# Elasticsearch High Availability (HA) functionality test **URL:** \ **Category:** Elasticsearch\ **Created:** [May 26, 2017, 10:58am UTC](https://discuss.elastic.co/t/elasticsearch-high-availability-ha-functionality-test/87246 "2017-05-26T10:58:06Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Abhijit\_Paul](https://avatars.discourse-cdn.com/v4/letter/a/8e8cbc/32.png) [@Abhijit\_Paul](https://discuss.elastic.co/u/Abhijit_Paul)\ **Post date:** [May 26, 2017, 10:58am UTC](https://discuss.elastic.co/t/elasticsearch-high-availability-ha-functionality-test/87246/1 "2017-05-26T10:58:06Z")
How to verify Elasticsearch High Availability (HA) functionality working fine? I mean what all check points are there to verify the same? ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [May 26, 2017, 10:59am UTC](https://discuss.elastic.co/t/elasticsearch-high-availability-ha-functionality-test/87246/2 "2017-05-26T10:59:15Z")
What do you mean by HA here? ---
**Author:** ![Abhijit\_Paul](https://avatars.discourse-cdn.com/v4/letter/a/8e8cbc/32.png) [@Abhijit\_Paul](https://discuss.elastic.co/u/Abhijit_Paul)\ **Post date:** [May 26, 2017, 11:09am UTC](https://discuss.elastic.co/t/elasticsearch-high-availability-ha-functionality-test/87246/3 "2017-05-26T11:09:39Z")
elasticsearch.yml > node: > master: true > data: true > ingest: true ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [May 26, 2017, 11:16am UTC](https://discuss.elastic.co/t/elasticsearch-high-availability-ha-functionality-test/87246/4 "2017-05-26T11:16:14Z")
How many nodes do you have in the cluster? ---
**Author:** ![Abhijit\_Paul](https://avatars.discourse-cdn.com/v4/letter/a/8e8cbc/32.png) [@Abhijit\_Paul](https://discuss.elastic.co/u/Abhijit_Paul)\ **Post date:** [May 26, 2017, 11:19am UTC](https://discuss.elastic.co/t/elasticsearch-high-availability-ha-functionality-test/87246/5 "2017-05-26T11:19:30Z")
3 elasticsearch node ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [May 26, 2017, 11:26am UTC](https://discuss.elastic.co/t/elasticsearch-high-availability-ha-functionality-test/87246/6 "2017-05-26T11:26:02Z")
Assuming you have configured the cluster correctly and have all node master eligible and `minimum_master_nodes` set to 2, I suspect you would want to test for single node failures and network partitions affecting one of the nodes. ---
**Author:** ![Abhijit\_Paul](https://avatars.discourse-cdn.com/v4/letter/a/8e8cbc/32.png) [@Abhijit\_Paul](https://discuss.elastic.co/u/Abhijit_Paul)\ **Post date:** [May 26, 2017, 11:40am UTC](https://discuss.elastic.co/t/elasticsearch-high-availability-ha-functionality-test/87246/7 "2017-05-26T11:40:24Z")
Yes, correct basically i wants to test in case one of the elasticsearch node failure (for any reason), I should not loss any data from failure node, since I enable Elasticsearch HA, How to make sure this? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [June 23, 2017, 11:40am UTC](https://discuss.elastic.co/t/elasticsearch-high-availability-ha-functionality-test/87246/8 "2017-06-23T11:40:38Z")
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