diff --git a/manifests/cache.pp b/manifests/cache.pp
index 3d7ae17..3334133 100644
--- a/manifests/cache.pp
+++ b/manifests/cache.pp
@@ -9,99 +9,99 @@
 #   the cache region. This should not need to be changed unless there
 #   is another dogpile.cache region with the same configuration name.
 #   (string value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*expiration_time*]
 #   (Optional) Default TTL, in seconds, for any cached item in the
 #   dogpile.cache region. This applies to any cached method that
 #   doesn't have an explicit cache expiration time defined for it.
 #   (integer value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*backend*]
 #   (Optional) Dogpile.cache backend module. It is recommended that
 #   Memcache with pooling (oslo_cache.memcache_pool) or Redis
 #   (dogpile.cache.redis) be used in production deployments. (string value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*backend_argument*]
 #   (Optional) Arguments supplied to the backend module. Specify this option
 #   once per argument to be passed to the dogpile.cache backend.
 #   Example format: "<argname>:<value>". (list value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*proxies*]
 #   (Optional) Proxy classes to import that will affect the way the
 #   dogpile.cache backend functions. See the dogpile.cache documentation on
 #   changing-backend-behavior. (list value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*enabled*]
 #   (Optional) Global toggle for caching. (boolean value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*debug_cache_backend*]
 #   (Optional) Extra debugging from the cache backend (cache keys,
 #   get/set/delete/etc calls). This is only really useful if you need
 #   to see the specific cache-backend get/set/delete calls with the keys/values.
 #   Typically this should be left set to false. (boolean value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*memcache_servers*]
 #   (Optional) Memcache servers in the format of "host:port".
 #   (dogpile.cache.memcache and oslo_cache.memcache_pool backends only).
 #   (list value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*memcache_dead_retry*]
 #   (Optional) Number of seconds memcached server is considered dead before
 #   it is tried again. (dogpile.cache.memcache and oslo_cache.memcache_pool
 #   backends only). (integer value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*memcache_socket_timeout*]
 #   (Optional) Timeout in seconds for every call to a server.
 #   (dogpile.cache.memcache and oslo_cache.memcache_pool backends only).
 #   (floating point value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*enable_socket_keepalive*]
 #   (Optional) Global toggle for the socket keepalive of dogpile's
 #   pymemcache backend
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*socket_keepalive_idle*]
 #   (Optional) The time (in seconds) the connection needs to remain idle
 #   before TCP starts sending keepalive probes. Should be a positive integer
 #   most greater than zero.
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*socket_keepalive_interval*]
 #   (Optional) The time (in seconds) between individual keepalive probes.
 #   Should be a positive integer most greater than zero.
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*socket_keepalive_count*]
 #   (Optional) The maximum number of keepalive probes TCP should send before
 #   dropping the connection. Should be a positive integer most greater than
 #   zero.
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*memcache_pool_maxsize*]
 #   (Optional) Max total number of open connections to every memcached server.
 #   (oslo_cache.memcache_pool backend only). (integer value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*memcache_pool_unused_timeout*]
 #   (Optional) Number of seconds a connection to memcached is held unused
 #   in the pool before it is closed. (oslo_cache.memcache_pool backend only)
 #   (integer value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*memcache_pool_connection_get_timeout*]
 #   (Optional) Number of seconds that an operation will wait to get a memcache
 #   client connection. (integer value)
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*manage_backend_package*]
 #   (Optional) Whether to install the backend package for the cache.
@@ -110,13 +110,13 @@
 # [*tls_enabled*]
 #   (Optional) Global toggle for TLS usage when comunicating with
 #   the caching servers.
-#   Default to $::os_service_default
+#   Default to $facts['os_service_default']
 #
 # [*tls_cafile*]
 #   (Optional) Path to a file of concatenated CA certificates in PEM
 #   format necessary to establish the caching server's authenticity.
 #   If tls_enabled is False, this option is ignored.
-#   Default to $::os_service_default
+#   Default to $facts['os_service_default']
 #
 # [*tls_certfile*]
 #   (Optional) Path to a single file in PEM format containing the
@@ -124,46 +124,46 @@
 #   needed to establish the certificate's authenticity. This file
 #   is only required when client side authentication is necessary.
 #   If tls_enabled is False, this option is ignored.
-#   Default to $::os_service_default
+#   Default to $facts['os_service_default']
 #
 # [*tls_keyfile*]
 #   (Optional) Path to a single file containing the client's private
 #   key in. Otherwhise the private key will be taken from the file
 #   specified in tls_certfile. If tls_enabled is False, this option
 #   is ignored.
-#   Default to $::os_service_default
+#   Default to $facts['os_service_default']
 #
 # [*tls_allowed_ciphers*]
 #   (Optional) Set the available ciphers for sockets created with
 #   the TLS context. It should be a string in the OpenSSL cipher
 #   list format. If not specified, all OpenSSL enabled ciphers will
 #   be available.
-#   Default to $::os_service_default
+#   Default to $facts['os_service_default']
 #
 class zaqar::cache (
-  $config_prefix                        = $::os_service_default,
-  $expiration_time                      = $::os_service_default,
-  $backend                              = $::os_service_default,
-  $backend_argument                     = $::os_service_default,
-  $proxies                              = $::os_service_default,
-  $enabled                              = $::os_service_default,
-  $debug_cache_backend                  = $::os_service_default,
-  $memcache_servers                     = $::os_service_default,
-  $memcache_dead_retry                  = $::os_service_default,
-  $memcache_socket_timeout              = $::os_service_default,
-  $enable_socket_keepalive              = $::os_service_default,
-  $socket_keepalive_idle                = $::os_service_default,
-  $socket_keepalive_interval            = $::os_service_default,
-  $socket_keepalive_count               = $::os_service_default,
-  $memcache_pool_maxsize                = $::os_service_default,
-  $memcache_pool_unused_timeout         = $::os_service_default,
-  $memcache_pool_connection_get_timeout = $::os_service_default,
+  $config_prefix                        = $facts['os_service_default'],
+  $expiration_time                      = $facts['os_service_default'],
+  $backend                              = $facts['os_service_default'],
+  $backend_argument                     = $facts['os_service_default'],
+  $proxies                              = $facts['os_service_default'],
+  $enabled                              = $facts['os_service_default'],
+  $debug_cache_backend                  = $facts['os_service_default'],
+  $memcache_servers                     = $facts['os_service_default'],
+  $memcache_dead_retry                  = $facts['os_service_default'],
+  $memcache_socket_timeout              = $facts['os_service_default'],
+  $enable_socket_keepalive              = $facts['os_service_default'],
+  $socket_keepalive_idle                = $facts['os_service_default'],
+  $socket_keepalive_interval            = $facts['os_service_default'],
+  $socket_keepalive_count               = $facts['os_service_default'],
+  $memcache_pool_maxsize                = $facts['os_service_default'],
+  $memcache_pool_unused_timeout         = $facts['os_service_default'],
+  $memcache_pool_connection_get_timeout = $facts['os_service_default'],
   $manage_backend_package               = true,
-  $tls_enabled                          = $::os_service_default,
-  $tls_cafile                           = $::os_service_default,
-  $tls_certfile                         = $::os_service_default,
-  $tls_keyfile                          = $::os_service_default,
-  $tls_allowed_ciphers                  = $::os_service_default,
+  $tls_enabled                          = $facts['os_service_default'],
+  $tls_cafile                           = $facts['os_service_default'],
+  $tls_certfile                         = $facts['os_service_default'],
+  $tls_keyfile                          = $facts['os_service_default'],
+  $tls_allowed_ciphers                  = $facts['os_service_default'],
 ) {
 
