<ul><li>The master node is responsible for lightweight cluster-wide actions such as creating or deleting an index and tracking cluster membership.</li><li>Optimizing the master node is crucial for cluster stability and performance.</li><li>Recommendations include using dedicated master nodes, allocating sufficient resources, configuring heap size, optimizing network communication, managing cluster state, monitoring garbage collection, ensuring high availability, limiting indices and shards, and using monitoring tools.</li><li>Following these best practices will help maintain a stable and robust Elasticsearch cluster.</li></ul>

Optimizing Elasticsearch Master Node for Cluster Stability

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