This simple Druid cluster configuration can be used for initially experimenting with Druid on your local machine. For a more realistic production Druid cluster, see Production Cluster Configuration.
Run:
io.druid.cli.Main server overlord
Configuration:
-server -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 -Ddruid.host=localhost -Ddruid.port=8080 -Ddruid.service=overlord -Ddruid.zk.service.host=localhost -Ddruid.extensions.coordinates=["io.druid.extensions:druid-kafka-seven:0.6.172"] -Ddruid.db.connector.connectURI=jdbc:mysql://localhost:3306/druid -Ddruid.db.connector.user=druid -Ddruid.db.connector.password=diurd -Ddruid.selectors.indexing.serviceName=overlord -Ddruid.indexer.queue.startDelay=PT0M -Ddruid.indexer.runner.javaOpts="-server -Xmx1g" -Ddruid.indexer.runner.startPort=8088 -Ddruid.indexer.fork.property.druid.processing.numThreads=1 -Ddruid.indexer.fork.property.druid.computation.buffer.size=100000000
This runs the indexing service in local mode, and can support real-time ingestion tasks (with one processing thread for queries).
Run:
io.druid.cli.Main server coordinator
Configuration:
-server -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 druid.host=localhost druid.service=coordinator druid.port=8082 druid.zk.service.host=localhost druid.db.connector.connectURI=jdbc\:mysql\://localhost\:3306/druid druid.db.connector.user=druid druid.db.connector.password=diurd druid.coordinator.startDelay=PT70s
This simple coordinator assumes local deep storage.
Run:
io.druid.cli.Main server historical
Configuration:
-server -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 druid.host=localhost druid.service=historical druid.port=8083 druid.zk.service.host=localhost druid.server.maxSize=10000000000 druid.processing.buffer.sizeBytes=100000000 druid.processing.numThreads=1 druid.segmentCache.locations=[{"path": "/tmp/druid/indexCache", "maxSize"\: 10000000000}]
This historical node will be able to load 100 MB of data and be able to process 1 segment at a time. Deep storage is assumed to be local storage here.
Run:
io.druid.cli.Main server broker
Configuration:
-server -Xmx256m -Duser.timezone=UTC -Dfile.encoding=UTF-8 druid.host=localhost druid.service=broker druid.port=8084 druid.zk.service.host=localhost druid.processing.buffer.sizeBytes=100000000 druid.processing.numThreads=1
This simple broker will run groupBys in a single thread.