# Cluster upgrade? **URL:** \ **Category:** Elasticsearch\ **Created:** [October 12, 2012, 5:25pm UTC](https://discuss.elastic.co/t/cluster-upgrade/9340 "2012-10-12T17:25:00Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Jerome\_Gagnon](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jerome_gagnon/32/2178_2.png) [@Jerome\_Gagnon](https://discuss.elastic.co/u/Jerome_Gagnon)\ **Post date:** [October 12, 2012, 5:25pm UTC](https://discuss.elastic.co/t/cluster-upgrade/9340/1 "2012-10-12T17:25:00Z")
Hi everyone, I was just wondering how you guys proceed to upgrade ElasticSearch versions ? I'm thinking about having 2 identical clusters and upgrading one at a time to avoid downtime... since the protocol is binary you can't really just stop 1 node at a time and restart it, i'm I right ? i just wanted to know how to do it, I saw a method somewhere involving firewall and things like that, but I don't want to go there yet. I want to have 0 downtime as you may have guessed 馃檪 Greetings, Jerome Gagnon -- ---
**Author:** ![ppearcy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ppearcy/32/980_2.png) [@ppearcy](https://discuss.elastic.co/u/ppearcy)\ **Post date:** [October 12, 2012, 8:25pm UTC](https://discuss.elastic.co/t/cluster-upgrade/9340/2 "2012-10-12T20:25:00Z")
This really depends on how much data you're dealing with and if it can all fit onto a single node. To summarize my setup: - Have ~400GB of data - 3 production clusters, 4 nodes each (each nodes w/ 1.2TB of disk), each cluster in different DC So, all my data can fit on a single node, which helps. There are two methods we use. The easier way is to move traffic from one of the DCs and restart the cluster. Not everyone has this option, but it is really the easiest way to go. You can typically get things back into a yellow state in under a minute, so the downtime is quite minimal. The other way allows us to keep things up... but we still move traffic from the DC during some steps because of performance degradation when shards move around. Anyways this method is: - Remove a node from the cluster - Install new s/w there and ensure it isn't getting any search traffic - Rebuild our data to the new single node cluster. We rebuild from our primary datastore using some inhouse software that replicates any updates/adds/deletes to both. - Move nodes from old to new cluster - We'll often leave one node running the old cluster for a short period to allow us to roll back if necessary. So, a lot of this is depends on how you're ingesting data into your cluster and if all your data can fit on a subset of nodes. Hope this helps, Paul On Friday, October 12, 2012 11:25:00 AM UTC-6, J茅r么me Gagnon wrote: > Hi everyone, > > I was just wondering how you guys proceed to upgrade Elasticsearch > versions ? I'm thinking about having 2 identical clusters and upgrading one > at a time to avoid downtime... since the protocol is binary you can't > really just stop 1 node at a time and restart it, i'm I right ? i just > wanted to know how to do it, I saw a method somewhere involving firewall > and things like that, but I don't want to go there yet. I want to have 0 > downtime as you may have guessed 馃檪 > > Greetings, > > Jerome Gagnon -- ---
**Author:** ![Tanguy1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tanguy1/32/1749_2.png) [@Tanguy1](https://discuss.elastic.co/u/Tanguy1)\ **Post date:** [October 15, 2012, 8:16am UTC](https://discuss.elastic.co/t/cluster-upgrade/9340/3 "2012-10-15T08:16:32Z")
Hi Jerome, Clinton wrote a nice article on how he proceed to upgrade an Es cluster: [https://groups.google.com/d/topic/elasticsearch/aB8GbaYIuqE/discussion](https://groups.google.com/d/topic/elasticsearch/aB8GbaYIuqE/discussion) > -- Tanguy Twitter: @tlrx > **[tlrx - Overview](https://github.com/tlrx)** > > tlrx has 23 repositories available. Follow their code on GitHub. Le vendredi 12 octobre 2012 19:25:00 UTC+2, J茅r么me Gagnon a 茅crit : > Hi everyone, > > I was just wondering how you guys proceed to upgrade Elasticsearch > versions ? I'm thinking about having 2 identical clusters and upgrading one > at a time to avoid downtime... since the protocol is binary you can't > really just stop 1 node at a time and restart it, i'm I right ? i just > wanted to know how to do it, I saw a method somewhere involving firewall > and things like that, but I don't want to go there yet. I want to have 0 > downtime as you may have guessed 馃檪 > > Greetings, > > Jerome Gagnon -- ---
**Author:** ![Jerome\_Gagnon](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jerome_gagnon/32/2178_2.png) [@Jerome\_Gagnon](https://discuss.elastic.co/u/Jerome_Gagnon)\ **Post date:** [October 15, 2012, 12:40pm UTC](https://discuss.elastic.co/t/cluster-upgrade/9340/4 "2012-10-15T12:40:15Z")
Yes, I saw that, so that was basically my point, since all of my data cannot fit in one node, I will need 2 mirror clusters to complete the process On Monday, October 15, 2012 4:16:32 AM UTC-4, Tanguy wrote: > Hi Jerome, > > Clinton wrote a nice article on how he proceed to upgrade an Es cluster: > > [https://groups.google.com/d/topic/elasticsearch/aB8GbaYIuqE/discussion](https://groups.google.com/d/topic/elasticsearch/aB8GbaYIuqE/discussion) > [Upgrading a running elasticsearch cluster 路 GitHub](https://gist.github.com/3888120) > > -- Tanguy > Twitter: @tlrx > [tlrx (Tanguy Leroux) 路 GitHub](https://github.com/tlrx) > > Le vendredi 12 octobre 2012 19:25:00 UTC+2, J茅r么me Gagnon a 茅crit : > > > Hi everyone, > > > > I was just wondering how you guys proceed to upgrade Elasticsearch > > versions ? I'm thinking about having 2 identical clusters and upgrading one > > at a time to avoid downtime... since the protocol is binary you can't > > really just stop 1 node at a time and restart it, i'm I right ? i just > > wanted to know how to do it, I saw a method somewhere involving firewall > > and things like that, but I don't want to go there yet. I want to have 0 > > downtime as you may have guessed 馃檪 > > > > Greetings, > > > > Jerome Gagnon -- ---
**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, 3:08am UTC](https://discuss.elastic.co/t/cluster-upgrade/9340/5 "2017-07-06T03:08:48Z")