# Dedicated master nodes: JVM usage

**URL:** <https://discuss.elastic.co/t/dedicated-master-nodes-jvm-usage/237000>\
**Category:** Elasticsearch\
**Created:** [June 13, 2020, 11:18pm UTC](https://discuss.elastic.co/t/dedicated-master-nodes-jvm-usage/237000 "2020-06-13T23:18:35Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![smlbiobot](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/smlbiobot/32/29622_2.png) [@smlbiobot](https://discuss.elastic.co/u/smlbiobot)\
**Post date:** [June 13, 2020, 11:18pm UTC](https://discuss.elastic.co/t/dedicated-master-nodes-jvm-usage/237000/1 "2020-06-13T23:18:35Z")

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We have 3 dedicated master nodes in the cluster, and I have noticed from ES monitoring that their JVM does get used, even though only one master is active at any time. Do the inactive master nodes perform tasks? I’ve assumed that the master-eligible nodes are just there for fault tolerance but it appears that they do contribute to something?

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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:** [July 11, 2020, 11:18pm UTC](https://discuss.elastic.co/t/dedicated-master-nodes-jvm-usage/237000/2 "2020-07-11T23:18:49Z")

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Closed on July 11, 2020, 11:18pm UTC

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