Celeborn Appendix

Environment Variables

VariableDescription
CELEBORN_HOMECeleborn installation root directory
CELEBORN_CONF_DIRConfiguration files directory
CELEBORN_LOG_DIRLog output directory
CELEBORN_PID_DIRPID file directory
CELEBORN_MASTER_MEMORYMaster JVM heap size (e.g., 4g)
CELEBORN_WORKER_MEMORYWorker JVM heap size (e.g., 2g)
CELEBORN_WORKER_OFFHEAP_MEMORYWorker direct (off-heap) memory (e.g., 8g)

Default Ports Summary

PortServiceNotes
9097Master RPCClient and Worker registration/communication
9098Master HTTPWeb UI, REST API, Prometheus metrics
9872Ratis (HA)Master-to-Master Raft consensus traffic
9094Worker RPCClient data push and fetch
9096Worker HTTPWorker Web UI and Prometheus metrics
19097Master InternalUsed when authentication (celeborn.auth.enabled=true)
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  Last updated on Apr 23, 2026
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