diff --git a/manifests/api.pp b/manifests/api.pp
index 3a569b90..5216b5db 100644
--- a/manifests/api.pp
+++ b/manifests/api.pp
@@ -194,15 +194,12 @@ class trove::api(
   $auth_protocol                = 'http',
 ) inherits trove {
 
-  require ::keystone::python
+  include ::trove::deps
   include ::trove::db
+  include ::trove::db::sync
   include ::trove::logging
   include ::trove::params
 
-  Trove_config<||> ~> Exec['post-trove_config']
-  Trove_config<||> ~> Service['trove-api']
-  Trove_api_paste_ini<||> ~> Service['trove-api']
-
   # basic service config
   trove_config {
     'DEFAULT/bind_host':                    value => $bind_host;
diff --git a/manifests/client.pp b/manifests/client.pp
index 1c255290..c1a47787 100644
--- a/manifests/client.pp
+++ b/manifests/client.pp
@@ -21,20 +21,26 @@
 #
 # === Parameters:
 #
+# [*client_package_name*]
+#   (optional) The name of python trove client package
+#   Defaults to $trove::params::client_package_name
+#
 # [*package_ensure*]
 #   (optional) The state of the package
 #   Defaults to present
 #
 #
 class trove::client (
-  $package_ensure = present
-) {
+  $client_package_name = $trove::params::client_package_name,
+  $package_ensure = present,
+) inherits trove::params {
 
-  include ::trove::params
+  include ::trove::deps
 
   package { 'python-troveclient':
     ensure => $package_ensure,
-    name   => $::trove::params::client_package_name,
+    name   => $client_package_name,
+    tag    => 'openstack',
   }
 
 }
diff --git a/manifests/conductor.pp b/manifests/conductor.pp
index fa69762b..a56a5155 100644
--- a/manifests/conductor.pp
+++ b/manifests/conductor.pp
@@ -64,11 +64,9 @@ class trove::conductor(
   $conductor_manager         = 'trove.conductor.manager.Manager',
 ) inherits trove {
 
+  include ::trove::deps
   include ::trove::params
 
-  Trove_conductor_config<||> ~> Exec['post-trove_config']
-  Trove_conductor_config<||> ~> Service['trove-conductor']
-
   if $::trove::database_connection {
     if($::trove::database_connection =~ /mysql:\/\/\S+:\S+@\S+\/\S+/) {
       require 'mysql::bindings'
diff --git a/manifests/config.pp b/manifests/config.pp
index 93d63136..afbb15ee 100644
--- a/manifests/config.pp
+++ b/manifests/config.pp
@@ -69,6 +69,8 @@ class trove::config (
   $trove_api_paste_ini      = {},
 ) {
 
+  include ::trove::deps
+
   validate_hash($trove_config)
   validate_hash($trove_taskmanager_config)
   validate_hash($trove_conductor_config)
diff --git a/manifests/db.pp b/manifests/db.pp
index 9368ba7e..9a2a9fb2 100644
--- a/manifests/db.pp
+++ b/manifests/db.pp
@@ -43,6 +43,7 @@ class trove::db (
   $database_max_overflow   = 20,
 ) {
 
+  include ::trove::deps
   include ::trove::params
 
   # NOTE(spredzy): In order to keep backward compatibility we rely on the pick function
@@ -85,7 +86,7 @@ class trove::db (
       package {'trove-backend-package':
         ensure => present,
         name   => $backend_package,
-        tag    => 'openstack',
+        tag    => ['openstack', 'trove-package'],
       }
     }
 
diff --git a/manifests/db/mysql.pp b/manifests/db/mysql.pp
index 145fd783..96a7a7c4 100644
--- a/manifests/db/mysql.pp
+++ b/manifests/db/mysql.pp
@@ -59,6 +59,8 @@ class trove::db::mysql(
   $collate       = 'utf8_general_ci',
 ) {
 
+  include ::trove::deps
+
   validate_string($password)
 
   ::openstacklib::db::mysql { 'trove':
@@ -71,5 +73,7 @@ class trove::db::mysql(
     allowed_hosts => $allowed_hosts,
   }
 
