# Upgrading **URL:** \ **Category:** Elasticsearch\ **Created:** [September 18, 2013, 7:12pm UTC](https://discuss.elastic.co/t/upgrading/13679 "2013-09-18T19:12:29Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![nik9000](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/nik9000/32/44947_2.png) [@nik9000](https://discuss.elastic.co/u/nik9000)\ **Post date:** [September 18, 2013, 7:12pm UTC](https://discuss.elastic.co/t/upgrading/13679/1 "2013-09-18T19:12:29Z")
I have a question about upgrading: should you turn off shard reallocation before shutting down each server? I was reading somewhere (but can't find where) that shutting down a node in the cluster reassigns all the shards immediately and then bringing the node back up causes another flurry of reassignments. This is the behaviour I see. If I turn off shard reallocation before shutting down the server, upgrade, restart, then turn on shard reallocation, then I see the shards basically snap back to their old server and the whole process seems to proceed much more quickly. So, is this how I should do a rolling upgrade? If so, should I work on building such a thing into the deb package, shutdown api, or something else? Nik -- 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). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![mvg](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mvg/32/98890_2.png) [@mvg](https://discuss.elastic.co/u/mvg)\ **Post date:** [September 20, 2013, 8:34am UTC](https://discuss.elastic.co/t/upgrading/13679/2 "2013-09-20T08:34:55Z")
During an upgrade I would also disable automatic shard allocation during an upgrade in order to prevent behaviour that you're describing. I don't know much about deb packages, but if that automates that process (disable before upgrade and enable after) I think that would be a good idea. On 18 September 2013 21:12, Nikolas Everett [nik9000@gmail.com](mailto:nik9000@gmail.com) wrote: > I have a question about upgrading: should you turn off shard reallocation > before shutting down each server? > > I was reading somewhere (but can't find where) that shutting down a node > in the cluster reassigns all the shards immediately and then bringing the > node back up causes another flurry of reassignments. This is the behaviour > I see. > > If I turn off shard reallocation before shutting down the server, upgrade, > restart, then turn on shard reallocation, then I see the shards basically > snap back to their old server and the whole process seems to proceed much > more quickly. > > So, is this how I should do a rolling upgrade? If so, should I work on > building such a thing into the deb package, shutdown api, or something else? > > Nik > > -- > 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). > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- Met vriendelijke groet, Martijn van Groningen -- 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). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**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, 2:15am UTC](https://discuss.elastic.co/t/upgrading/13679/3 "2017-07-06T02:15:23Z")