# Elastic request timeout after disconnecting half cluster

**URL:** <https://discuss.elastic.co/t/elastic-request-timeout-after-disconnecting-half-cluster/216418>\
**Category:** Elasticsearch\
**Created:** [January 24, 2020, 12:46pm UTC](https://discuss.elastic.co/t/elastic-request-timeout-after-disconnecting-half-cluster/216418 "2020-01-24T12:46:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![d4nnyx](https://avatars.discourse-cdn.com/v4/letter/d/e99b99/32.png) [@d4nnyx](https://discuss.elastic.co/u/d4nnyx)\
**Post date:** [January 24, 2020, 12:46pm UTC](https://discuss.elastic.co/t/elastic-request-timeout-after-disconnecting-half-cluster/216418/1 "2020-01-24T12:46:57Z")

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Hello guys,

I have 16 data nodes in Elastic Stack cluster divided to 2 datacenters, all indices have one replica (2 copies in each DC). If I disconnect all nodes from one DC, Elastic is unavailable for a while, Kibana cannot reach it for a few minutes (screenshot incl.).

Elasticsearch conf:  
cluster.name: "es-prod"

> node.name: "xxx-elastic-master-01.xxx.xx"  
> path.data: "/var/lib/elasticsearch"  
> path.logs: "/var/log/elasticsearch"  
> network.host: 0.0.0.0  
> http.port: 9200  
> transport.tcp.port: 9300  
> node.attr.datacenter: dc1  
> node.attr.region: default  
> node.master: false  
> node.data: true  
> node.ingest: false  
> cluster.routing.allocation.awareness.attributes: datacenter,region  
> discovery.zen.ping.unicast.hosts: [master-01, master-02, master-03]  
> discovery.zen.minimum\_master\_nodes: 2  
> xpack.monitoring.enabled: true  
> xpack.monitoring.elasticsearch.collection.enabled: true  
> xpack.monitoring.collection.enabled: true

Kibana is connected to two coordinates nodes (each in one DC).

Kibana

 ![Snímek obrazovky 2020-01-24 v 13.14.08](https://us1.discourse-cdn.com/elastic/original/3X/e/2/e2b5455be80b18d146c567239d163b482f064d37.png)

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 21, 2020, 12:46pm UTC](https://discuss.elastic.co/t/elastic-request-timeout-after-disconnecting-half-cluster/216418/2 "2020-02-21T12:46:58Z")

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