   include zaqar::deps
diff --git a/manifests/cors.pp b/manifests/cors.pp
index a9bbf2a..90db94d 100644
--- a/manifests/cors.pp
+++ b/manifests/cors.pp
@@ -8,41 +8,41 @@
 #   (Optional) Indicate whether this resource may be shared with the domain
 #   received in the requests "origin" header.
 #   (string value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*allow_credentials*]
 #   (Optional) Indicate that the actual request can include user credentials.
 #   (boolean value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*expose_headers*]
 #   (Optional) Indicate which headers are safe to expose to the API.
 #   (list value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_age*]
 #   (Optional) Maximum cache age of CORS preflight requests.
 #   (integer value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*allow_methods*]
 #   (Optional) Indicate which methods can be used during the actual request.
 #   (list value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*allow_headers*]
 #   (Optional) Indicate which header field names may be used during the actual
 #   request.
 #   (list value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 class zaqar::cors (
-  $allowed_origin    = $::os_service_default,
-  $allow_credentials = $::os_service_default,
-  $expose_headers    = $::os_service_default,
-  $max_age           = $::os_service_default,
-  $allow_methods     = $::os_service_default,
-  $allow_headers     = $::os_service_default,
+  $allowed_origin    = $facts['os_service_default'],
+  $allow_credentials = $facts['os_service_default'],
+  $expose_headers    = $facts['os_service_default'],
+  $max_age           = $facts['os_service_default'],
+  $allow_methods     = $facts['os_service_default'],
+  $allow_headers     = $facts['os_service_default'],
 ) {
 
