diff --git a/app/models/fluentd.rb b/app/models/fluentd.rb
index caaac6e..cde0640 100644
--- a/app/models/fluentd.rb
+++ b/app/models/fluentd.rb
@@ -11,7 +11,6 @@ class Fluentd
   before_validation :expand_paths
 
   COLUMNS = [:id, :variant, :log_file, :pid_file, :config_file]
-  JSON_PATH = (ENV["FLUENTD_UI_DATA_DIR"].presence || Rails.root.join("db").to_s) + "/#{Rails.env}-fluentd.json"
   DEFAULT_CONF = <<-CONF.strip_heredoc
     <source>
       # http://docs.fluentd.org/articles/in_forward
@@ -46,6 +45,16 @@ class Fluentd
     %w(fluentd_gem td-agent)
   end
 
+  def self.json_path
+    if ENV["FLUENTD_UI_DATA_DIR"].present?
+      dir = ENV["FLUENTD_UI_DATA_DIR"]
+    else
+      dir = ENV["HOME"] + "/.fluentd-ui/core_data"
+    end
+    FileUtils.mkdir_p(dir)
+    dir + "/#{Rails.env}-fluentd.json"
+  end
+
   def fluentd?
     variant == "fluentd_gem"
   end
@@ -138,12 +147,12 @@ class Fluentd
 
   def self.instance
     return unless exists?
-    attr = JSON.parse(File.read(JSON_PATH))
+    attr = JSON.parse(File.read(json_path))
     Fluentd.new(attr)
   end
 
   def self.exists?
-    File.exists?(JSON_PATH)
+    File.exists?(json_path)
   end
 
   def update_attributes(params)
@@ -158,12 +167,12 @@ class Fluentd
       result[col] = send(col)
       result
     end.to_json
-    File.open(JSON_PATH, "w") do |f|
+    File.open(self.class.json_path, "w") do |f|
       f.write json
     end && ensure_default_config_file
   end
 
   def destroy
-    File.unlink(JSON_PATH)
+    File.unlink(self.class.json_path)
   end
 end
diff --git a/app/models/fluentd/agent/fluentd_gem.rb b/app/models/fluentd/agent/fluentd_gem.rb
index 7c75fd2..a44a088 100644
--- a/app/models/fluentd/agent/fluentd_gem.rb
+++ b/app/models/fluentd/agent/fluentd_gem.rb
@@ -5,12 +5,10 @@ class Fluentd
       include LocalCommon
 
       def self.default_options
-        # TODO: current default options from fluentd --setup, but root permission required for them.
-        #       It could be more user friendly values
         {
-          :pid_file => "/var/run/fluent.pid",
-          :log_file => "/var/log/fluent.log",
-          :config_file => "/etc/fluent/fluent.conf",
+          :pid_file    => "#{ENV["HOME"]}/.fluentd-ui/fluent.pid",
+          :log_file    => "#{ENV["HOME"]}/.fluentd-ui/fluent.log",
+          :config_file => "#{ENV["HOME"]}/.fluentd-ui/fluent.conf",
         }
       end
 
diff --git a/app/views/fluentd/_form.html.haml b/app/views/fluentd/_form.html.haml
index bd3a8e7..e32f0e8 100644
--- a/app/views/fluentd/_form.html.haml
+++ b/app/views/fluentd/_form.html.haml
@@ -9,11 +9,23 @@
       = @fluentd.variant
     %div.form-group
       = f.label :pid_file
-      = f.text_field :pid_file, class: "form-control"
+      - if @fluentd.td_agent?
+        = f.text_field :pid_file, class: "form-control", disabled: true
+        = f.hidden_field :pid_file
+      - else
+        = f.text_field :pid_file, class: "form-control"
     %div.form-group
       = f.label :log_file
-      = f.text_field :log_file, class: "form-control"
+      - if @fluentd.td_agent?
+        = f.text_field :log_file, class: "form-control", disabled: true
+        = f.hidden_field :log_file
+      - else
+        = f.text_field :log_file, class: "form-control"
     %div.form-group
       = f.label :config_file
-      = f.text_field :config_file, class: "form-control"
+      - if @fluentd.td_agent?
+        = f.text_field :config_file, class: "form-control", disabled: true
+        = f.hidden_field :config_file
+      - else
+        = f.text_field :config_file, class: "form-control"
     = f.submit btn, class: "btn btn-primary"
diff --git a/spec/models/fluentd_spec.rb b/spec/models/fluentd_spec.rb
index b201071..e080c49 100644
--- a/spec/models/fluentd_spec.rb
+++ b/spec/models/fluentd_spec.rb
@@ -56,7 +56,7 @@ describe Fluentd do
   end
 
   let(:fluentd) { build(:fluentd) }
-  after { File.unlink(Fluentd::JSON_PATH) if File.exist?(Fluentd::JSON_PATH) }
+  after { File.unlink(Fluentd.json_path) if File.exist?(Fluentd.json_path) }
 
   describe "#valid?" do
     before do