-  ::Openstacklib::Db::Mysql['trove'] ~> Exec<| title == 'trove-manage db_sync' |>
+  Anchor['trove::db::begin']
+  ~> Class['trove::db::mysql']
+  ~> Anchor['trove::db::end']
 }
diff --git a/manifests/db/postgresql.pp b/manifests/db/postgresql.pp
index f9763192..73f6a43d 100644
--- a/manifests/db/postgresql.pp
+++ b/manifests/db/postgresql.pp
@@ -32,7 +32,9 @@ class trove::db::postgresql(
   $privileges = 'ALL',
 ) {
 
-  Class['trove::db::postgresql'] -> Service<| title == 'trove' |>
+  include ::trove::deps
+
+  validate_string($password)
 
   ::openstacklib::db::postgresql { 'trove':
     password_hash => postgresql_password($user, $password),
@@ -42,6 +44,7 @@ class trove::db::postgresql(
     privileges    => $privileges,
   }
 
-  ::Openstacklib::Db::Postgresql['trove']    ~> Exec<| title == 'trove-manage db_sync' |>
-
+  Anchor['trove::db::begin']
+  ~> Class['trove::db::postgresql']
+  ~> Anchor['trove::db::end']
 }
diff --git a/manifests/db/sync.pp b/manifests/db/sync.pp
index 9d3f947e..0b9146f3 100644
--- a/manifests/db/sync.pp
+++ b/manifests/db/sync.pp
@@ -18,10 +18,18 @@
 # Class to execute "trove-manage db_sync
 #
 class trove::db::sync {
+
+  include ::trove::deps
+
   exec { 'trove-manage db_sync':
     path        => '/usr/bin',
     user        => 'trove',
     refreshonly => true,
-    subscribe   => Trove_config['database/connection'],
+    subscribe   => [
+      Anchor['trove::install::end'],
+      Anchor['trove::config::end'],
+      Anchor['trove::dbsync::begin']
+    ],
+    notify      => Anchor['trove::dbsync::end'],
   }
 }
diff --git a/manifests/deps.pp b/manifests/deps.pp
new file mode 100644
index 00000000..f872770c
--- /dev/null
+++ b/manifests/deps.pp
@@ -0,0 +1,65 @@
+# == Class: trove::deps
+#
+#  trove anchors and dependency management
+#
+class trove::deps {
+  # Setup anchors for install, config and service phases of the module.  These
+  # anchors allow external modules to hook the begin and end of any of these
+  # phases.  Package or service management can also be replaced by ensuring the
+  # package is absent or turning off service management and having the
+  # replacement depend on the appropriate anchors.  When applicable, end tags
+  # should be notified so that subscribers can determine if installation,
+  # config or service state changed and act on that if needed.
+  anchor { 'trove::install::begin': }
+  -> Package<| tag == 'trove-package'|>
+  ~> anchor { 'trove::install::end': }
+  -> anchor { 'trove::config::begin': }
+  -> Trove_config<||>
+  ~> anchor { 'trove::config::end': }
+  -> anchor { 'trove::db::begin': }
+  -> anchor { 'trove::db::end': }
+  ~> anchor { 'trove::dbsync::begin': }
+  -> anchor { 'trove::dbsync::end': }
+  ~> anchor { 'trove::service::begin': }
+  ~> Service<| tag == 'trove-service' |>
+  ~> anchor { 'trove::service::end': }
+
+  # Include all the other trove config pieces in the config block.
+  # Don't put them above because there's no chain between each individual part
+  # of the config.
+  Anchor['trove::config::begin']
+  -> Trove_taskmanager_config<||>
+  ~> Anchor['trove::config::end']
+  Anchor['trove::config::begin']
+  -> Trove_conductor_config<||>
+  ~> Anchor['trove::config::end']
+  Anchor['trove::config::begin']
+  -> Trove_guestagent_config<||>
+  ~> Anchor['trove::config::end']
+
+  # Also include paste ini config in the config section
+  Anchor['trove::config::begin']
+  -> Trove_api_paste_ini<||>
+  ~> Anchor['trove::config::end']
+
+  # policy config should occur in the config block also as soon as
+  # puppet-trove supports it. Leave commented out for now.
+  # Anchor['trove::config::begin']
+  # -> Openstacklib::Policy::Base<||>
+  # ~> Anchor['trove::config::end']
+
+  # We need troveclient installed before marking service end so that trove
+  # will have clients available to create resources. This tag handles the
+  # troveclient but indirectly since the client is not available in
+  # all catalogs that don't need the client class (like many spec tests).
+  # Once the troveclient is installed we will setup the datastores and
+  # datastore_versions. Datastore_versions must come after datastores.
+  Package<| tag == 'openstack'|>
+  ~> Anchor['trove::service::end']
+  -> Trove_datastore<||>
+  -> Trove_datastore_version<||>
+
+  # Installation or config changes will always restart services.
+  Anchor['trove::install::end'] ~> Anchor['trove::service::begin']
+  Anchor['trove::config::end']  ~> Anchor['trove::service::begin']
+}
diff --git a/manifests/generic_service.pp b/manifests/generic_service.pp
index 2201eb8b..d612ca15 100644
--- a/manifests/generic_service.pp
+++ b/manifests/generic_service.pp
@@ -55,19 +55,16 @@ define trove::generic_service(
   $ensure_package = 'present'
 ) {
 
