README.md

ipareplica role
==============

Description
-----------

This role allows to configure a new IPA server that is a replica of the server. Once it has been created it is an exact copy of the original IPA server and is an equal  master.
Changes made to any master are automatically replicated to other masters.

This can be done in differnt ways using auto-discovery of the servers, domain and other settings or by specifying them.

**Note**: The ansible playbooks and role require a configured ansible environment where the ansible nodes are reachable and are properly set up to have an IP address and a working package manager.


Features
--------
* Replica deployment


Supported FreeIPA Versions
--------------------------

FreeIPA versions 4.6 and up are supported by the replica role.


Supported Distributions
-----------------------

* RHEL/CentOS 7.6+
* Fedora 26+
* Ubuntu


Requirements
------------

**Controller**
* Ansible version: 2.8+

**Node**
* Supported FreeIPA version (see above)
* Supported distribution (needed for package installation only, see above)


Usage
=====

Example inventory file with fixed principal using auto-discovery with DNS records:

    [ipareplicas]
    ipareplica1.example.com
    ipareplica2.example.com
    
    [ipareplicas:vars]
    ipaadmin_principal=admin

Example playbook to setup the IPA client(s) using principal from inventory file and password from an [Ansible Vault](http://docs.ansible.com/ansible/latest/playbooks_vault.html) file:

    - name: Playbook to configure IPA replicas
      hosts: ipareplicas
      become: true
      vars_files:
      - playbook_sensitive_data.yml
    
      roles:
      - role: ipareplica
        state: present

Example playbook to unconfigure the IPA client(s) using principal and password from inventory file:

    - name: Playbook to unconfigure IPA replicas
      hosts: ipareplicas
      become: true
    
      roles:
      - role: ipareplica
        state: absent

Example inventory file with fixed server, principal, password and domain:

    [ipaserver]
    ipaserver.example.com
    
    [ipareplicas]
    ipareplica1.example.com
    ipareplica2.example.com
    
    [ipareplicas:vars]
    ipaclient_domain=example.com
    ipaadmin_principal=admin
    ipaadmin_password=MySecretPassword123
    ipadm_password=MySecretPassword456

Example playbook to setup the IPA client(s) using principal and password from inventory file:

    - name: Playbook to configure IPA replicas with username/password
      hosts: ipareplicas
      become: true
    
      roles:
      - role: ipareplica
        state: present


Playbooks
=========

The playbooks needed to deploy or undeploy a replica are part of the repository in the playbooks folder. There are also playbooks to deploy and undeploy clusters.
```
install-replica.yml
uninstall-replica.yml
```
Please remember to link or copy the playbooks to the base directory of ansible-freeipa if you want to use the roles within the source archive.


How to setup replicas
---------------------

```bash
ansible-playbook -v -i inventory/hosts install-replica.yml
```
This will deploy the replicas defined in the inventory file.


Variables
=========

Base Variables
--------------

Variable | Description | Required
-------- | ----------- | --------
`ipaservers` | This group with the IPA master full qualified hostnames. (list of strings) | mostly
`ipareplicas` | Group of IPA replica hostnames. (list of strings) | yes
`ipaadmin_password` | The password for the IPA admin user (string) | mostly
`ipareplica_ip_addresses` | The list of master server IP addresses. (list of strings) | no
`ipareplica_domain` | The primary DNS domain of an existing IPA deployment. (string) | no
`ipaserver_realm` | The Kerberos realm of an existing IPA deployment. (string) | no
`ipaserver_hostname` | Fully qualified name of the server. (string) | no
`ipaadmin_principal` | The authorized kerberos principal used to join the IPA realm. (string) | no
`ipareplica_no_host_dns` | Do not use DNS for hostname lookup during installation. (bool, default: false) | no
`ipareplica_skip_conncheck` | Skip connection check to remote master. (bool, default: false) | no

Server Vaiables
---------------

Variable | Description | Required
-------- | ----------- | --------
`ipadm_password` | The password for the Directory Manager. (string) | mostly
`ipareplica_setup_adtrust` | Configure AD trust capability. (bool, default: false) | no
`ipareplica_setup_ca` | Configure a dogtag CA. (bool, default: false) | no
`ipareplica_setup_kra` | Configure a dogtag KRA. (bool, default: false) | no
`ipareplica_setup_dns` | Configure bind with our zone. (bool, default: false) | no
`ipareplica_no_pkinit` | Disables pkinit setup steps. (bool, default: false) | no
`ipareplica_no_ui_redirect` | Do not automatically redirect to the Web UI. (bool, default: false) | no
`ipareplica_dirsrv_config_file` | The path to LDIF file that will be used to modify configuration of dse.ldif during installation of the directory server instance. (string)| no

