Seed node
A seed node is a configured cluster node that provides an initial contact point for joining nodes to discover or establish cluster membership.
Akka in Action, Second Edition
A seed node is a configured cluster node that provides an initial contact point for joining or starting the cluster.
- How it is used
- Establishes initial cluster contact so Akka nodes can form membership and accept later join requests.
- How deep it goes
- Explains configured startup, joining, leadership handoff, and unreachable-node behavior while deferring programmatic seed implementations.
- Examples
- Demonstrates a three-port REPL cluster and a word-counting deployment with seed, director, and aggregator roles.
- What you can do after
- Operate/configure seed-based Akka clusters, start nodes in formation order, and interpret joining, Up, leaving, and unreachable states.
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ScyllaDB in Action
A seed node is an already-running cluster node that provides an initial contact point for a joining node to discover cluster membership.
- How it is used
- Provides the initial contact point for adding nodes to a ScyllaDB cluster.
- How deep it goes
- Explains configuration, discovery, gossip, streaming, and post-join behavior, stopping short of broader cluster-formation theory.
- Examples
- Uses Docker startup commands, scylla.yaml seed_provider settings, and nodetool status during node joining.
- What you can do after
- Operate/configure a joining ScyllaDB node with a valid seed and verify its transition into the cluster.
Related concepts
- akka-management-cluster-bootstrapaddressed by · akka-management-cluster-bootstrap is an Akka library module that provides Cluster Bootstrap functionality and its associated dependencies.
- Clusterpart of · Cluster is the Akka Typed API component that provides access to cluster state, management, and event subscriptions.
- configurationconfigured by · A specification of settings, parameters, or component relationships that determines how a system, application, model, or process is structured or operates.
- cluster topologyproduces · Cluster topology is the arrangement, connectivity, roles, and partition relationships of nodes within a computing cluster.
- cluster nodekind of · A cluster node is an individual physical or virtual machine that participates in a distributed cluster and provides computing resources or services.
- seeds argumentconfigured by · A seeds argument is a node configuration setting that specifies seed nodes for initial cluster discovery.
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