# Conflicts of OS versions

**URL:** <https://discuss.elastic.co/t/conflicts-of-os-versions/101556>\
**Category:** Elasticsearch\
**Created:** [September 23, 2017, 7:23am UTC](https://discuss.elastic.co/t/conflicts-of-os-versions/101556 "2017-09-23T07:23:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Balamurali](https://avatars.discourse-cdn.com/v4/letter/b/90db22/32.png) [@Balamurali](https://discuss.elastic.co/u/Balamurali)\
**Post date:** [September 23, 2017, 7:23am UTC](https://discuss.elastic.co/t/conflicts-of-os-versions/101556/1 "2017-09-23T07:23:51Z")

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HI all,

We are using elasticsearch 1.3.7 cluster , we are working hardly on upgrading es version.  
We are need to add more nodes to cluster for some high performance urgently.  
now all ES nodes are running in centos6.7 version , we are planning to add nodes to cluster in centos7 version.

**Is there is any possibility for issues in cluster due conflicts of OS versions??**

please confirm and help on this.

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<div class="post-metadata">

**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:** [September 23, 2017, 8:26am UTC](https://discuss.elastic.co/t/conflicts-of-os-versions/101556/2 "2017-09-23T08:26:10Z")

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IIRC this version, one super important thing is to have the exact same JVM (Vendor and Version).

Never heard anything regarding the OS itself.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [October 21, 2017, 8:26am UTC](https://discuss.elastic.co/t/conflicts-of-os-versions/101556/3 "2017-10-21T08:26:18Z")

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