Node role
A node role is a functional or structural responsibility assigned to a node within a distributed system or network.
Elasticsearch in Action, Second Edition
A node role is a configured responsibility assigned to an Elasticsearch node, such as eligibility for master election.
- How it is used
- Organizes cluster responsibilities across nodes for management, document operations, ingestion, transformations, machine learning, and request coordination.
- How deep it goes
- Explains role responsibilities and node.roles configuration, while deferring multi-tier data-role details.
- Examples
- Uses a node.roles YAML array and a single-node chats index that gains nodes to reduce replica and performance risks.
- What you can do after
- Operate/configure nodes by setting node.roles to assign selected cluster responsibilities.
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Graph Algorithms for Data Science
A node role is the functional or structural part a node plays within a graph or network.
- How it is used
- Uses node roles to analyze graph structure, information flow, and predictive machine-learning features.
- How deep it goes
- Explains roles through homophily and structural-role embeddings, but defers detailed algorithm mechanics.
- Examples
- Uses bridge nodes, social-platform users, researchers, and internet routers as role examples.
- What you can do after
- Understand how structural positions can guide graph interpretation, embedding design, and downstream prediction.
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Related concepts
- node labelused by · A node label is a categorical marker assigned to a graph node to identify its type, role, or semantic class.
- node.rolesconfigured by · node.roles is an Elasticsearch configuration setting containing the list of roles assigned to a node.
- master-eligible nodeconfigures · A master-eligible node is an Elasticsearch node assigned the master role and therefore able to vote in master elections and become the elected master.
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