Ozone Configurations

Ozone Environment Directories

  • PID - /var/run/hadoop-ozone

  • log - /var/log/hadoop-ozone

  • conf - /etc/hadoop-ozone/conf

  • om conf - /etc/hadoop-ozone/conf/ozone.om

  • lib - /usr/odp/{stack_version}/ozone/share/ozone/lib

  • ozone home - /usr/odp/{stack_version}/ozone

Metadata Directories

Ozone Manager (OM)

Configuration Key

Default Value

Purpose

ozone.om.db.dirs

/var/lib/ozone/om/ozone-metadata

Ozone Manager Metadata directories. This should be specified as a single directory

ozone.om.ratis.storage.dir

/var/lib/ozone/om/ratis

Used for storing OM's Ratis metadata like logs. If undefined, OM ratis storage dir will fallback to ozone.metadata.dirs.

ozone.om.ratis.snapshot.dir

/var/lib/ozone/om-snapshots

Directory to store OM's snapshot related files like the ratisSnapshotIndex and DB checkpoint from leader OM.

Storage Container Manager (SCM)

Configuration Key

Default Value

Purpose

ozone.scm.db.dirs

/var/lib/ozone/scm/data

Directory where the StorageContainerManager stores its metadata. This should be specified as a single directory. If the directory does not exist then the SCM will attempt to create it.

ozone.scm.ha.ratis.storage.dir

/var/lib/ozone/scm/ratis

Storage directory used by SCM to write Ratis logs.

hdds.metadata.dir

/var/lib/ozone/hdds-metadata

Absolute path to HDDS metadata dir. Part of SCM balancer properties.

Datanode (DN)

Configuration Key

Default Value

Purpose

hdds.datanode.dir

/data/hadoop-ozone/datanode/data

Determines where on the local filesystem HDDS data will be stored. Defaults to dfs.datanode.data.dir if not specified.

ozone.metadata.dirs

/var/lib/ozone/services-metadata/dn-metadata

Fallback location for SCM, OM, Recon and DataNodes to store their metadata. In ODP ozone, used only for datanode metadata.

dfs.container.ratis.datanode.storage.dir

/var/lib/ozone/datanode/ratis/data

Ozone Datanode Ratis Data Directory, to store metadata like logs

ozone.scm.datanode.id.dir

/var/lib/ozone/datanode

The path that datanodes will use to store the datanode ID.

Recon Service

Configuration Key

Default Value

Purpose

ozone.recon.db.dir

/var/lib/ozone/recon/data

Ozone RECON UI data directory. This should be specified as a single directory. If the directory does not exist then the Recon will attempt to create it.

ozone.recon.om.db.dir

/var/lib/ozone/recon/om/data

Directory where the Recon Server stores its OM snapshot DB. This should be specified as a single directory. If the directory does not exist then the Recon will attempt to create it.

ozone.recon.scm.db.dirs

/var/lib/ozone/recon/scm/data

Directory where the Recon Server stores its SCM snapshot DB. This should be specified as a single directory. If the directory does not exist then the Recon will attempt to create it.

Ozone Service Endpoints

To view the list of Ozone service endpoints, see Configuring Ports.

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