diff --git a/app/controllers/fluentd/agents_controller.rb b/app/controllers/fluentd/agents_controller.rb
index 0def841..8d3e156 100644
--- a/app/controllers/fluentd/agents_controller.rb
+++ b/app/controllers/fluentd/agents_controller.rb
@@ -1,11 +1,6 @@
 class Fluentd::AgentsController < ApplicationController
   before_action :find_fluentd
 
-  def show
-    @error_count = 10
-    @errors = @fluentd.agent.recent_errors(@error_count)
-  end
-
   def start
     unless @fluentd.agent.start
       flash[:error] = t("error.fluentd_start_failed") + @fluentd.agent.log_tail(1).first
@@ -27,10 +22,6 @@ class Fluentd::AgentsController < ApplicationController
     redirect_to fluentd_path(@fluentd), status: 303 # 303 is change HTTP Verb GET
   end
 
-  def log
-    render text: @fluentd.agent.log, content_type: "text/plain"
-  end
-
   def log_tail
     @logs = @fluentd.agent.log_tail(params[:limit]).reverse if @fluentd
     render json: @logs
diff --git a/app/controllers/fluentd_controller.rb b/app/controllers/fluentd_controller.rb
index 068ced6..e19baea 100644
--- a/app/controllers/fluentd_controller.rb
+++ b/app/controllers/fluentd_controller.rb
@@ -47,10 +47,6 @@ class FluentdController < ApplicationController
 
   private
 
-  def find_fluentd
-    @fluentd = Fluentd.instance
-  end
-
   def fluentd_params
     params.require(:fluentd).permit(:log_file, :pid_file, :config_file, :variant, :api_endpoint)
   end