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Tools

Ozone provides a set of command-line tools that can be used to manage and operate an Ozone cluster.

All commands are invoked via the ozone script.

Daemon commands​

Commands used to start or stop Ozone services.

  • scm – Storage Container Manager service
  • om – Ozone Manager service
  • datanode – HDDS DataNode service
  • s3g – S3-compatible REST gateway
  • recon – Recon Web UI service
  • httpfs – HttpFS gateway

Client commands​

  • sh – Manage volumes, buckets, and keys
  • fs – Ozone filesystem commands (similar to hdfs dfs)
  • version – Print Ozone and HDDS version information

Admin commands​

  • admin – Admin and developer commands for Ozone components
  • daemonlog – Get or set runtime log levels for Ozone daemon loggers
  • insight – Display filtered logs, metrics, or configs for debugging
  • classpath – Print Hadoop classpath
  • dtutil – Delegation token operations
  • envvars – Display computed Hadoop environment variables
  • getconf – Read Ozone configuration values
  • genconf – Generate minimal ozone-site.xml

Test tools​

  • freon – Ozone load generator