# Unable to start Elasticsearch

**URL:** <https://discuss.elastic.co/t/unable-to-start-elasticsearch/251816>\
**Category:** Elasticsearch\
**Created:** [October 12, 2020, 9:36pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch/251816 "2020-10-12T21:36:35Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![prabhukiran](https://avatars.discourse-cdn.com/v4/letter/p/3d9bf3/32.png) [@prabhukiran](https://discuss.elastic.co/u/prabhukiran)\
**Post date:** [October 12, 2020, 9:36pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch/251816/1 "2020-10-12T21:36:36Z")

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I've installed Elasticsearch on a clean, new, updated build of CentOS (7.7.1908). This installation is in support of a Wazuh installation using instructions found here:  
[https://documentation.wazuh.com/3.10/installation-guide/installing-elastic-stack/elastic\_server\_rpm.html](https://documentation.wazuh.com/3.10/installation-guide/installing-elastic-stack/elastic_server_rpm.html)  
When I get through the installation process and I'm on step 4. Enable and Start the Elasticsearch Service, the service errors out with very little additional information. Something like service exited with an error. The screenshot attached below;

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/8/d/8d1c8170ca003b94750929f5c1bf2c43980cb87a.png)

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**Author:** ![AClerk](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aclerk/32/55297_2.png) [@AClerk](https://discuss.elastic.co/u/AClerk)\
**Post date:** [October 12, 2020, 11:21pm UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch/251816/2 "2020-10-12T23:21:38Z")

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Copy and paste the error stack.  
Your screenshot is cut

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<div class="post-metadata">

**Author:** ![Steve\_Mushero](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/steve_mushero/32/22441_2.png) [@Steve\_Mushero](https://discuss.elastic.co/u/Steve_Mushero)\
**Post date:** [October 13, 2020, 8:18am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch/251816/3 "2020-10-13T08:18:01Z")

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Also any logs you can find from systemd or /var/log/elasticsearch, and ideally your /etc/elasticsearch.yml file, also, as problems usually are there. How much RAM and did you set JVM size?

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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:** [November 10, 2020, 8:18am UTC](https://discuss.elastic.co/t/unable-to-start-elasticsearch/251816/4 "2020-11-10T08:18:30Z")

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