# Question on adding new node to ES cluster **URL:** \ **Category:** Elasticsearch\ **Created:** [June 24, 2014, 4:49pm UTC](https://discuss.elastic.co/t/question-on-adding-new-node-to-es-cluster/18301 "2014-06-24T16:49:21Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![karthik426](https://avatars.discourse-cdn.com/v4/letter/k/edb3f5/32.png) [@karthik426](https://discuss.elastic.co/u/karthik426)\ **Post date:** [June 24, 2014, 4:49pm UTC](https://discuss.elastic.co/t/question-on-adding-new-node-to-es-cluster/18301/1 "2014-06-24T16:49:21Z")
Hi, I am trying to understand the process of adding a new node to an existing ES cluster. Specifically I wanted to understand during the shard allocation that happens as a part of adding a new node, will the cluster overall be available for serving new requests - specifically search requests ? Or can we expect any performance impacts during the same ? Thanks, Karthik -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/3051fa60-4b93-4b22-9c8e-83cc6aa3afd7%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/3051fa60-4b93-4b22-9c8e-83cc6aa3afd7%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [June 24, 2014, 7:49pm UTC](https://discuss.elastic.co/t/question-on-adding-new-node-to-es-cluster/18301/2 "2014-06-24T19:49:53Z")
Elasticsearch will be able to serve all your requests during that time. You will probably see some IO increasing but IIRC it will be bounded to 20 mb/s by default. HTH -- David 😉 Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs > Le 24 juin 2014 à 18:49, karthik jayanthi [karthikjayanthi.iitm@gmail.com](mailto:karthikjayanthi.iitm@gmail.com) a écrit : > > Hi, > > I am trying to understand the process of adding a new node to an existing ES cluster. Specifically I wanted to understand during the shard allocation that happens as a part of adding a new node, will the cluster overall be available for serving new requests - specifically search requests ? Or can we expect any performance impacts during the same ? > > ## Thanks, Karthik > > You received this message because you are subscribed to the Google Groups "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/3051fa60-4b93-4b22-9c8e-83cc6aa3afd7%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/3051fa60-4b93-4b22-9c8e-83cc6aa3afd7%40googlegroups.com). > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/7C7C1AE7-89FF-4E25-9B62-70D7EE4D2E70%40pilato.fr](https://groups.google.com/d/msgid/elasticsearch/7C7C1AE7-89FF-4E25-9B62-70D7EE4D2E70%40pilato.fr). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![karthik426](https://avatars.discourse-cdn.com/v4/letter/k/edb3f5/32.png) [@karthik426](https://discuss.elastic.co/u/karthik426)\ **Post date:** [June 25, 2014, 7:43am UTC](https://discuss.elastic.co/t/question-on-adding-new-node-to-es-cluster/18301/3 "2014-06-25T07:43:47Z")
Thanks for the response. Thanks, Karthik On Wed, Jun 25, 2014 at 1:19 AM, David Pilato [david@pilato.fr](mailto:david@pilato.fr) wrote: > Elasticsearch will be able to serve all your requests during that time. > > You will probably see some IO increasing but IIRC it will be bounded to 20 > mb/s by default. > > HTH > > -- > David 😉 > Twitter : @dadoonet / @elasticsearchfr / @scrutmydocs > > Le 24 juin 2014 à 18:49, karthik jayanthi [karthikjayanthi.iitm@gmail.com](mailto:karthikjayanthi.iitm@gmail.com) > a écrit : > > Hi, > > I am trying to understand the process of adding a new node to an existing > ES cluster. Specifically I wanted to understand during the shard allocation > that happens as a part of adding a new node, will the cluster overall be > available for serving new requests - specifically search requests ? Or can > we expect any performance impacts during the same ? > > Thanks, > Karthik > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/3051fa60-4b93-4b22-9c8e-83cc6aa3afd7%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/3051fa60-4b93-4b22-9c8e-83cc6aa3afd7%40googlegroups.com) > [https://groups.google.com/d/msgid/elasticsearch/3051fa60-4b93-4b22-9c8e-83cc6aa3afd7%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/3051fa60-4b93-4b22-9c8e-83cc6aa3afd7%40googlegroups.com?utm_medium=email&utm_source=footer) > . > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). > > -- > You received this message because you are subscribed to a topic in the > Google Groups "elasticsearch" group. > To unsubscribe from this topic, visit > [https://groups.google.com/d/topic/elasticsearch/mYmAhMqUiM0/unsubscribe](https://groups.google.com/d/topic/elasticsearch/mYmAhMqUiM0/unsubscribe). > To unsubscribe from this group and all its topics, send an email to > [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/7C7C1AE7-89FF-4E25-9B62-70D7EE4D2E70%40pilato.fr](https://groups.google.com/d/msgid/elasticsearch/7C7C1AE7-89FF-4E25-9B62-70D7EE4D2E70%40pilato.fr) > [https://groups.google.com/d/msgid/elasticsearch/7C7C1AE7-89FF-4E25-9B62-70D7EE4D2E70%40pilato.fr?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/7C7C1AE7-89FF-4E25-9B62-70D7EE4D2E70%40pilato.fr?utm_medium=email&utm_source=footer) > . > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- Sarve Jana Sukhino Bhavanthu Karthik Jayanthi -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAD7PaHwEzwZNiijPSvEDm\_MwUJC3-zDk7d83%3DdrkO80sro-kQw%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAD7PaHwEzwZNiijPSvEDm_MwUJC3-zDk7d83%3DdrkO80sro-kQw%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 1:19am UTC](https://discuss.elastic.co/t/question-on-adding-new-node-to-es-cluster/18301/4 "2017-07-06T01:19:57Z")