Elastic Search Notes
  • Introduction
  • Full Text
  • Aggregations
    • Facets Vs Aggregations
  • Filters
  • References
  • Tools
  • Query DSL
    • Query and filter context
      • Query context
      • Filter context
      • Filtered Vs filter
      • termQuery vs. termFilter
    • Term level queries vs full text queries
  • Parent Child Relationship
  • Nodes
    • Master Node
  • Elastic Search Networking
  • Logstash
    • HighAvailability
    • Grok patterns
  • KeyConcepts
    • Shard
    • Segment
    • Translog
  • Document CRUD operations
    • Updates
  • adv topics
  • Relevance
    • BM25 Scoring Formula
  • Named Queries
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  1. Nodes

Master Node

PreviousNodesNextElastic Search Networking

Last updated 5 years ago

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The master node is responsible for lightweight cluster-wide actions such as creating or deleting an index, tracking which nodes are part of the cluster, and deciding which shards to allocate to which nodes. It is important for cluster health to have a stable master node.

Important - While master nodes can also behave as and route search and indexing requests from clients to data nodes, it is better not to use dedicated master nodes for this purpose. It is important for the stability of the cluster that master-eligible nodes do as little work as possible.

https://www.elastic.co/guide/en/elasticsearch/reference/5.4/modules-node.html
coordinating nodes