# Need help with a large cluster restart **URL:** \ **Category:** Elasticsearch\ **Created:** [February 26, 2014, 12:57am UTC](https://discuss.elastic.co/t/need-help-with-a-large-cluster-restart/16021 "2014-02-26T00:57:19Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![search](https://avatars.discourse-cdn.com/v4/letter/s/dfb087/32.png) [@search](https://discuss.elastic.co/u/search)\ **Post date:** [February 26, 2014, 12:57am UTC](https://discuss.elastic.co/t/need-help-with-a-large-cluster-restart/16021/1 "2014-02-26T00:57:19Z")
I have 20 ES data nodes and 10 master nodes in my cluster. I have 6 minimum master nodes for the cluster to function. I wanted to know if any one knows of a correct way to restart a large cluster. I see different results on each cluster restart. Some times, some of the shards are in Unassigned state and they are stuck in that state. Some times the shards are getting re-allocated. So far, I am always doing a Full Cluster restart. All I want to do is restart and come back to the state where it was before restart. I really appreciate any insight into this or a link to a documentation about the cluster restarts. Thanks. -- 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/e8a0df2c-38a6-47c0-ad7a-113306733e09%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/e8a0df2c-38a6-47c0-ad7a-113306733e09%40googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [February 26, 2014, 3:12am UTC](https://discuss.elastic.co/t/need-help-with-a-large-cluster-restart/16021/2 "2014-02-26T03:12:46Z")
Some of these will help - > **[Managing Elasticsearch Cluster Restart Time](https://gibrown.wordpress.com/2013/12/05/managing-elasticsearch-cluster-restart-time/)** > > While building a fairly large index (8TB total for 500 million docs), I ran into some very long restart times for the cluster. That prompted me to start a discussion about long restart times. There… Regards, Mark Walkom Infrastructure Engineer Campaign Monitor email: [markw@campaignmonitor.com](mailto:markw@campaignmonitor.com) web: [www.campaignmonitor.com](http://www.campaignmonitor.com) On 26 February 2014 11:57, Search User [feedworks@gmail.com](mailto:feedworks@gmail.com) wrote: > I have 20 ES data nodes and 10 master nodes in my cluster. I have 6 > minimum master nodes for the cluster to function. I wanted to know if any > one knows of a correct way to restart a large cluster. I see different > results on each cluster restart. Some times, some of the shards are in > Unassigned state and they are stuck in that state. Some times the shards > are getting re-allocated. So far, I am always doing a Full Cluster restart. > All I want to do is restart and come back to the state where it was before > restart. I really appreciate any insight into this or a link to a > documentation about the cluster restarts. > > Thanks. > > -- > 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/e8a0df2c-38a6-47c0-ad7a-113306733e09%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/e8a0df2c-38a6-47c0-ad7a-113306733e09%40googlegroups.com) > . > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- 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/CAEM624ZdhaHpnkh8E1OmD5gVzfKjac2b5sd0s2tNqHi4mUVYBA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEM624ZdhaHpnkh8E1OmD5gVzfKjac2b5sd0s2tNqHi4mUVYBA%40mail.gmail.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, 1:47am UTC](https://discuss.elastic.co/t/need-help-with-a-large-cluster-restart/16021/3 "2017-07-06T01:47:19Z")
Closed on July 6, 2017, 1:47am UTC