Security in Elasticsearch refers to the measures taken to ensure that Elasticsearch clusters and the data they contain are protected from unauthorized access, tampering, and other security threats. Elasticsearch provides several security features to help protect clusters, including:
1. Authentication: Elasticsearch supports authentication using various mechanisms such as username/password, Kerberos, and LDAP. This ensures that only authorized users can access the Elasticsearch cluster.
2. Authorization: Elasticsearch provides role-based access control (RBAC) to control access to specific actions within the cluster, such as indexing, searching, and managing indices.
3. Encryption: Elasticsearch supports SSL/TLS encryption to ensure that network traffic between clients and the cluster is encrypted and secure.
4. Auditing: Elasticsearch provides auditing features to track user actions and system events within the cluster. This can help detect and investigate security incidents.
5. Integration with external security systems: Elasticsearch can integrate with external systems such as X-Pack Security, SAML, and Apache Ranger to provide additional security features such as single sign-on (SSO) and centralized management of user access.
Overall, security is an important aspect of Elasticsearch management, and Elasticsearch provides several features to help protect clusters and data from security threats.