diff --git a/config.ru b/config.ru
index 1cefb2b..eb19990 100644
--- a/config.ru
+++ b/config.ru
@@ -1,16 +1,12 @@
 require 'rack'
-require_relative 'lib/lxc_collector'
-require_relative 'lib/authorized_keys_collector'
+require 'json'
 require 'prometheus/client/formats/text'
+require_relative 'lib/lxc_collector'
 
 run lambda {|env|
   req = Rack::Request.new env
   case req.path
 
-  when '/authorized_keys'
-    collector = AuthorizedKeysCollector.new
-    [200, {"Content-Type" => "text/javascript"}, [collector.collect.to_json]}]
-
   when '/metrics'
     collector = LxcCollector.new
     [200, {"Content-Type" => "text/plain"}, [Prometheus::Client::Formats::Text.marshal( collector.collect)]]
diff --git a/lib/authorized_keys.rb b/lib/authorized_keys.rb
deleted file mode 100644
index c6246af..0000000
--- a/lib/authorized_keys.rb
+++ /dev/null
@@ -1,59 +0,0 @@
-class AuthorizedKeys
-  LINE = %r/^
-    (?:
-      (?<options> .+?)
-    \s+)?
-      (?<type>    (?:sk-)?ssh-[a-zA-Z0-9.@-]+)
-    \s+
-      (?<key>     \S+)
-    (?:\s+
-      (?<comment> .*)
-    )?
-    $/x
-
-  def self.parse line
-    opts, m = {}, LINE.match( line)
-    raise "Invalid authorized keys line: #{line}"  unless m
-    if m[:options]
-      o = m[:options].dup
-      while not o.empty?
-        case o
-
-        when /^([a-z0-9_-]+)(.*)$/i
-          k, o = $1.to_sym, $2
-          case o
-          when '' then opts[k] = true
-          when /^,(.*)$/ then opts[k], o = true, $1
-          when /^="([^"]*)"(.*)$/i, /^=([a-z_0-9:-]*)(.*?)$/i
-            opts[k], o = $1, $2
-            case o
-            when /^,(.*)/ then o = $1
-            when '' then o = ''
-            else raise "Invalid options-string at: #{o}"
-            end
-          else raise "Invalid options-string at: #{o}"
-          end
-
-        when /^\s*#/
-          # comment
-        end
-      end
-    end
-    new m[:type], m[:key], m[:comment], **opts
-  end
-
-  attr_reader :type, :key, :comment, :options
-
-  def initialize type, key, comment, **options
-    @type, @key, @comment, @options = type, key, comment, options
-  end
-
-  def to_h() {type: @type, key: @key, comment: @comment, options: @options} end
-  def to_a() [@type, @key, @comment, @options] end
-  def to_s
-    [
-      @options.map {|k,v| case v when true then "#{k}" else "#{k}=\"#{v}\"" end }.join( ','),
-      @type, @key, @comment
-    ].join ' '
-  end
-end
diff --git a/lib/authorized_keys_collector.rb b/lib/authorized_keys_collector.rb
deleted file mode 100755
index 58eab69..0000000
--- a/lib/authorized_keys_collector.rb
+++ /dev/null
@@ -1,62 +0,0 @@
-#!/usr/bin/env ruby
-
-require 'pathname'
-require 'lxc'
-require 'etc'
-
-require_relative 'ns'
-require_relative 'cborio'
-require_relative 'lxc_extend'
-require_relative 'authorized_keys'
-
-class AuthorizedKeysCollector
-  def initialize
-  end
-
-  def forked wr
-    LXC.running_containers do |ct|
-      pid = ct.init_pid
-      NS.change pid, :pid, :mnt do
-        name = ct.config_item( 'lxc.uts.name')
-        conf = Hash.new {|h,k| h[k] = []}
-        IO.popen %w[sshd -T], err: "/dev/null" do |s|
-          s.each_line do |l|
-            k, v = l.chomp.split( ' ', 2)
-            conf[k.to_sym].push v
-          end
-        end
-        akf = conf[:authorizedkeysfile].flat_map {|e| e.split ' ' }
-        akf.map! do |pn|
-          pn = "%h/#{pn}"  if Pathname.new( pn).relative?
-          pn.gsub( /%h/, "%<home>s").gsub( /%u/, "%<name>s")
-        end
-        while pw = Etc.getpwent
-          wr.write [
-            :authkeys, ct.name, pw.name,
-            akf.each.flat_map do |pn|
-              pn = Pathname.new pn % {name: pw.name, home: pw.dir}
-              pn.exist? ? pn.readlines.map( &:chomp) : []
-            end
-          ]
-        end
-        Etc.endpwent
-      end
-    end
-  end
-
-  def collect
-    pid, io = CBORIO.popen {|io| forked io }
-    io.map do |l|
-      case l[0].to_sym
-      when :authkeys
-        host, user, keys = l[1..3]
-        keys.map! {|k| AuthorizedKeys.parse k }
-        {host: host, user: user, keys: keys}
-      end
-    end
-  end
-end
-
-if Pathname.new( __FILE__).expand_path == Pathname.new( $0).expand_path
-  AuthorizedKeysCollector.new.collect.each {|e| p e }
-end