
================
Barbican formula
================

Barbican is a REST API designed for the secure storage, provisioning and
management of secrets such as passwords, encryption keys and X.509 Certificates.
It is aimed at being useful for all environments, including large ephemeral
Clouds.

Sample pillars
==============

Barbican cluster service

.. code-block:: yaml

    barbican:
      server:
        enabled: true
        version: ocata
        host_href: ''
        is_proxied: true
        plugin:
          simple_crypto:
            kek: "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXoxMjM0NTY="
        store:
          software:
            crypto_plugin: simple_crypto
            store_plugin: store_crypto
            global_default: True
        database:
          engine: "mysql+pymysql"
          host: 10.0.106.20
          port: 3306
          name: barbican
          user: barbican
          password: password
        bind:
          address: 10.0.106.20
          port: 9311
          admin_port: 9312
        identity:
          engine: keystone
          host: 10.0.106.20
          port: 35357
          domain: default
          tenant: service
          user: barbican
          password: password
        message_queue:
          engine: rabbitmq
          user: openstack
          password: password
          virtual_host: '/openstack'
          members:
          - host: 10.10.10.10
            port: 5672
          - host: 10.10.10.11
            port: 5672
          - host: 10.10.10.12
            port: 5672
        cache:
          members:
          - host: 10.10.10.10
            port: 11211
          - host: 10.10.10.11
            port: 11211
          - host: 10.10.10.12
            port: 11211

Enhanced logging with logging.conf
----------------------------------

By default logging.conf is disabled.

That is possible to enable per-binary logging.conf with new variables:
  * openstack_log_appender - set it to true to enable log_config_append for all OpenStack services;
  * openstack_fluentd_handler_enabled - set to true to enable FluentHandler for all Openstack services.
  * openstack_ossyslog_handler_enabled - set to true to enable OSSysLogHandler for all Openstack services.

Only WatchedFileHandler, OSSysLogHandler and FluentHandler are available.

Also it is possible to configure this with pillar:

.. code-block:: yaml

  barbican:
    server:
      logging:
        log_appender: true
        log_handlers:
          watchedfile:
            enabled: true
          fluentd:
            enabled: true
          ossyslog:
            enabled: true

Running behind loadbalancer

If you are running behind loadbalancer, set the `host_href` to load balancer's
address. You can set `host_href` empty and the api attempts autodetect correct
address from http requests.

.. code-block:: yaml

    barbican:
      server:
        enabled: true
        version: ocata
        host_href: ''


Running behind proxy

If you are running behind proxy, set the `is_proxied` parameter to `true`. This
will allow `host_href` autodetection with help of proxy headers such as
`X-FORWARDED-FOR` and `X-FORWARDED-PROTO`.

.. code-block:: yaml

    barbican:
      server:
        enabled: true
        version: ocata
        host_href: ''
        is_proxied: true

Queuing asynchronous messaging

By default is `async_queues_enable` set `false` to invoke worker tasks
synchronously (i.e. no-queue standalone mode). To enable queuing asynchronous
messaging you need to set it true.

.. code-block:: yaml

    barbican:
      server:
        enabled: true
        version: ocata
        async_queues_enable: true

Keystone notification listener

To enable keystone notification listener, set the `ks_notification_enable`
to true.

`ks_notifications_allow_requeue` enables requeue feature in case of
notification processing error. Enable this only when underlying transport
supports this feature.

`ks_notifications_topic` (defaults to 'notifications') allows to set
name of the topic to listen for Keystone notifications on. Note that Keystone
must also be configured to send notifications to this topic.
If Barbican version and messaging back end support listener pooling,
it is preferable to leave this value as default and use
`ks_notifications_pool_name` (see below).

`ks_notifications_pool_name` (Since Pike release) allows to use keystone
listener together with other applications listening on the same notifications
topic without interference between services.
Set it to any distinctive value to enable listener pooling.
It is enabled by default with pool name 'barbican'.
Disable it (by setting to empty string) only if underlying messaging transport
does not support this feature or Barbican is the sole service listening for
notifications on `ks_notifications_topic` (default is 'notifications') topic.

