# Installing root CA certificate on the nodes and configure logstash

**URL:** <https://discuss.elastic.co/t/installing-root-ca-certificate-on-the-nodes-and-configure-logstash/65395>\
**Category:** Elasticsearch\
**Tags:** elastic-stack-security\
**Created:** [November 8, 2016, 7:41pm UTC](https://discuss.elastic.co/t/installing-root-ca-certificate-on-the-nodes-and-configure-logstash/65395 "2016-11-08T19:41:23Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![stecino](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@stecino](https://discuss.elastic.co/u/stecino)\
**Post date:** [November 8, 2016, 7:41pm UTC](https://discuss.elastic.co/t/installing-root-ca-certificate-on-the-nodes-and-configure-logstash/65395/1 "2016-11-08T19:41:23Z")

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Hello,

I have been reading the [https://www.elastic.co/guide/en/shield/current/ssl-tls.html#install-signed-cert](https://www.elastic.co/guide/en/shield/current/ssl-tls.html#install-signed-cert)  
But I am not sure I understand.

I have a root CA generated where I have defined SAN with all the node names of the cluster. I have taken the crt file and converted into pem. Now, I guess I need to create a keystore, is this going to be common key store, or individual for each node?

I am not sure I follow

Thanks in advance

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**Author:** ![ppisljar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ppisljar/32/11588_2.png) [@ppisljar](https://discuss.elastic.co/u/ppisljar)\
**Post date:** [November 16, 2016, 1:36pm UTC](https://discuss.elastic.co/t/installing-root-ca-certificate-on-the-nodes-and-configure-logstash/65395/2 "2016-11-16T13:36:07Z")

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Sorry for late reply stecino. Which version of ES are you using ?

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**Author:** ![stecino](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@stecino](https://discuss.elastic.co/u/stecino)\
**Post date:** [November 17, 2016, 2:49am UTC](https://discuss.elastic.co/t/installing-root-ca-certificate-on-the-nodes-and-configure-logstash/65395/3 "2016-11-17T02:49:36Z")

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ElasticSearch version is 2.3.5

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<div class="post-metadata">

**Author:** ![ppisljar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ppisljar/32/11588_2.png) [@ppisljar](https://discuss.elastic.co/u/ppisljar)\
**Post date:** [November 17, 2016, 7:50am UTC](https://discuss.elastic.co/t/installing-root-ca-certificate-on-the-nodes-and-configure-logstash/65395/4 "2016-11-17T07:50:33Z")

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it should be one key store per node if i understand correctly.

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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:** [December 15, 2016, 7:51am UTC](https://discuss.elastic.co/t/installing-root-ca-certificate-on-the-nodes-and-configure-logstash/65395/5 "2016-12-15T07:51:31Z")

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