diff --git a/data/README.md b/data/README.md
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+# Install/Update template
+
+Install the `task` template in elasticsearch:
+
+``` shell
+INSTANCE=http://something:9200
+TEMPLATE_NAME=template_swh_tasks
+curl -i -H'Content-Type: application/json' -d@./elastic-template.json -XPUT ${INSTANCE}/_template/${TEMPLATE_NAME}
+```
+
+# Update index settings
+
+The index setup is fixed and defined on the template settings basis.
+
+When that setup needs to change, we need to update both the template
+and the existing indices.
+
+To update index settings:
+
+``` shell
+INDEX_NAME=swh-tasks-2017-11
+curl -i -H'Content-Type: application/json' -d@./update-index-settings.json -XPUT ${INSTANCE}/${INDEX_NAME}/_settings
+```
diff --git a/data/update-index-settings.json b/data/update-index-settings.json
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+{
+    "index": {
+        "refresh_interval": "1s"
+    }
+}