   include zaqar::deps
diff --git a/manifests/init.pp b/manifests/init.pp
index cfeb3f3..f0e2a44 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -22,42 +22,42 @@
 #   Pipeline to use for processing queue operations.
 #   This pipeline will be consumed before calling the storage driver's
 #   controller methods.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*message_pipeline*]
 #   Pipeline to use for processing message operations.
 #   This pipeline will be consumed before calling the storage driver's
 #   controller methods.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*claim_pipeline*]
 #   Pipeline to use for processing claim operations. This
 #   pipeline will be consumed before calling the storage driver's controller
 #   methods.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*subscription_pipeline*]
 #   Pipeline to use for processing subscription
 #   operations. This pipeline will be consumed before calling the storage
 #   driver's controller methods.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*topic_pipeline*]
 #   Pipeline to use for processing topic operations. This pipeline will be
 #   consumed before calling the strage driver's controller methods.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_messages_post_size*]
 #   Defines the maximum size of message posts. (integer value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*message_store*]
 #   Backend driver for message storage.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*management_store*]
 #   Backend driver for management storage.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*unreliable*]
 #   Disable all reliability constraints. (boolean value)
@@ -78,15 +78,15 @@
 #
 class zaqar(
   $auth_strategy          = 'keystone',
-  $admin_mode             = $::os_service_default,
-  $unreliable             = $::os_service_default,
-  $pooling                = $::os_service_default,
-  $queue_pipeline         = $::os_service_default,
-  $message_pipeline       = $::os_service_default,
-  $claim_pipeline         = $::os_service_default,
-  $subscription_pipeline  = $::os_service_default,
-  $topic_pipeline         = $::os_service_default,
-  $max_messages_post_size = $::os_service_default,
+  $admin_mode             = $facts['os_service_default'],
+  $unreliable             = $facts['os_service_default'],
+  $pooling                = $facts['os_service_default'],
+  $queue_pipeline         = $facts['os_service_default'],
+  $message_pipeline       = $facts['os_service_default'],
+  $claim_pipeline         = $facts['os_service_default'],
+  $subscription_pipeline  = $facts['os_service_default'],
+  $topic_pipeline         = $facts['os_service_default'],
+  $max_messages_post_size = $facts['os_service_default'],
   $message_store          = 'mongodb',
   $management_store       = 'mongodb',
   $package_name           = $::zaqar::params::package_name,
diff --git a/manifests/keystone/authtoken.pp b/manifests/keystone/authtoken.pp
index 467658d..918abc7 100644
--- a/manifests/keystone/authtoken.pp
+++ b/manifests/keystone/authtoken.pp
@@ -10,7 +10,7 @@
 #
 # [*password*]
 #   (Optional) Password to create for the service user
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*auth_url*]
 #   (Optional) The URL to use for authentication.
@@ -30,17 +30,17 @@
 #
 # [*system_scope*]
 #   (Optional) Scope for system operations.
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*insecure*]
 #   (Optional) If true, explicitly allow TLS without checking server cert
 #   against any certificate authorities.  WARNING: not recommended.  Use with
 #   caution.
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*auth_section*]
 #   (Optional) Config Section from which to load plugin specific options
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*auth_type*]
 #   (Optional) Authentication type to load
@@ -52,26 +52,26 @@
 #
 # [*auth_version*]
 #   (Optional) API version of the admin Identity API endpoint.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*cache*]
 #   (Optional) Env key for the swift cache.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*cafile*]
 #   (Optional) A PEM encoded Certificate Authority to use when verifying HTTPs
 #   connections.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*certfile*]
 #   (Optional) Required if identity server requires client certificate
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*delay_auth_decision*]
 #   (Optional) Do not handle authorization requests within the middleware, but
 #   delegate the authorization decision to downstream WSGI components. Boolean
 #   value
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*enforce_token_bind*]
 #   (Optional) Used to control the use and type of token binding. Can be set
@@ -81,57 +81,57 @@
 #   type is unknown the token will be rejected. "required" any form of token
 #   binding is needed to be allowed. Finally the name of a binding method that
 #   must be present in tokens. String value.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*http_connect_timeout*]
 #   (Optional) Request timeout value for communicating with Identity API
 #   server.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*http_request_max_retries*]
 #   (Optional) How many times are we trying to reconnect when communicating
 #   with Identity API Server. Integer value
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*include_service_catalog*]
 #   (Optional) Indicate whether to set the X-Service-Catalog header. If False,
 #   middleware will not ask for service catalog on token validation and will
 #   not set the X-Service-Catalog header. Boolean value.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*keyfile*]
 #   (Optional) Required if identity server requires client certificate
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*memcache_pool_conn_get_timeout*]
 #   (Optional) Number of seconds that an operation will wait to get a memcached
 #   client connection from the pool. Integer value
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*memcache_pool_dead_retry*]
 #   (Optional) Number of seconds memcached server is considered dead before it
 #   is tried again. Integer value
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*memcache_pool_maxsize*]
 #   (Optional) Maximum total number of open connections to every memcached
 #   server. Integer value
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*memcache_pool_socket_timeout*]
 #   (Optional) Number of seconds a connection to memcached is held unused in
 #   the pool before it is closed. Integer value
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*memcache_pool_unused_timeout*]
 #   (Optional) Number of seconds a connection to memcached is held unused in
 #   the pool before it is closed. Integer value
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*memcache_secret_key*]
 #   (Optional, mandatory if memcache_security_strategy is defined) This string
 #   is used for key derivation.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*memcache_security_strategy*]
 #   (Optional) If defined, indicate whether token data should be authenticated
@@ -139,17 +139,17 @@
 #   HMAC) in the cache. If ENCRYPT, token data is encrypted and authenticated in the
 #   cache. If the value is not one of these options or empty, auth_token will
 #   raise an exception on initialization.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*memcache_use_advanced_pool*]
 #   (Optional)  Use the advanced (eventlet safe) memcached client pool. The
 #   advanced pool will only work under python 2.x Boolean value
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*memcached_servers*]
 #   (Optional) Optionally specify a list of memcached server(s) to use for
 #   caching. If left undefined, tokens will instead be cached in-process.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*manage_memcache_package*]
 #  (Optional) Whether to install the python-memcache package.
@@ -157,13 +157,13 @@
 #
 # [*region_name*]
 #   (Optional) The region in which the identity server can be found.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*token_cache_time*]
 #   (Optional) In order to prevent excessive effort spent validating tokens,
 #   the middleware caches previously-seen tokens for a configurable duration
 #   (in seconds). Set to -1 to disable caching completely. Integer value
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*service_token_roles*]
 #   (Optional) A choice of roles that must be present in a service token.
@@ -173,23 +173,23 @@
 #   here are applied as an ANY check so any role in this list
 #   must be present. For backwards compatibility reasons this
 #   currently only affects the allow_expired check. (list value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*service_token_roles_required*]
 #   (optional) backwards compatibility to ensure that the service tokens are
 #   compared against a list of possible roles for validity
 #   true/false
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*service_type*]
 #  (Optional) The name or type of the service as it appears in the service
 #  catalog. This is used to validate tokens that have restricted access rules.
-#  Defaults to $::os_service_default.
+#  Defaults to $facts['os_service_default'].
 #
 # [*interface*]
 #  (Optional) Interface to use for the Identity API endpoint. Valid values are
 #  "public", "internal" or "admin".
-#  Defaults to $::os_service_default.
+#  Defaults to $facts['os_service_default'].
 #
 # [*params*]
 #  (Optional) Hash of additional parameters to pass through to the keystone
@@ -197,42 +197,42 @@
 #
 class zaqar::keystone::authtoken(
   $username                       = 'zaqar',
-  $password                       = $::os_service_default,
+  $password                       = $facts['os_service_default'],
   $auth_url                       = 'http://localhost:5000',
   $project_name                   = 'services',
   $user_domain_name               = 'Default',
   $project_domain_name            = 'Default',
-  $system_scope                   = $::os_service_default,
-  $insecure                       = $::os_service_default,
-  $auth_section                   = $::os_service_default,
+  $system_scope                   = $facts['os_service_default'],
+  $insecure                       = $facts['os_service_default'],
+  $auth_section                   = $facts['os_service_default'],
   $auth_type                      = 'password',
   $www_authenticate_uri           = 'http://localhost:5000',
-  $auth_version                   = $::os_service_default,
-  $cache                          = $::os_service_default,
-  $cafile                         = $::os_service_default,
-  $certfile                       = $::os_service_default,
-  $delay_auth_decision            = $::os_service_default,
-  $enforce_token_bind             = $::os_service_default,
-  $http_connect_timeout           = $::os_service_default,
-  $http_request_max_retries       = $::os_service_default,
-  $include_service_catalog        = $::os_service_default,
-  $keyfile                        = $::os_service_default,
-  $memcache_pool_conn_get_timeout = $::os_service_default,
-  $memcache_pool_dead_retry       = $::os_service_default,
-  $memcache_pool_maxsize          = $::os_service_default,
-  $memcache_pool_socket_timeout   = $::os_service_default,
-  $memcache_pool_unused_timeout   = $::os_service_default,
-  $memcache_secret_key            = $::os_service_default,
-  $memcache_security_strategy     = $::os_service_default,
-  $memcache_use_advanced_pool     = $::os_service_default,
-  $memcached_servers              = $::os_service_default,
+  $auth_version                   = $facts['os_service_default'],
+  $cache                          = $facts['os_service_default'],
+  $cafile                         = $facts['os_service_default'],
+  $certfile                       = $facts['os_service_default'],
+  $delay_auth_decision            = $facts['os_service_default'],
+  $enforce_token_bind             = $facts['os_service_default'],
+  $http_connect_timeout           = $facts['os_service_default'],
+  $http_request_max_retries       = $facts['os_service_default'],
+  $include_service_catalog        = $facts['os_service_default'],
+  $keyfile                        = $facts['os_service_default'],
+  $memcache_pool_conn_get_timeout = $facts['os_service_default'],
+  $memcache_pool_dead_retry       = $facts['os_service_default'],
+  $memcache_pool_maxsize          = $facts['os_service_default'],
+  $memcache_pool_socket_timeout   = $facts['os_service_default'],
+  $memcache_pool_unused_timeout   = $facts['os_service_default'],
+  $memcache_secret_key            = $facts['os_service_default'],
+  $memcache_security_strategy     = $facts['os_service_default'],
+  $memcache_use_advanced_pool     = $facts['os_service_default'],
+  $memcached_servers              = $facts['os_service_default'],
   $manage_memcache_package        = false,
-  $region_name                    = $::os_service_default,
-  $token_cache_time               = $::os_service_default,
-  $service_token_roles            = $::os_service_default,
-  $service_token_roles_required   = $::os_service_default,
-  $service_type                   = $::os_service_default,
-  $interface                      = $::os_service_default,
+  $region_name                    = $facts['os_service_default'],
+  $token_cache_time               = $facts['os_service_default'],
+  $service_token_roles            = $facts['os_service_default'],
+  $service_token_roles_required   = $facts['os_service_default'],
+  $service_type                   = $facts['os_service_default'],
+  $interface                      = $facts['os_service_default'],
   $params                         = {}
 ) {
 
