# OS level changes for elasticsearch **URL:** \ **Category:** Elasticsearch\ **Created:** [June 20, 2017, 10:22am UTC](https://discuss.elastic.co/t/os-level-changes-for-elasticsearch/90076 "2017-06-20T10:22:52Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![mruthyu](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@mruthyu](https://discuss.elastic.co/u/mruthyu)\ **Post date:** [June 20, 2017, 10:22am UTC](https://discuss.elastic.co/t/os-level-changes-for-elasticsearch/90076/1 "2017-06-20T10:22:53Z")
Whether only in the data nodes (cluster environment with master nodes, co-coordinating nodes..etc) the changes for file descriptors , virtual memory..etc needs to be done? Files to be updated. /etc/sysctl.conf /etc/security/limits.conf ---
**Author:** ![jpountz](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jpountz/32/45836_2.png) [@jpountz](https://discuss.elastic.co/u/jpountz)\ **Post date:** [June 20, 2017, 2:31pm UTC](https://discuss.elastic.co/t/os-level-changes-for-elasticsearch/90076/2 "2017-06-20T14:31:10Z")
Even though this is mostly needed for data nodes, you'll have to do this on all nodes. Otherwise the bootstrap checks will still complain. ---
**Author:** ![mruthyu](https://avatars.discourse-cdn.com/v4/letter/m/bb73d2/32.png) [@mruthyu](https://discuss.elastic.co/u/mruthyu)\ **Post date:** [July 11, 2017, 4:41am UTC](https://discuss.elastic.co/t/os-level-changes-for-elasticsearch/90076/3 "2017-07-11T04:41:08Z")
Sure. Thanks. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [August 8, 2017, 4:41am UTC](https://discuss.elastic.co/t/os-level-changes-for-elasticsearch/90076/4 "2017-08-08T04:41:25Z")
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