diff --git a/pages/students/2016/jan_holp/dp2021/zdrojove_subory/indices.js b/pages/students/2016/jan_holp/dp2021/zdrojove_subory/indices.js
new file mode 100644
index 000000000..10fd4833c
--- /dev/null
+++ b/pages/students/2016/jan_holp/dp2021/zdrojove_subory/indices.js
@@ -0,0 +1,28 @@
+(function () {
+  'use strict';
+
+  const elasticsearch = require('elasticsearch');
+  const esClient = new elasticsearch.Client({
+    host: '127.0.0.1:9200',
+    log: 'error'
+  });
+
+  const indices = function indices() {
+    return esClient.cat.indices({v: true})
+    .then(console.log)
+    .catch(err => console.error(`Error connecting to the es client: ${err}`));
+  };
+
+  // only for testing purposes
+  // all calls should be initiated through the module
+  const test = function test() {
+    console.log(`elasticsearch indices information:`);
+    indices();
+  };
+
+  test();
+
+  module.exports = {
+    indices
+  };
+} ());