diff --git a/manifests/keystone/trust.pp b/manifests/keystone/trust.pp
index aee18b5..ebed742 100644
--- a/manifests/keystone/trust.pp
+++ b/manifests/keystone/trust.pp
@@ -10,7 +10,7 @@
 #
 # [*password*]
 #   (Optional) Password to create for the trust user
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*auth_url*]
 #   (Optional) The URL to use for authentication.
@@ -22,7 +22,7 @@
 #
 # [*auth_section*]
 #   (Optional) Config Section from which to load plugin specific options
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*auth_type*]
 #   (Optional) Authentication type to load
@@ -30,10 +30,10 @@
 #
 class zaqar::keystone::trust(
   $username                       = 'zaqar',
-  $password                       = $::os_service_default,
+  $password                       = $facts['os_service_default'],
   $auth_url                       = 'http://localhost:5000',
   $user_domain_name               = 'Default',
-  $auth_section                   = $::os_service_default,
+  $auth_section                   = $facts['os_service_default'],
   $auth_type                      = 'password',
 ) {
 
diff --git a/manifests/logging.pp b/manifests/logging.pp
index f57a750..06699fe 100644
--- a/manifests/logging.pp
+++ b/manifests/logging.pp
@@ -6,71 +6,71 @@
 #
 # [*debug*]
 #   (Optional) Should the daemons log debug messages.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*use_syslog*]
 #   (Optional) Use syslog for logging.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*use_json*]
 #   (Optional) Use json for logging.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*use_journal*]
 #   (Optional) Use journal for logging.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*use_stderr*]
 #   (Optional) Use stderr for logging.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*log_facility*]
 #   (Optional) Syslog facility to receive log lines.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*log_dir*]
 #   (Optional) Directory where logs should be stored.
-#   If set to $::os_service_default, it will not log to any directory.
+#   If set to $facts['os_service_default'], it will not log to any directory.
 #   Defaults to '/var/log/zaqar'
 #
 # [*log_file*]
 #   (Optional) File where logs should be stored.
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*watch_log_file*]
 #   (Optional) Uses logging handler designed to watch file system (boolean value).
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*logging_context_format_string*]
 #   (Optional) Format string to use for log messages with context.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #   Example: '%(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s\
 #             [%(request_id)s %(user_identity)s] %(instance)s%(message)s'
 #
 # [*logging_default_format_string*]
 #   (Optional) Format string to use for log messages without context.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #   Example: '%(asctime)s.%(msecs)03d %(process)d %(levelname)s %(name)s\
 #             [-] %(instance)s%(message)s'
 #
 # [*logging_debug_format_suffix*]
 #   (Optional) Formatted data to append to log format when level is DEBUG.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #   Example: '%(funcName)s %(pathname)s:%(lineno)d'
 #
 # [*logging_exception_prefix*]
 #   (Optional) Prefix each line of exception output with this format.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #   Example: '%(asctime)s.%(msecs)03d %(process)d TRACE %(name)s %(instance)s'
 #
 # [*log_config_append*]
 #   (Optional) The name of an additional logging configuration file.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #   See https://docs.python.org/2/howto/logging.html
 #
 # [*default_log_levels*]
 #   (Optional) Hash of logger (keys) and level (values) pairs.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #   Example:
 #     { 'amqp'  => 'WARN', 'amqplib' => 'WARN', 'boto' => 'WARN',
 #          'sqlalchemy' => 'WARN', 'suds' => 'INFO',
@@ -82,50 +82,50 @@
 #
 # [*publish_errors*]
 #   (Optional) Publish error events (boolean value).
-#   Defaults to $::os_service_default (false if unconfigured).
+#   Defaults to $facts['os_service_default'] (false if unconfigured).
 #
 # [*fatal_deprecations*]
 #   (Optional) Make deprecations fatal (boolean value)
-#   Defaults to $::os_service_default (false if unconfigured).
+#   Defaults to $facts['os_service_default'] (false if unconfigured).
 #
 # [*instance_format*]
 #   (Optional) If an instance is passed with the log message, format it
 #              like this (string value).
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #   Example: '[instance: %(uuid)s] '
 #
 # [*instance_uuid_format*]
 #   (Optional) If an instance UUID is passed with the log message, format
 #              it like this (string value).
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #   Example: instance_uuid_format='[instance: %(uuid)s] '
 