+  include ::trove::deps
   include ::trove::params
-  include ::trove::db::sync
 
   $trove_title = "trove-${name}"
-  Exec['post-trove_config'] ~> Service<| title == $trove_title |>
-  Exec<| title == 'trove-manage db_sync' |> ~> Service<| title == $trove_title |>
 
   if ($package_name) {
     if !defined(Package[$package_name]) {
       package { $trove_title:
         ensure => $ensure_package,
         name   => $package_name,
-        notify => Service[$trove_title],
         tag    => ['openstack', 'trove-package'],
       }
     }
diff --git a/manifests/guestagent.pp b/manifests/guestagent.pp
index 0b719fa1..40a89976 100644
--- a/manifests/guestagent.pp
+++ b/manifests/guestagent.pp
@@ -69,11 +69,9 @@ class trove::guestagent(
   $control_exchange          = 'trove'
 ) inherits trove {
 
+  include ::trove::deps
   include ::trove::params
 
-  Trove_guestagent_config<||> ~> Exec['post-trove_config']
-  Trove_guestagent_config<||> ~> Service['trove-guestagent']
-
   # basic service config
   trove_guestagent_config {
     'DEFAULT/verbose':                      value => $verbose;
@@ -92,7 +90,7 @@ class trove::guestagent(
     trove_guestagent_config { 'DEFAULT/os_region_name': value => $::trove::os_region_name }
   }
   else {
-    trove_guestagent_config {'DEFAULT/os_region_name': ensure => absent }
+    trove_guestagent_config { 'DEFAULT/os_region_name': ensure => absent }
   }
 
   trove_guestagent_config {
diff --git a/manifests/init.pp b/manifests/init.pp
index c3b14854..55d2cbf1 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -285,15 +285,9 @@ class trove(
   $qpid_protocol                = undef,
   $qpid_tcp_nodelay             = undef,
 ) {
+  include ::trove::deps
   include ::trove::params
 
-  exec { 'post-trove_config':
-    command     => '/bin/echo "Trove config has changed"',
-    refreshonly => true,
-  }
-
-  Trove_datastore<||> -> Trove_datastore_version<||>
-
   if $nova_compute_url {
     trove_config { 'DEFAULT/nova_compute_url': value => $nova_compute_url }
   }
diff --git a/manifests/keystone/auth.pp b/manifests/keystone/auth.pp
index 8051f76d..24ff6fec 100644
--- a/manifests/keystone/auth.pp
+++ b/manifests/keystone/auth.pp
@@ -139,6 +139,8 @@ class trove::keystone::auth (
   $admin_address       = undef,
 ) {
 
