diff --git a/README.md b/README.md
index dcbf4fce..06a33c56 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,11 @@ class { 'foreman_proxy::plugin::ansible':
 }
 ```
 
+### Katello Container Gateway Support
+
+If installing a Foreman Proxy with the Container Gateway, ensure that the
+postgresql module is available for use on the system.
+
 ## Contributing
 
 * Fork the project
diff --git a/manifests/plugin/container_gateway.pp b/manifests/plugin/container_gateway.pp
index 7f419228..c11ce7ae 100644
--- a/manifests/plugin/container_gateway.pp
+++ b/manifests/plugin/container_gateway.pp
@@ -4,6 +4,18 @@
 #
 # $pulp_endpoint::            Pulp 3 server endpoint
 #
+# $database_backend::         'sqlite' or 'postgres'
+#
+# $postgresql_host::          Host of the postgres database.
+#
+# $postgresql_port::          Port of the postgres database.
+#
+# $postgresql_database::      Name of the postgres database
+#
+# $postgresql_user::          User for the postgres database
+#
+# $postgresql_password::      User password for the postgres database
+#
 # $sqlite_db_path::           Absolute path for the SQLite DB file to exist at
 #
 # $sqlite_timeout::           Database busy timeout in milliseconds
@@ -22,8 +34,14 @@
   Boolean $enabled = true,
   Foreman_proxy::ListenOn $listen_on = 'https',
   Stdlib::HTTPUrl $pulp_endpoint = "https://${facts['networking']['fqdn']}",
+  String $database_backend = 'postgres',
   Stdlib::Absolutepath $sqlite_db_path = '/var/lib/foreman-proxy/smart_proxy_container_gateway.db',
   Optional[Integer] $sqlite_timeout = undef,
+  Stdlib::Host $postgresql_host = 'localhost',
+  Stdlib::Port $postgresql_port = 5432,
+  String $postgresql_database = 'container_gateway',
+  String $postgresql_user = 'foreman-proxy',
+  String $postgresql_password = extlib::cache_data('container_gateway_cache_data', 'db_password', extlib::random_password(32))
 ) {
   foreman_proxy::plugin::module { 'container_gateway':
     version   => $version,
@@ -31,4 +49,15 @@
     feature   => 'Container_Gateway',
     listen_on => $listen_on,
   }
+  include postgresql::server
+  postgresql::server::db { $foreman_proxy::plugin::container_gateway::postgresql_database:
+    user     => $foreman_proxy::plugin::container_gateway::postgresql_user,
+    password => postgresql::postgresql_password(
+      $foreman_proxy::plugin::container_gateway::postgresql_user,
+      $foreman_proxy::plugin::container_gateway::postgresql_password
+    ),
+    encoding => 'utf8',
+    locale   => 'en_US.utf8',
+    require  => Package['glibc-langpack-en'],
+  }
 }
diff --git a/spec/classes/foreman_proxy__plugin__container_gateway_spec.rb b/spec/classes/foreman_proxy__plugin__container_gateway_spec.rb
index 0363fecd..3b07cfa3 100644
--- a/spec/classes/foreman_proxy__plugin__container_gateway_spec.rb
+++ b/spec/classes/foreman_proxy__plugin__container_gateway_spec.rb
@@ -7,12 +7,19 @@
       let(:pre_condition) { 'include foreman_proxy' }
 
       describe 'with default settings' do
+        let :postgresql_password do 'changeme' end
         it { should contain_foreman_proxy__plugin__module('container_gateway') }
         it 'container_gateway.yml should contain the correct configuration' do
           verify_exact_contents(catalogue, '/etc/foreman-proxy/settings.d/container_gateway.yml', [
             '---',
             ':enabled: https',
             ":pulp_endpoint: https://#{facts[:fqdn]}",
+            ':database_backend: postgresql',
+            ':postgresql_host: localhost',
+            ':postgresql_port: 5432',
+            ':postgresql_database: container_gateway',
+            ':postgresql_user: foreman-proxy',
+            ':postgresql_password: changeme',
             ':sqlite_db_path: /var/lib/foreman-proxy/smart_proxy_container_gateway.db'
           ])
         end
@@ -21,8 +28,14 @@
       describe 'with overwritten parameters' do
         let :params do {
           :pulp_endpoint => 'https://test.example.com',
+          :database_backend => 'postgresql',
           :sqlite_db_path => '/dev/null.db',
           :sqlite_timeout => 12345,
+          :postgresql_host => 'test.example.com',
+          :postgresql_port => 5432,
+          :postgresql_database => 'container_gateway',
+          :postgresql_user => 'foreman-proxy',
+          :postgresql_password => 'changeme'
         } end
 
         it 'container_gateway.yml should contain the correct configuration' do
@@ -30,8 +43,14 @@
             '---',
             ':enabled: https',
             ':pulp_endpoint: https://test.example.com',
+            ':database_backend: postgresql',
             ':sqlite_db_path: /dev/null.db',
-            ':sqlite_timeout: 12345'
+            ':sqlite_timeout: 12345',
+            ':postgresql_host: test.example.com',
+            ':postgresql_port: 5432',
+            ':postgresql_database: container_gateway',
+            ':postgresql_user: foreman-proxy',
+            ':postgresql_password: changeme'
           ])
         end
       end
diff --git a/templates/plugin/container_gateway.yml.erb b/templates/plugin/container_gateway.yml.erb
index c50b9ed4..e13fc0a6 100644
--- a/templates/plugin/container_gateway.yml.erb
+++ b/templates/plugin/container_gateway.yml.erb
@@ -2,7 +2,19 @@
 # Container Gateway for Katello
 :enabled: <%= @module_enabled %>
 :pulp_endpoint: <%= scope.lookupvar("foreman_proxy::plugin::container_gateway::pulp_endpoint") %>
+:database_backend: <%= scope.lookupvar("foreman_proxy::plugin::container_gateway::database_backend") %>
 :sqlite_db_path: <%= scope.lookupvar("foreman_proxy::plugin::container_gateway::sqlite_db_path") %>
 <% if scope.lookupvar("foreman_proxy::plugin::container_gateway::sqlite_timeout") -%>
 :sqlite_timeout: <%= scope.lookupvar("foreman_proxy::plugin::container_gateway::sqlite_timeout") %>
 <% end -%>
+:postgresql_connection_string: postgres://<%=
+  "#{scope.lookupvar("foreman_proxy::plugin::container_gateway::postgresql_user")}:" \
+  "#{scope.lookupvar("foreman_proxy::plugin::container_gateway::postgresql_password")}@" \
+  "#{scope.lookupvar("foreman_proxy::plugin::container_gateway::postgresql_host")}:" \
+  "#{scope.lookupvar("foreman_proxy::plugin::container_gateway::postgresql_port")}/" \
+  "#{scope.lookupvar("foreman_proxy::plugin::container_gateway::postgresql_database")}"
+  %>
+:postgresql_host: <%= scope.lookupvar("foreman_proxy::plugin::container_gateway::postgresql_host") %>
+:postgresql_port: <%= scope.lookupvar("foreman_proxy::plugin::container_gateway::postgresql_port") %>
+:postgresql_user: <%= scope.lookupvar("foreman_proxy::plugin::container_gateway::postgresql_user") %>
+:postgresql_password: <%= scope.lookupvar("foreman_proxy::plugin::container_gateway::postgresql_password") %>