 # [*log_date_format*]
 #   (Optional) Format string for %%(asctime)s in log records.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #   Example: 'Y-%m-%d %H:%M:%S'
 #
 class zaqar::logging(
-  $use_syslog                    = $::os_service_default,
-  $use_json                      = $::os_service_default,
-  $use_journal                   = $::os_service_default,
-  $use_stderr                    = $::os_service_default,
-  $log_facility                  = $::os_service_default,
+  $use_syslog                    = $facts['os_service_default'],
+  $use_json                      = $facts['os_service_default'],
+  $use_journal                   = $facts['os_service_default'],
+  $use_stderr                    = $facts['os_service_default'],
+  $log_facility                  = $facts['os_service_default'],
   $log_dir                       = '/var/log/zaqar',
-  $log_file                      = $::os_service_default,
-  $watch_log_file                = $::os_service_default,
-  $debug                         = $::os_service_default,
-  $logging_context_format_string = $::os_service_default,
-  $logging_default_format_string = $::os_service_default,
-  $logging_debug_format_suffix   = $::os_service_default,
-  $logging_exception_prefix      = $::os_service_default,
-  $log_config_append             = $::os_service_default,
-  $default_log_levels            = $::os_service_default,
-  $publish_errors                = $::os_service_default,
-  $fatal_deprecations            = $::os_service_default,
-  $instance_format               = $::os_service_default,
-  $instance_uuid_format          = $::os_service_default,
-  $log_date_format               = $::os_service_default,
+  $log_file                      = $facts['os_service_default'],
+  $watch_log_file                = $facts['os_service_default'],
+  $debug                         = $facts['os_service_default'],
+  $logging_context_format_string = $facts['os_service_default'],
+  $logging_default_format_string = $facts['os_service_default'],
+  $logging_debug_format_suffix   = $facts['os_service_default'],
+  $logging_exception_prefix      = $facts['os_service_default'],
+  $log_config_append             = $facts['os_service_default'],
+  $default_log_levels            = $facts['os_service_default'],
+  $publish_errors                = $facts['os_service_default'],
+  $fatal_deprecations            = $facts['os_service_default'],
+  $instance_format               = $facts['os_service_default'],
+  $instance_uuid_format          = $facts['os_service_default'],
+  $log_date_format               = $facts['os_service_default'],
 ) {
 
   include zaqar::deps
diff --git a/manifests/management/mongodb.pp b/manifests/management/mongodb.pp
index 062abde..0687fc7 100644
--- a/manifests/management/mongodb.pp
+++ b/manifests/management/mongodb.pp
@@ -5,13 +5,13 @@
 #
 # [*ssl_keyfile*]
 #   The private keyfile used to identify the local connection against
-#   mongod. Default $::os_service_default
-#   Defaults to $::os_service_default.
+#   mongod. Default $facts['os_service_default']
+#   Defaults to $facts['os_service_default'].
 #
 # [*ssl_certfile*]
 #   The certificate file used to identify the local connection against
 #   mongod. (string value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*ssl_cert_reqs*]
 #   Specifies whether a certificate is required from the other side of
@@ -19,56 +19,56 @@
 #   must be one of the three values ``CERT_NONE``(certificates ignored),
 #   ``CERT_OPTIONAL``(not required, but validated if provided), or
 #   ``CERT_REQUIRED``(required and validated).
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*ssl_ca_certs*]
 #   The ca_certs file contains a set of concatenated "certification
 #   authority" certificates, which are used to validate certificates
 #   passed from the other end of the connection.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*database*]
-#   Database name. (string value). Defaults to $::os_service_default.
+#   Database name. (string value). Defaults to $facts['os_service_default'].
 #
 # [*max_attempts*]
 #   Maximum number of times to retry a failed operation. Currently only
 #   used for retrying a message post.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_retry_sleep*]
 #   Maximum sleep interval between retries (actual sleep time increases
 #   linearly according to number of attempts performed).
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_retry_jitter*]
 #   Maximum jitter interval, to be added to the sleep interval, in order
 #   to decrease probability that parallel requests will retry at the
 #   same instant. (floating point value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_reconnect_attempts*]
 #   Maximum number of times to retry an operation that failed due to a
 #   primary node failover. (integer value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*reconnect_sleep*]
 #   Base sleep interval between attempts to reconnect after a primary
 #   node failover. The actual sleep time increases exponentially (power
 #   of 2) each time the operation is retried. (floating point value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 class zaqar::management::mongodb(
   $uri,
-  $ssl_keyfile            = $::os_service_default,
-  $ssl_certfile           = $::os_service_default,
-  $ssl_cert_reqs          = $::os_service_default,
-  $ssl_ca_certs           = $::os_service_default,
-  $database               = $::os_service_default,
-  $max_attempts           = $::os_service_default,
-  $max_retry_sleep        = $::os_service_default,
-  $max_retry_jitter       = $::os_service_default,
-  $max_reconnect_attempts = $::os_service_default,
-  $reconnect_sleep        = $::os_service_default,
+  $ssl_keyfile            = $facts['os_service_default'],
+  $ssl_certfile           = $facts['os_service_default'],
+  $ssl_cert_reqs          = $facts['os_service_default'],
+  $ssl_ca_certs           = $facts['os_service_default'],
+  $database               = $facts['os_service_default'],
+  $max_attempts           = $facts['os_service_default'],
+  $max_retry_sleep        = $facts['os_service_default'],
+  $max_retry_jitter       = $facts['os_service_default'],
+  $max_reconnect_attempts = $facts['os_service_default'],
+  $reconnect_sleep        = $facts['os_service_default'],
 ) {
 