+  include ::trove::deps
+
   if $port {
     warning('The port parameter is deprecated, use public_url, internal_url and admin_url instead.')
   }
@@ -203,7 +205,7 @@ class trove::keystone::auth (
   Keystone_user_role["${auth_name}@${tenant}"] ~> Service <| tag == 'trove-server' |>
 
   Keystone_endpoint<| title == "${region}/${real_service_name}::${service_type}" |>
-        ~> Service <| tag == 'trove-server' |>
+  ~> Service <| tag == 'trove-server' |>
 
   keystone::resource::service_identity { 'trove':
     configure_user      => true,
diff --git a/manifests/logging.pp b/manifests/logging.pp
index bcb41921..d08fbdaa 100644
--- a/manifests/logging.pp
+++ b/manifests/logging.pp
@@ -116,6 +116,8 @@ class trove::logging(
   $log_date_format               = $::os_service_default,
 ) {
 
+  include ::trove::deps
+
   # NOTE(spredzy): In order to keep backward compatibility we rely on the pick function
   # to use trove::<myparam> first then trove::logging::<myparam>.
   $use_syslog_real   = pick($::trove::api::use_syslog, $use_syslog)
@@ -153,4 +155,3 @@ class trove::logging(
     'DEFAULT/log_date_format'               : value => $log_date_format;
   }
 }
-
diff --git a/manifests/quota.pp b/manifests/quota.pp
index 874ea58f..bed9b30d 100644
--- a/manifests/quota.pp
+++ b/manifests/quota.pp
@@ -33,6 +33,8 @@ class trove::quota (
   $quota_driver             = 'trove.quota.quota.DbQuotaDriver',
 ) {
 
+  include ::trove::deps
+
   trove_config {
     'DEFAULT/max_instances_per_user':   value => $max_instances_per_user;
     'DEFAULT/max_accepted_volume_size': value => $max_accepted_volume_size;
diff --git a/manifests/taskmanager.pp b/manifests/taskmanager.pp
index 48fafb1f..a4f18803 100644
--- a/manifests/taskmanager.pp
+++ b/manifests/taskmanager.pp
@@ -101,12 +101,9 @@ class trove::taskmanager(
   $taskmanager_queue        = 'taskmanager',
 ) inherits trove {
 
+  include ::trove::deps
   include ::trove::params
 
-  Package[$::trove::params::taskmanager_package_name] -> Trove_taskmanager_config<||>
-  Trove_taskmanager_config<||> ~> Exec['post-trove_config']
-  Trove_taskmanager_config<||> ~> Service['trove-taskmanager']
-
   if $::trove::database_connection {
     if($::trove::database_connection =~ /mysql:\/\/\S+:\S+@\S+\/\S+/) {
       require 'mysql::bindings'
@@ -303,7 +300,7 @@ class trove::taskmanager(
     if $use_guestagent_template {
       file { $guestagent_config_file:
         content => template('trove/trove-guestagent.conf.erb'),
-        require => Package[$::trove::params::taskmanager_package_name]
+        require => Anchor['trove::install::end'],
       }
     } else {
       class {'::trove::guestagent':
diff --git a/releasenotes/notes/external_dependency_management-4f5c1e349d9983fb.yaml b/releasenotes/notes/external_dependency_management-4f5c1e349d9983fb.yaml
new file mode 100644
index 00000000..a5eb3f98
--- /dev/null
+++ b/releasenotes/notes/external_dependency_management-4f5c1e349d9983fb.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - Dependencies are now managed in an external class.
+    This allows installing Trove via other methods besides
+    packages.
diff --git a/releasenotes/notes/make_client_more_configurable-aa43f623d8c9d3c7.yaml b/releasenotes/notes/make_client_more_configurable-aa43f623d8c9d3c7.yaml
new file mode 100644
index 00000000..7c1e6f57
--- /dev/null
+++ b/releasenotes/notes/make_client_more_configurable-aa43f623d8c9d3c7.yaml
@@ -0,0 +1,4 @@
+---
+features:
+  - The client_package_name is now configurable.
+    It defaults to the name in the params class.
diff --git a/spec/classes/trove_api_spec.rb b/spec/classes/trove_api_spec.rb
index 609591d5..685dd1c0 100644
--- a/spec/classes/trove_api_spec.rb
+++ b/spec/classes/trove_api_spec.rb
@@ -55,7 +55,7 @@ describe 'trove::api' do
         is_expected.to contain_package('trove-api').with(
           :name   => platform_params[:api_package_name],
           :ensure => 'present',
-          :notify => 'Service[trove-api]'
+          :tag    => ['openstack', 'trove-package'],
         )
       end
 
