diff --git a/lib/pact_broker/app.rb b/lib/pact_broker/app.rb
index 586fb72bf..e308e7e2d 100644
--- a/lib/pact_broker/app.rb
+++ b/lib/pact_broker/app.rb
@@ -84,7 +84,6 @@ def call env
     attr_reader :custom_ui, :create_pact_broker_api_block
 
     def post_configure
-      configure_logger
       SuckerPunch.logger = configuration.custom_logger || SemanticLogger["SuckerPunch"]
       configure_database_connection
       configure_sucker_punch
@@ -242,14 +241,6 @@ def configure_sucker_punch
       end
     end
 
-    def configure_logger
-      if SemanticLogger.appenders.empty?
-        path = configuration.log_dir + "/pact_broker.log"
-        FileUtils.mkdir_p(configuration.log_dir)
-        SemanticLogger.add_appender(file_name: path, formatter: PactBroker::Logging::DefaultFormatter.new)
-      end
-    end
-
     def running_app
       @running_app ||= begin
         prepare_app
@@ -262,7 +253,7 @@ def running_app
     end
 
     def print_startup_message
-      if ENV["PACT_BROKER_HIDE_PACTFLOW_MESSAGES"] != "true"
+      unless configuration.hide_pactflow_messages
         logger.info "\n\n#{'*' * 80}\n\nWant someone to manage your Pact Broker for you? Check out https://pactflow.io/oss for a hardened, fully supported SaaS version of the Pact Broker with an improved UI + more.\n\n#{'*' * 80}\n"
       end
     end
diff --git a/lib/pact_broker/config/runtime_configuration.rb b/lib/pact_broker/config/runtime_configuration.rb
index 7b7127f72..fbb224435 100644
--- a/lib/pact_broker/config/runtime_configuration.rb
+++ b/lib/pact_broker/config/runtime_configuration.rb
@@ -37,7 +37,10 @@ class RuntimeConfiguration < Anyway::Config
 
       LOGGING_ATTRIBUTES = {
         log_dir: File.expand_path("./log"),
+        log_level: :info,
+        log_format: nil,
         warning_error_class_names: ["Sequel::ForeignKeyConstraintViolation", "PG::QueryCanceled"],
+        hide_pactflow_messages: false
       }
 
       WEBHOOK_ATTRIBUTES = {
@@ -82,6 +85,14 @@ def self.getter_and_setter_method_names
 
       sensitive_values(:database_url, :database_password)
 
+      def log_level= log_level
+        super(log_level&.to_sym)
+      end
+
+      def log_format= log_format
+        super(log_format&.to_sym)
+      end
+
       def database_port= database_port
         super(database_port&.to_i)
       end
diff --git a/lib/pact_broker/configuration.rb b/lib/pact_broker/configuration.rb
index 47a73834a..ca576322a 100644
--- a/lib/pact_broker/configuration.rb
+++ b/lib/pact_broker/configuration.rb
@@ -66,7 +66,6 @@ def initialize
       @authenticate_with_basic_auth = nil
       @authorize = nil
       @api_error_reporters = []
-      @semantic_logger = SemanticLogger["root"]
     end
 
     # rubocop: disable Metrics/MethodLength
@@ -108,11 +107,29 @@ def self.default_configuration
     end
     # rubocop: enable Metrics/MethodLength
 
+    def logger_from_runtime_configuration
+      @logger_from_runtime_configuration ||= begin
+        SemanticLogger.default_level = runtime_configuration.log_level
+        if runtime_configuration.log_dir
+          path = runtime_configuration.log_dir + "/pact_broker.log"
+          FileUtils.mkdir_p(runtime_configuration.log_dir)
+          @default_appender = SemanticLogger.add_appender(file_name: path, formatter: runtime_configuration.log_format)
+        else
+          @default_appender = SemanticLogger.add_appender(io: $stdout, formatter: runtime_configuration.log_format)
+        end
+        @logger_from_runtime_configuration = SemanticLogger["pact-broker"]
+      end
+    end
+
     def logger
-      custom_logger || @semantic_logger
+      custom_logger || logger_from_runtime_configuration
     end
 
     def logger= logger
+      if @default_appender && SemanticLogger.appenders.include?(@default_appender)
+        SemanticLogger.remove_appender(@default_appender)
+        @default_appender = nil
+      end
       @custom_logger = logger
     end
 
diff --git a/lib/pact_broker/logging.rb b/lib/pact_broker/logging.rb
index a3c67d2d4..25e428769 100644
--- a/lib/pact_broker/logging.rb
+++ b/lib/pact_broker/logging.rb
@@ -53,7 +53,7 @@ def log_error e, description = nil
         message = "#{description} - #{message}" if description
         logger.error message
       end
-      if ENV["PACT_BROKER_HIDE_PACTFLOW_MESSAGES"] != "true"
+      unless PactBroker.configuration.hide_pactflow_messages
         logger.info "\n\n#{'*' * 80}\n\nPrefer it was someone else's job to deal with this error? Check out https://pactflow.io/oss for a hardened, fully supported SaaS version of the Pact Broker with an improved UI  + more.\n\n#{'*' * 80}\n"
       end
     end