X-Pack Security for Elasticsearch with Let's Encrypt™ Certificates
Blog post from Elastic
The blog post provides a detailed guide on implementing in-transit encryption for the Elastic Stack using Let's Encrypt certificates and X-Pack Security. It emphasizes the importance of encrypting HTTP transport-level communications to protect against data theft, and introduces Let's Encrypt as a cost-effective Certificate Authority. The guide explains how to obtain and use certificates with Certbot, a tool that facilitates the process through the ACME framework by verifying domain control. It covers the necessary steps for configuring Elasticsearch and Kibana to use SSL/TLS encryption, including setting up file permissions, configuring PEM files, and adjusting Elasticsearch and Kibana configuration files. The post also discusses the need to regularly renew Let's Encrypt's short-lived certificates and offers additional tips for managing multi-node clusters. Finally, it mentions the use of dm-crypt for encryption at rest, though this aspect is not covered in detail.
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