dict with random password. (dict) 
Options: | If random is yes and host did not exist or update_password is yes

  | `randompassword` - The generated random password | If only one host is handled by the module

  | `name` - The host name of the host that got a new random password. (dict) 
 Options: 
   `randompassword` - The generated random password | If several hosts are handled by the module

Authors

=======

Thomas Woerner