   include zaqar::deps
diff --git a/manifests/management/redis.pp b/manifests/management/redis.pp
index 5fcb994..99562e1 100644
--- a/manifests/management/redis.pp
+++ b/manifests/management/redis.pp
@@ -6,17 +6,17 @@
 # [*max_reconnect_attempts*]
 #   Maximum number of times to retry an operation that failed due to a redis
 #   node failover.
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*reconnect_sleep*]
 #   Base sleep interval between attempts to reconnect after a redis node
 #   failover.
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 class zaqar::management::redis(
   $uri,
-  $max_reconnect_attempts = $::os_service_default,
-  $reconnect_sleep        = $::os_service_default,
+  $max_reconnect_attempts = $facts['os_service_default'],
+  $reconnect_sleep        = $facts['os_service_default'],
 ) {
 
   include zaqar::deps
diff --git a/manifests/messaging/mongodb.pp b/manifests/messaging/mongodb.pp
index d268f18..761f4ef 100644
--- a/manifests/messaging/mongodb.pp
+++ b/manifests/messaging/mongodb.pp
@@ -5,13 +5,13 @@
 #
 # [*ssl_keyfile*]
 #   The private keyfile used to identify the local connection against
-#   mongod. Default $::os_service_default
-#   Defaults to $::os_service_default.
+#   mongod. Default $facts['os_service_default']
+#   Defaults to $facts['os_service_default'].
 #
 # [*ssl_certfile*]
 #   The certificate file used to identify the local connection against
 #   mongod. (string value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*ssl_cert_reqs*]
 #   Specifies whether a certificate is required from the other side of
@@ -19,63 +19,63 @@
 #   must be one of the three values ``CERT_NONE``(certificates ignored),
 #   ``CERT_OPTIONAL``(not required, but validated if provided), or
 #   ``CERT_REQUIRED``(required and validated).
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*ssl_ca_certs*]
 #   The ca_certs file contains a set of concatenated "certification
 #   authority" certificates, which are used to validate certificates
 #   passed from the other end of the connection.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*database*]
-#   Database name. (string value). Defaults to $::os_service_default.
+#   Database name. (string value). Defaults to $facts['os_service_default'].
 #
 # [*max_attempts*]
 #   Maximum number of times to retry a failed operation. Currently only
 #   used for retrying a message post.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_retry_sleep*]
 #   Maximum sleep interval between retries (actual sleep time increases
 #   linearly according to number of attempts performed).
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_retry_jitter*]
 #   Maximum jitter interval, to be added to the sleep interval, in order
 #   to decrease probability that parallel requests will retry at the
 #   same instant. (floating point value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*max_reconnect_attempts*]
 #   Maximum number of times to retry an operation that failed due to a
 #   primary node failover. (integer value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*reconnect_sleep*]
 #   Base sleep interval between attempts to reconnect after a primary
 #   node failover. The actual sleep time increases exponentially (power
 #   of 2) each time the operation is retried. (floating point value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*partitions*]
 #   Number of databases across which to partition message data, in order
 #   to reduce writer lock %. DO NOT change this setting after initial
 #   deployment. It MUST remain static.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 class zaqar::messaging::mongodb(
   $uri,
-  $ssl_keyfile            = $::os_service_default,
-  $ssl_certfile           = $::os_service_default,
-  $ssl_cert_reqs          = $::os_service_default,
-  $ssl_ca_certs           = $::os_service_default,
-  $database               = $::os_service_default,
-  $max_attempts           = $::os_service_default,
-  $max_retry_sleep        = $::os_service_default,
-  $max_retry_jitter       = $::os_service_default,
-  $max_reconnect_attempts = $::os_service_default,
-  $reconnect_sleep        = $::os_service_default,
-  $partitions             = $::os_service_default,
+  $ssl_keyfile            = $facts['os_service_default'],
+  $ssl_certfile           = $facts['os_service_default'],
+  $ssl_cert_reqs          = $facts['os_service_default'],
+  $ssl_ca_certs           = $facts['os_service_default'],
+  $database               = $facts['os_service_default'],
+  $max_attempts           = $facts['os_service_default'],
+  $max_retry_sleep        = $facts['os_service_default'],
+  $max_retry_jitter       = $facts['os_service_default'],
+  $max_reconnect_attempts = $facts['os_service_default'],
+  $reconnect_sleep        = $facts['os_service_default'],
+  $partitions             = $facts['os_service_default'],
 ) {
 
