# Cluster is not running and master is not discovered

**URL:** <https://discuss.elastic.co/t/cluster-is-not-running-and-master-is-not-discovered/199695>\
**Category:** Elasticsearch\
**Created:** [September 16, 2019, 3:57pm UTC](https://discuss.elastic.co/t/cluster-is-not-running-and-master-is-not-discovered/199695 "2019-09-16T15:57:51Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [September 16, 2019, 6:45pm UTC](https://discuss.elastic.co/t/cluster-is-not-running-and-master-is-not-discovered/199695/4 "2019-09-16T18:45:34Z")

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Did any firewall rules change?

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_[View the full topic](https://discuss.elastic.co/t/cluster-is-not-running-and-master-is-not-discovered/199695)._