diff --git a/spec/classes/trove_conductor_spec.rb b/spec/classes/trove_conductor_spec.rb
index a78ba4c7..99a86f21 100644
--- a/spec/classes/trove_conductor_spec.rb
+++ b/spec/classes/trove_conductor_spec.rb
@@ -21,7 +21,7 @@ describe 'trove::conductor' do
         is_expected.to contain_package('trove-conductor').with(
           :name   => platform_params[:conductor_package_name],
           :ensure => 'present',
-          :notify => 'Service[trove-conductor]'
+          :tag    => ['openstack', 'trove-package'],
         )
       end
 
diff --git a/spec/classes/trove_db_spec.rb b/spec/classes/trove_db_spec.rb
index a24cbe22..c72624a8 100644
--- a/spec/classes/trove_db_spec.rb
+++ b/spec/classes/trove_db_spec.rb
@@ -93,7 +93,7 @@ describe 'trove::db' do
         is_expected.to contain_package('trove-backend-package').with(
           :ensure => 'present',
           :name   => 'python-pymysql',
-          :tag    => 'openstack'
+          :tag    => ['openstack', 'trove-package'],
         )
       end
     end
diff --git a/spec/classes/trove_deps_spec.rb b/spec/classes/trove_deps_spec.rb
new file mode 100644
index 00000000..aaba51ac
--- /dev/null
+++ b/spec/classes/trove_deps_spec.rb
@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe 'trove::deps' do
+
+  it 'set up the anchors' do
+    is_expected.to contain_anchor('trove::install::begin')
+    is_expected.to contain_anchor('trove::install::end')
+    is_expected.to contain_anchor('trove::config::begin')
+    is_expected.to contain_anchor('trove::config::end')
+    is_expected.to contain_anchor('trove::db::begin')
+    is_expected.to contain_anchor('trove::db::end')
+    is_expected.to contain_anchor('trove::dbsync::begin')
+    is_expected.to contain_anchor('trove::dbsync::end')
+    is_expected.to contain_anchor('trove::service::begin')
+    is_expected.to contain_anchor('trove::service::end')
+  end
+end
diff --git a/spec/classes/trove_guestagent_spec.rb b/spec/classes/trove_guestagent_spec.rb
index 1f7e542b..8a8ac5ab 100644
--- a/spec/classes/trove_guestagent_spec.rb
+++ b/spec/classes/trove_guestagent_spec.rb
@@ -22,7 +22,7 @@ describe 'trove::guestagent' do
         is_expected.to contain_package('trove-guestagent').with(
           :name   => platform_params[:guestagent_package_name],
           :ensure => 'present',
-          :notify => 'Service[trove-guestagent]'
+          :tag    => ['openstack', 'trove-package']
         )
       end
 
diff --git a/spec/classes/trove_taskmanager_spec.rb b/spec/classes/trove_taskmanager_spec.rb
index e5f3a501..272f222a 100644
--- a/spec/classes/trove_taskmanager_spec.rb
+++ b/spec/classes/trove_taskmanager_spec.rb
@@ -46,7 +46,7 @@ describe 'trove::taskmanager' do
         is_expected.to contain_package('trove-taskmanager').with(
           :name   => platform_params[:taskmanager_package_name],
           :ensure => 'present',
-          :notify => 'Service[trove-taskmanager]'
+          :tag    => ['openstack', 'trove-package']
         )
       end