.. code-block:: yaml

    barbican:
      server:
        enabled: true
        version: queens
        ks_notifications_enable: true
        ks_notifications_allow_requeue: true
        ks_notifications_pool_name: barbican


MySQL server has gone away

MySQL uses a default `wait_timeout` of 8 hours, after which it will drop
idle connections. This can result in 'MySQL Gone Away' exceptions. If you
notice this, you can lower `sql_idle_timeout` to ensure that SQLAlchemy
reconnects before MySQL can drop the connection. If you run MySQL with HAProxy
you need to consider haproxy client/server timeout parameters.

.. code-block:: yaml

    barbican:
      server:
        enabled: true
        version: ocata
        database:
          engine: "mysql+pymysql"
          host: 10.0.106.20
          port: 3306
          name: barbican
          user: barbican
          password: password
          sql_idle_timeout: 180


Configuring TLS communications
------------------------------

In order to trust remote server's certificate during establishing tls
connection the CA cert must be provided at client side. By default
system wide installed CA certs are used. You can change this behavior
by specifying cacert_file and cacert params (optional).
See examples below:


- **RabbitMQ**

.. code-block:: yaml

 barbican:
   server:
      message_queue:
        port: 5671
        ssl:
          enabled: True
          cacert: cert body if the cacert_file does not exists
          cacert_file: /etc/openstack/rabbitmq-ca.pem


- **MySQL**

.. code-block:: yaml

 barbican:
   server:
      database:
        ssl:
          enabled: True
          cacert: cert body if the cacert_file does not exists
          cacert_file: /etc/openstack/mysql-ca.pem


Configuring plugins
-------------------

Dogtag KRA

.. code block:: yaml

    barbican:
      server:
        plugin:
          dogtag:
            pem_path: '/etc/barbican/kra_admin_cert.pem'
            dogtag_host: localhost
            dogtag_port: 8443
            nss_db_path: '/etc/barbican/alias'
            nss_db_path_ca: '/etc/barbican/alias-ca'
            nss_password: 'password123'
            simple_cmc_profile: 'caOtherCert'
            ca_expiration_time: 1
            plugin_working_dir: '/etc/barbican/dogtag'

There are few sources (engines) to define KRA admin cert:
Engine #1: Define KRA admin cert by pillar.
To define KRA admin cert by pillar need to define the following:
.. code block:: yaml
    barbican:
      server:
        dogtag_admin_cert:
          engine: manual
          key: |
          ... key data ...
Engine #2: Receive DogTag cert from Salt Mine.
DogTag formula sends KRA cert to dogtag_admin_cert mine function.
.. code block:: yaml
    barbican:
      server:
        dogtag_admin_cert:
          engine: mine
          minion: ...name of minion which has installed DogTag..
Engine #3: No operations.
In case of some additional steps to install KRA certificate which
are out of scope for the formula, the formula has 'noop' engine
to perform no operations. If 'noop' engine is defined the formula will
do nothing to install KRA admin cert.
.. code block:: yaml
    barbican:
      server:
        dogtag_admin_cert:
          engine: noop

KMIP HSM

.. code block:: yaml

    barbican:
      server:
        plugin:
          kmip:
            username: 'admin'
            password: 'password'
            host: localhost
            port: 5696
            keyfile: '/path/to/certs/cert.key'
            certfile: '/path/to/certs/cert.crt'
            ca_certs: '/path/to/certs/LocalCA.crt'


PKCS11 HSM

.. code block:: yaml

    barbican:
      server:
        plugin:
          p11_crypto:
            library_path: '/usr/lib/libCryptoki2_64.so'
            login: 'mypassword'
            mkek_label: 'an_mkek'
            mkek_length: 32
            hmac_label: 'my_hmac_label'

VAULT

.. code block:: yaml

    barbican:
      server:
        plugin:
          vault:
            schema: http
            host: localhost
            port: 8200
            root_token_id: s.hpamtsbW5vcHFyc3R1dnd4eXo
            approle_role_id: role_id
            approle_secret_id: secret_id
            kv_mountpoint: secret

Vault supports secure connection. You able to define following fields for use security connection,
also you should place file of certificate or define cert content in cacert field, in the last case
`ssl_ca_crt_file` field required to define.

.. code block:: yaml

    barbican:
      server:
        plugin:
          vault:
            schema: https
            ssl_ca_crt_file: '/etc/barbican/ssl/vault/CA.crt'
            cacert: (certificate content)


Software Only Crypto

`kek` is key encryption key created from 32 bytes encoded as Base64. You should
not use this in production.

