Enhance stability with dedicated cluster manager nodes using Amazon OpenSearch Service

The article discusses the benefits of using dedicated cluster manager nodes in Amazon OpenSearch Service to enhance cluster stability and performance.

• Dedicated cluster manager nodes handle cluster management tasks without competing with data operations
• Recommended to use three dedicated cluster manager nodes for production environments
• Provides protection against split-brain situations and improves cluster reliability
• Multi-AZ with standby feature requires three dedicated cluster manager nodes
• Five nodes are possible but less cost-effective since only one is active at a time

Key recommendations include monitoring CPU utilization and JVM memory pressure, and selecting smaller instance types for cluster manager nodes. The approach is particularly valuable for mission-critical production workloads.