SSL certificate Variables
-------------------------

Variable | Description | Required
-------- | ----------- | --------
`ipareplica_dirsrv_cert_files` | Files containing the Directory Server SSL certificate and private keys. (list of strings) | no
`ipareplica_http_cert_file` | File containing the Apache Server SSL certificate and private key. (string) | no
`ipareplica_pkinit_cert_file` | File containing the Kerberos KDC SSL certificate and private key. (string) | no
`ipareplica_dirsrv_pin` | The password to unlock the Directory Server private key. (string) | no
`ipareplica_http_pin` | The password to unlock the Apache Server private key. (string) | no
`ipareplica_pkinit_pin` | The password to unlock the Kerberos KDC private key. (string) | no
`ipareplica_dirsrv_cert_name` | Name of the Directory Server SSL certificate to install. (string) | no
`ipareplica_http_cert_name` | Name of the Apache Server SSL certificate to install. (string) | no
`ipareplica_pkinit_cert_name` | Name of the Kerberos KDC SSL certificate to install. (string) | no

Client Variables
----------------

Variable | Description | Required
-------- | ----------- | --------
`ipaclient_keytab` | Path to backed up keytab from previous enrollment. (string) | no
`ipaclient_mkhomedir` | Set to yes to configure PAM to create a users home directory if it does not exist. (string) | no
`ipaclient_force_join` | Force client enrollment even if already enrolled. (bool, default: false) | no
`ipaclient_ntp_servers` | The list defines the NTP servers to be used. (list of strings) | no
`ipaclient_ntp_pool` | The string value defines the ntp server pool to be used. (string) | no
`ipaclient_no_ntp` | The bool value defines if NTP will not be configured and enabled. (bool, default: false) | no
`ipaclient_ssh_trust_dns` | The bool value defines if OpenSSH client will be configured to trust DNS SSHFP records. (bool, default: false) | no
`ipaclient_no_ssh` | The bool value defines if OpenSSH client will be configured. (bool, default: false) | no
`ipaclient_no_sshd` | The bool value defines if OpenSSH server will be configured. (bool, default: false) | no
`ipaclient_no_sudo` | The bool value defines if SSSD will be configured as a data source for sudo. (bool, default: false) | no
`ipaclient_no_dns_sshfp` | The bool value defines if DNS SSHFP records will not be created automatically. (bool, default: false) | no

Certificate system Variables
----------------------------

Variable | Description | Required
-------- | ----------- | --------
~~`ipareplica_skip_schema_check`~~ | ~~Skip check for updated CA DS schema on the remote master. (bool, default: false)~~ | ~~no~~

DNS Variables
-------------

Variable | Description | Required
-------- | ----------- | --------
`ipareplica_allow_zone_overlap` | Allow creation of (reverse) zone even if the zone is already resolvable. (bool, default: false) | no
`ipareplica_reverse_zones` | The reverse DNS zones to use. (list of strings) | no
`ipareplica_no_reverse` | Do not create reverse DNS zone. (bool, default: false) | no
`ipareplica_auto_reverse` | Try to resolve reverse records and reverse zones for server IP addresses. (bool, default: false) | no
`ipareplica_zonemgr` | The e-mail address of the DNS zone manager. (string, default: hostmaster@DOMAIN.) | no
`ipareplica_forwarders` | Add DNS forwarders to the DNS configuration. (list of strings) | no
`ipareplica_no_forwarders` | Do not add any DNS forwarders. Root DNS servers will be used instead. (bool, default: false) | no
`ipareplica_auto_forwarders` | Add DNS forwarders configured in /etc/resolv.conf to the list of forwarders used by IPA DNS. (bool, default: false) | no
`ipareplica_forward_policy` | DNS forwarding policy for global forwarders specified using other options. (choice: first,only) | no
`ipareplica_no_dnssec_validation` | Disable DNSSEC validation on this server. (bool, default: false) | no

AD trust Variables
------------------

Variable | Description | Required
-------- | ----------- | --------
~~`ipareplica_add_sids`~~ | ~~Add SIDs for existing users and groups as the final step. (bool, default: false)~~ | ~~no~~
~~`ipareplica_add_agents`~~ | ~~Add IPA masters to a list of hosts allowed to serve information about users from trusted forests. (bool, default: false)~~ | ~~no~~
`ipareplica_enable_compat`| Enables support for trusted domains users for old clients through Schema Compatibility plugin. (bool, default: false) | no
`ipareplica_netbios_name` | The NetBIOS name for the IPA domain. (string) | no
`ipareplica_rid_base` | First RID value of the local domain. (integer) | no
`ipareplica_secondary_rid_base` | Start value of the secondary RID range. (integer) | no

Cluster Specific Variables
--------------------------

Variable | Description | Required
-------- | ----------- | --------
`ipareplica_servers` | Manually override list of servers for example in a cluster environment on a per replica basis. The list of servers is normally taken from from groups.ipaserver in cluster environments. (list of strings) | no
`ipaserver_domain` | Used if set in a cliuster environment to overload `ipareplica_domain` | no

Special Variables
-----------------

Variable | Description | Required
-------- | ----------- | --------
`ipareplica_install_packages` | The bool value defines if the needed packages are installed on the node. (bool, default: true) | no
`ipareplica_setup_firewalld` | The value defines if the needed services will automatically be openen in the firewall managed by firewalld. (bool, default: true) | no


Authors
=======

Thomas Woerner