   include zaqar::deps
diff --git a/manifests/messaging/redis.pp b/manifests/messaging/redis.pp
index 3456a49..1bd1f61 100644
--- a/manifests/messaging/redis.pp
+++ b/manifests/messaging/redis.pp
@@ -6,18 +6,18 @@
 # [*max_reconnect_attempts*]
 #   Maximum number of times to retry an operation that failed due to a
 #   primary node failover. (integer value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*reconnect_sleep*]
 #   Base sleep interval between attempts to reconnect after a primary
 #   node failover. The actual sleep time increases exponentially (power
 #   of 2) each time the operation is retried. (floating point value)
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 class zaqar::messaging::redis(
   $uri,
-  $max_reconnect_attempts = $::os_service_default,
-  $reconnect_sleep        = $::os_service_default,
+  $max_reconnect_attempts = $facts['os_service_default'],
+  $reconnect_sleep        = $facts['os_service_default'],
 ) {
 
   include zaqar::deps
diff --git a/manifests/messaging/swift.pp b/manifests/messaging/swift.pp
index f474e95..2c3b6f0 100644
--- a/manifests/messaging/swift.pp
+++ b/manifests/messaging/swift.pp
@@ -4,11 +4,11 @@
 #   Swift Connection URI. Required.
 #
 # [*auth_url*]
-#   URL to the KeyStone service. Default $::os_service_default
+#   URL to the KeyStone service. Default $facts['os_service_default']
 #
 class zaqar::messaging::swift(
   $uri,
-  $auth_url = $::os_service_default,
+  $auth_url = $facts['os_service_default'],
 ) {
 
   include zaqar::deps
diff --git a/manifests/params.pp b/manifests/params.pp
index 4a22901..492d029 100644
--- a/manifests/params.pp
+++ b/manifests/params.pp
@@ -11,7 +11,7 @@ class zaqar::params {
   $user                = 'zaqar'
   $group               = 'zaqar'
 
-  case $::osfamily {
+  case $facts['os']['family'] {
     'RedHat': {
       $package_name             = 'openstack-zaqar'
       $service_name             = 'openstack-zaqar'
@@ -25,9 +25,7 @@ class zaqar::params {
       $zaqar_wsgi_script_path   = '/usr/lib/cgi-bin/zaqar'
     }
     default: {
-      fail("Unsupported osfamily: ${::osfamily} operatingsystem: \
-      ${::operatingsystem}, module ${module_name} only support osfamily \
-      RedHat and Debian")
+      fail("Unsupported osfamily: ${facts['os']['family']}")
     }
   }
 }
diff --git a/manifests/policy.pp b/manifests/policy.pp
index ba55591..9c8b035 100644
--- a/manifests/policy.pp
+++ b/manifests/policy.pp
@@ -6,12 +6,12 @@
 #
 # [*enforce_scope*]
 #  (Optional) Whether or not to enforce scope when evaluating policies.
-#  Defaults to $::os_service_default.
+#  Defaults to $facts['os_service_default'].
 #
 # [*enforce_new_defaults*]
 #  (Optional) Whether or not to use old deprecated defaults when evaluating
 #  policies.
-#  Defaults to $::os_service_default.
+#  Defaults to $facts['os_service_default'].
 #
 # [*policies*]
 #   (Optional) Set of policies to configure for zaqar
@@ -34,11 +34,11 @@
 #
 # [*policy_default_rule*]
 #   (Optional) Default rule. Enforced when a requested rule is not found.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*policy_dirs*]
 #   (Optional) Path to the zaqar policy folder
-#   Defaults to $::os_service_default
+#   Defaults to $facts['os_service_default']
 #
 # [*purge_config*]
 #   (optional) Whether to set only the specified policy rules in the policy
@@ -46,12 +46,12 @@
 #    Defaults to false.
 #
 class zaqar::policy (
-  $enforce_scope        = $::os_service_default,
-  $enforce_new_defaults = $::os_service_default,
+  $enforce_scope        = $facts['os_service_default'],
+  $enforce_new_defaults = $facts['os_service_default'],
   $policies             = {},
   $policy_path          = '/etc/zaqar/policy.yaml',
-  $policy_default_rule  = $::os_service_default,
-  $policy_dirs          = $::os_service_default,
+  $policy_default_rule  = $facts['os_service_default'],
+  $policy_dirs          = $facts['os_service_default'],
   $purge_config         = false,
 ) {
 
diff --git a/manifests/transport/websocket.pp b/manifests/transport/websocket.pp
index 5fa3b61..f24a216 100644
--- a/manifests/transport/websocket.pp
+++ b/manifests/transport/websocket.pp
@@ -2,30 +2,30 @@
 #
 # [*bind*]
 #   Address on which the self-hosting server will listen.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*port*]
 #   Port on which the self-hosting server will listen.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*external_port*]
 #   Port on which the service is provided to the user.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*notification_bind*]
 #   Address on which the notification server will listen.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*notification_port*]
 #   Port on which the notification server will listen.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 class zaqar::transport::websocket(
-  $bind               = $::os_service_default,
-  $port               = $::os_service_default,
-  $external_port      = $::os_service_default,
-  $notification_bind  = $::os_service_default,
-  $notification_port  = $::os_service_default,
+  $bind               = $facts['os_service_default'],
+  $port               = $facts['os_service_default'],
+  $external_port      = $facts['os_service_default'],
+  $notification_bind  = $facts['os_service_default'],
+  $notification_port  = $facts['os_service_default'],
 ) {
 
   include zaqar::deps
diff --git a/manifests/transport/wsgi.pp b/manifests/transport/wsgi.pp
index edf5ed7..eb74106 100644
--- a/manifests/transport/wsgi.pp
+++ b/manifests/transport/wsgi.pp
@@ -2,15 +2,15 @@
 #
 # [*bind*]
 #   Address on which the self-hosting server will listen.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 # [*port*]
 #   Port on which the self-hosting server will listen.
-#   Defaults to $::os_service_default.
+#   Defaults to $facts['os_service_default'].
 #
 class zaqar::transport::wsgi(
-  $bind = $::os_service_default,
-  $port = $::os_service_default,
+  $bind = $facts['os_service_default'],
+  $port = $facts['os_service_default'],
 ) {
 
