# How 2 node elastic cluster will failover to secondary node if the primary node fails
**URL:** https://discuss.elastic.co/t/how-2-node-elastic-cluster-will-failover-to-secondary-node-if-the-primary-node-fails/285919
**Category:** Elasticsearch
**Created:** [October 5, 2021, 12:49pm UTC](https://discuss.elastic.co/t/how-2-node-elastic-cluster-will-failover-to-secondary-node-if-the-primary-node-fails/285919 "2021-10-05T12:49:12Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Arcadix](https://discuss.elastic.co/u/Arcadix)
#### Post date: [October 5, 2021, 12:49pm UTC](https://discuss.elastic.co/t/how-2-node-elastic-cluster-will-failover-to-secondary-node-if-the-primary-node-fails/285919/1 "2021-10-05T12:49:12Z")
Hi,
We have 1+1 Elasticsearch Clustering setup on windows server.
we need to know which Elastic node URL should call in our application to have a proper Fail over.
if one node is down how the application identify that and switch to other node which is running under the cluster.
configuration as below.
bootstrap.memory\_lock: true
cluster.name: Elasticsearch
discovery.zen.ping.unicast.hosts:
- [AX-APP19.arcadix.com](http://AX-APP19.arcadix.com)
- [AX-APP20.arcadix.com](http://AX-APP20.arcadix.com)
http.port: 9200
network.host: _site_
node.data: true
node.ingest: true
node.master: true
node.max\_local\_storage\_nodes: 1
node.name: AX-APP20
path.data: E:\Elastic\_Data\Data
path.logs: E:\Elastic\_Data\Logs
transport.tcp.port: 9300
Regards
Sateesh TV
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [October 5, 2021, 12:57pm UTC](https://discuss.elastic.co/t/how-2-node-elastic-cluster-will-failover-to-secondary-node-if-the-primary-node-fails/285919/2 "2021-10-05T12:57:46Z")
In order to have a highly available cluster thT can be fully functional if one node is lost you need a minimum of 3 master eligible nodes. Having 2 is not sufficient. Please see [the docs](https://www.elastic.co/guide/en/elasticsearch/reference/7.15/high-availability-cluster-small-clusters.html) for a more in-depth explanation.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 2, 2021, 12:58pm UTC](https://discuss.elastic.co/t/how-2-node-elastic-cluster-will-failover-to-secondary-node-if-the-primary-node-fails/285919/3 "2021-11-02T12:58:28Z")
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