.. code block:: yaml

    barbican:
      server:
        plugin:
          simple_crypto:
            kek: 'YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXoxMjM0NTY='


Secret stores
-------------

.. code-block:: yaml

    barbican:
      server:
        plugin:
          simple_crypto:
            kek: "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4eXoxMjM0NTY="
          p11_crypto:
            library_path: '/usr/lib/libCryptoki2_64.so'
            login: 'mypassword'
            mkek_label: 'an_mkek'
            mkek_length: 32
            hmac_label: 'my_hmac_label'
          kmip:
            username: 'admin'
            password: 'password'
            host: localhost
            port: 5696
            keyfile: '/path/to/certs/cert.key'
            certfile: '/path/to/certs/cert.crt'
            ca_certs: '/path/to/certs/LocalCA.crt'
          dogtag:
            pem_path: '/etc/barbican/kra_admin_cert.pem'
            dogtag_host: localhost
            dogtag_port: 8443
            nss_db_path: '/etc/barbican/alias'
            nss_db_path_ca: '/etc/barbican/alias-ca'
            nss_password: 'password123'
            simple_cmc_profile: 'caOtherCert'
            ca_expiration_time: 1
            plugin_working_dir: '/etc/barbican/dogtag'
          vault:
            schema: http
            host: localhost
            port: 8200
            root_token_id: s.hpamtsbW5vcHFyc3R1dnd4eXo
            approle_role_id: role_id
            approle_secret_id: secret_id
            kv_mountpoint: secret
        store:
          software:
            crypto_plugin: simple_crypto
            store_plugin: store_crypto
            global_default: True
          kmip:
            store_plugin: kmip_plugin
          dogtag:
            store_plugin: dogtag_crypto
          pkcs11:
            store_plugin: store_crypto
            crypto_plugin: p11_crypto

Creating resources in barbican
------------------------------

To create a secret with payload from file in barbican, next pillar can be used:

.. code-block:: yaml

  barbican:
    client:
      enabled: True
      resources:
        v1:
          enabled: true
          cloud_name: admin_identity
          secrets:
            TestSecret:
              type: certificate
              algorithm: RSA
              payload_content_type: application/octet-stream
              payload_content_encoding: base64
              payload_path: /tmp/test.crt
              encodeb64_payload: true
          acl:
            TestSecret:
                test_user:
                  enabled: True


Sign image with barbican
------------------------

To sign image with given image name, secrect name and user credentials, can be
used the following pillar:


.. code-block:: yaml

  barbican:
    client:
      enabled: True
      signed_images:
        v1:
          enabled: true
          images:
            TestImage:
              secret_name: 'TestSecret'
              cert_key: /etc/test/certs/image.key
              name: test-image-name
              cloud_name: admin_identity


Enable x509 and ssl communication between Barbican and Galera cluster.
----------------------------------------------------------------------
By default communication between Barbican and Galera is unsecure.

barbican:
  server:
    database:
      x509:
        enabled: True

You able to set custom certificates in pillar:

barbican:
  server:
    database:
      x509:
        cacert: (certificate content)
        cert: (certificate content)
        key: (certificate content)

You can read more about it here:
    https://docs.openstack.org/security-guide/databases/database-access-control.html

Barbican server with memcached caching and security strategy:

.. code-block:: yaml

    barbican:
      server:
        enabled: true
        ...
        cache:
          engine: memcached
          members:
          - host: 127.0.0.1
            port: 11211
          - host: 127.0.0.1
            port: 11211
          security:
            enabled: true
            strategy: ENCRYPT
            secret_key: secret

Change default options using configmap template settings
========================================================

.. code-block:: yaml

  barbican:
    server:
      configmap:
        DEFAULT:
          max_allowed_secret_in_bytes: 10000
          max_allowed_request_size_in_bytes: 1000000
          sql_pool_max_overflow: 10
          default_limit_paging: 10
          max_limit_paging: 100
        quotas:
          quota_secrets: -1
          quota_orders: -1
          quota_containers: -1
          quota_consumers: -1
          quota_cas: -1

Read more
=========

* https://docs.openstack.org/barbican/latest/