   include zaqar::deps
diff --git a/manifests/wsgi/apache.pp b/manifests/wsgi/apache.pp
index e7a5fe9..cefff72 100644
--- a/manifests/wsgi/apache.pp
+++ b/manifests/wsgi/apache.pp
@@ -22,7 +22,7 @@
 #
 # [*servername*]
 #   (Optional) The servername for the virtualhost.
-#   Defaults to $::fqdn
+#   Defaults to $facts['networking']['fqdn']
 #
 # [*port*]
 #   (Optional) The port.
@@ -42,7 +42,7 @@
 #
 # [*workers*]
 #   (Optional) Number of WSGI workers to spawn.
-#   Defaults to $::os_workers
+#   Defaults to $facts['os_workers']
 #
 # [*priority*]
 #   (Optional) The priority for the vhost.
@@ -123,12 +123,12 @@
 #   class { 'zaqar::wsgi::apache': }
 #
 class zaqar::wsgi::apache (
-  $servername                  = $::fqdn,
+  $servername                  = $facts['networking']['fqdn'],
   $port                        = 8888,
   $bind_host                   = undef,
   $path                        = '/',
   $ssl                         = false,
-  $workers                     = $::os_workers,
+  $workers                     = $facts['os_workers'],
   $ssl_cert                    = undef,
   $ssl_key                     = undef,
   $ssl_chain                   = undef,
diff --git a/spec/classes/zaqar_client_spec.rb b/spec/classes/zaqar_client_spec.rb
index 942d671..fefa478 100644
--- a/spec/classes/zaqar_client_spec.rb
+++ b/spec/classes/zaqar_client_spec.rb
@@ -27,7 +27,7 @@ describe 'zaqar::client' do
       end
 
       let(:platform_params) do
-        case facts[:osfamily]
+        case facts[:os]['family']
         when 'Debian'
           { :client_package_name => 'python3-zaqarclient' }
         when 'RedHat'
diff --git a/spec/classes/zaqar_db_sync_spec.rb b/spec/classes/zaqar_db_sync_spec.rb
index d4bb5a2..2c8c7d0 100644
--- a/spec/classes/zaqar_db_sync_spec.rb
+++ b/spec/classes/zaqar_db_sync_spec.rb
@@ -31,10 +31,7 @@ describe 'zaqar::db::sync' do
   }).each do |os,facts|
     context "on #{os}" do
       let (:facts) do
-        facts.merge(OSDefaults.get_facts({
-          :os_workers     => 8,
-          :concat_basedir => '/var/lib/puppet/concat'
-        }))
+        facts.merge(OSDefaults.get_facts())
       end
 
       it_configures 'zaqar-dbsync'
diff --git a/spec/classes/zaqar_init_spec.rb b/spec/classes/zaqar_init_spec.rb
index 07b1535..493d1c2 100644
--- a/spec/classes/zaqar_init_spec.rb
+++ b/spec/classes/zaqar_init_spec.rb
@@ -85,7 +85,7 @@ describe 'zaqar' do
       end
 
       let(:platform_params) do
-        case facts[:osfamily]
+        case facts[:os]['family']
         when 'Debian'
           { :zaqar_common_package => 'zaqar-server' }
         when 'RedHat'
diff --git a/spec/classes/zaqar_server_spec.rb b/spec/classes/zaqar_server_spec.rb
index 207963c..b869a03 100644
--- a/spec/classes/zaqar_server_spec.rb
+++ b/spec/classes/zaqar_server_spec.rb
@@ -28,7 +28,7 @@ describe 'zaqar::server' do
       end
 
       let(:platform_params) do
-        case facts[:osfamily]
+        case facts[:os]['family']
         when 'Debian'
           { :zaqar_service_name => 'zaqar-server' }
         when 'RedHat'
diff --git a/spec/classes/zaqar_wsgi_apache_spec.rb b/spec/classes/zaqar_wsgi_apache_spec.rb
index 1f6a90f..1bb5062 100644
--- a/spec/classes/zaqar_wsgi_apache_spec.rb
+++ b/spec/classes/zaqar_wsgi_apache_spec.rb
@@ -10,7 +10,7 @@ describe 'zaqar::wsgi::apache' do
         :group                       => 'zaqar',
         :path                        => '/',
         :priority                    => 10,
-        :servername                  => facts[:fqdn],
+        :servername                  => 'foo.example.com',
         :ssl                         => false,
         :threads                     => 1,
         :user                        => 'zaqar',
@@ -143,14 +143,12 @@ describe 'zaqar::wsgi::apache' do
     context "on #{os}" do
       let (:facts) do
         facts.merge!(OSDefaults.get_facts({
-          :os_workers     => 42,
-          :concat_basedir => '/var/lib/puppet/concat',
-          :fqdn           => 'some.host.tld',
+          :os_workers => 42,
         }))
       end
 
       let(:platform_params) do
-        case facts[:osfamily]
+        case facts[:os]['family']
         when 'Debian'
           {
             :wsgi_script_path   => '/usr/lib/cgi-bin/zaqar',
diff --git a/spec/defines/zaqar_server_instance_spec.rb b/spec/defines/zaqar_server_instance_spec.rb
index e0bdaf8..575731e 100644
--- a/spec/defines/zaqar_server_instance_spec.rb
+++ b/spec/defines/zaqar_server_instance_spec.rb
@@ -47,7 +47,7 @@ describe 'zaqar::server_instance' do
       end
 
       let(:platform_params) do
-        case facts[:osfamily]
+        case facts[:os]['family']
         when 'Debian'
           { :zaqar_service_name => 'zaqar-server' }
         when 'RedHat'