diff --git a/app/controllers/concerns/setting_concern.rb b/app/controllers/concerns/setting_concern.rb
new file mode 100644
index 0000000..cf2984b
--- /dev/null
+++ b/app/controllers/concerns/setting_concern.rb
@@ -0,0 +1,34 @@
+module SettingConcern
+  extend ActiveSupport::Concern
+
+  included do
+    before_action :login_required
+    before_action :find_fluentd
+  end
+
+  def show
+    @setting = target_class.new(initial_params)
+  end
+
+  def finish
+    @setting = target_class.new(setting_params)
+    unless @setting.valid?
+      return render "show"
+    end
+
+    @fluentd.agent.config_append @setting.to_config
+    if @fluentd.agent.running?
+      unless @fluentd.agent.restart
+        @setting.errors.add(:base, @fluentd.agent.log_tail(1).first)
+        return render "show"
+      end
+    end
+    redirect_to daemon_setting_path(@fluentd)
+  end
+
+  private
+
+  def setting_params
+    params.require(target_class.to_s.underscore.gsub("/", "_")).permit(*target_class.const_get(:KEYS))
+  end
+end
diff --git a/app/controllers/fluentd/settings/in_syslog_controller.rb b/app/controllers/fluentd/settings/in_syslog_controller.rb
index 9f7035e..c3355de 100644
--- a/app/controllers/fluentd/settings/in_syslog_controller.rb
+++ b/app/controllers/fluentd/settings/in_syslog_controller.rb
@@ -1,34 +1,16 @@
 class Fluentd::Settings::InSyslogController < ApplicationController
-  before_action :login_required
-  before_action :find_fluentd
-
-  def show
-    @setting = Fluentd::Setting::InSyslog.new({
-      bind: "0.0.0.0",
-      port: 5140,
-    })
-  end
-
-  def finish
-    @setting = Fluentd::Setting::InSyslog.new(setting_params)
-    unless @setting.valid?
-      return render "show"
-    end
-
-    @fluentd.agent.config_append @setting.to_config
-    if @fluentd.agent.running?
-      unless @fluentd.agent.restart
-        @setting.errors.add(:base, @fluentd.agent.log_tail(1).first)
-        return render "show"
-      end
-    end
-    redirect_to daemon_setting_path(@fluentd)
-  end
+  include SettingConcern
 
   private
 
-  def setting_params
-    params.require(:fluentd_setting_in_syslog).permit(*Fluentd::Setting::InSyslog::KEYS)
+  def target_class
+    Fluentd::Setting::InSyslog
   end
 
+  def initial_params
+    {
+      bind: "0.0.0.0",
+      port: 5140,
+    }
+  end
 end
diff --git a/app/controllers/fluentd/settings/out_forward_controller.rb b/app/controllers/fluentd/settings/out_forward_controller.rb
index c4d7dcb..e473999 100644
--- a/app/controllers/fluentd/settings/out_forward_controller.rb
+++ b/app/controllers/fluentd/settings/out_forward_controller.rb
@@ -1,35 +1,12 @@
 class Fluentd::Settings::OutForwardController < ApplicationController
-  before_action :login_required
-  before_action :find_fluentd
-
-  def show
-    @setting = Fluentd::Setting::OutForward.new({
-      secondary: {
-        "0" => {
-          type: "file",
-        }
-      }
-    })
-  end
-
-  def finish
-    @setting = Fluentd::Setting::OutForward.new(setting_params)
-    unless @setting.valid?
-      return render "show"
-    end
-
-    @fluentd.agent.config_append @setting.to_config
-    if @fluentd.agent.running?
-      unless @fluentd.agent.restart
-        @setting.errors.add(:base, @fluentd.agent.log_tail(1).first)
-        return render "show"
-      end
-    end
-    redirect_to daemon_setting_path(@fluentd)
-  end
+  include SettingConcern
 
   private
 
+  def target_class
+    Fluentd::Setting::OutForward
+  end
+
   def setting_params
     params.require(:fluentd_setting_out_forward).permit(*Fluentd::Setting::OutForward::KEYS).merge(
       params.require(:fluentd_setting_out_forward).permit(
@@ -39,4 +16,13 @@ class Fluentd::Settings::OutForwardController < ApplicationController
     )
   end
 
+  def initial_params
+    {
+      secondary: {
+        "0" => {
+          type: "file",
+        }
+      }
+    }
+  end
 end
diff --git a/app/controllers/fluentd/settings/out_mongo_controller.rb b/app/controllers/fluentd/settings/out_mongo_controller.rb
index 806bd36..1f0d87a 100644
--- a/app/controllers/fluentd/settings/out_mongo_controller.rb
+++ b/app/controllers/fluentd/settings/out_mongo_controller.rb
@@ -1,36 +1,18 @@
 class Fluentd::Settings::OutMongoController < ApplicationController
-  before_action :login_required
-  before_action :find_fluentd
+  include SettingConcern
 
-  def show
-    @setting = Fluentd::Setting::OutMongo.new({
+  private
+
+  def target_class
+    Fluentd::Setting::OutMongo
+  end
+
+  def initial_params
+    {
       host: "127.0.0.1",
       port: 27017,
       capped: true,
       capped_size: "100m",
-    })
+    }
   end
-
-  def finish
-    @setting = Fluentd::Setting::OutMongo.new(setting_params)
-    unless @setting.valid?
-      return render "show"
-    end
-
-    @fluentd.agent.config_append @setting.to_config
-    if @fluentd.agent.running?
-      unless @fluentd.agent.restart
-        @setting.errors.add(:base, @fluentd.agent.log_tail(1).first)
-        return render "show"
-      end
-    end
-    redirect_to daemon_setting_path(@fluentd)
-  end
-
-  private
-
-  def setting_params
-    params.require(:fluentd_setting_out_mongo).permit(*Fluentd::Setting::OutMongo::KEYS)
-  end
-
 end
diff --git a/app/controllers/fluentd/settings/out_td_controller.rb b/app/controllers/fluentd/settings/out_td_controller.rb
index 990bc19..8e3368d 100644
--- a/app/controllers/fluentd/settings/out_td_controller.rb
+++ b/app/controllers/fluentd/settings/out_td_controller.rb
@@ -1,36 +1,18 @@
 class Fluentd::Settings::OutTdController < ApplicationController
-  before_action :login_required
-  before_action :find_fluentd
+  include SettingConcern
 
-  def show
-    @setting = Fluentd::Setting::OutTd.new({
+  private
+
+  def target_class
+    Fluentd::Setting::OutTd
+  end
+
+  def initial_params
+    {
       buffer_type: "file",
       buffer_path: "/var/log/td-agent/buffer/td",
       auto_create_table: true,
       match: "td.*.*",
-    })
+    }
   end
-
-  def finish
-    @setting = Fluentd::Setting::OutTd.new(setting_params)
-    unless @setting.valid?
-      return render "show"
-    end
-
-    @fluentd.agent.config_append @setting.to_config
-    if @fluentd.agent.running?
-      unless @fluentd.agent.restart
-        @setting.errors.add(:base, @fluentd.agent.log_tail(1).first)
-        return render "show"
-      end
-    end
-    redirect_to daemon_setting_path(@fluentd)
-  end
-
-  private
-
-  def setting_params
-    params.require(:fluentd_setting_out_td).permit(*Fluentd::Setting::OutTd::KEYS)
-  end
-
 end