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Documentation

MinIO Object Storage for Linux

mc retention set

Syntax

The mc retention set command configures the Write-Once Read-Many (WORM) locking settings for an object or object(s) in a bucket. You can also set the default object lock settings for a bucket, where all objects without explicit object lock settings inherit the bucket default.

To lock an object under legal hold, use mc legalhold set.

mc retention set requires that the specified bucket has object locking enabled. You can only enable object locking at bucket creation. See mc mb --with-lock for documentation on creating buckets with object locking enabled.

The following command sets a default 30 day GOVERNANCE object lock on the mydata bucket on the myminio MinIO deployment:

mc retention set --default GOVERNANCE "30d" myminio/mydata

The command has the following syntax:

mc [GLOBALFLAGS] retention set                         \
                 [--bypass]                            \
                 [--default]                           \
                 [--recursive]                         \
                 [--rewind "string"]                   \
                 [--versions]                          \
                 [--version-id "string"]*              \
                 MODE                                  \
                 "VALIDITY"                            \
                 ALIAS

  • Brackets [] indicate optional parameters.

  • Parameters sharing a line are mutually dependent.

  • Parameters separated using the pipe | operator are mutually exclusive.

Copy the example to a text editor and modify as-needed before running the command in the terminal/shell.

mc retention set --version-id is mutually exclusive with multiple other parameters. See the reference documentation for more information.

Parameters

MODE
Required

Sets the locking mode for the ALIAS. Specify one of the following supported values:

  • governance

  • compliance

See the AWS S3 documentation on Object Lock Overview for more information on the supported modes.

Requires specifying VALIDITY.

VALIDITY
Required

The duration which objects remain in the specified MODE after creation.

  • For days, specify a string formatted as Nd. For example,

    30d for 30 days after object creation.

  • For years, specify a string formatted as Ny. For example,

    1y for 1 year after object creation.

ALIAS
Required

The full path to the object or objects for which to set object lock configuration. Specify the alias for the MinIO or S3-compatible service and the full path to bucket. For example:

mc retention set play/mybucket/object.txt MODE VALIDITY

  • If the ALIAS specifies a bucket or bucket prefix, include --recursive to apply the object lock settings to the bucket contents.

  • mc retention set by default applies to only the latest object version. Use --version-id or --versions to apply the object lock settings to a specific version or to all versions of the object respectively.

--bypass
Optional

Allows a user with the s3:BypassGovernanceRetention permission to modify the object. Requires the governance retention MODE

--default
Optional

Sets the default object lock settings for the bucket specified to ALIAS using the MODE and VALIDITY. Any objects created in the bucket inherit the default object lock settings unless explicitly overriden using mc retention set.

If specifying --default, mc retention set ignores all other flags.

--recursive, --r
Optional

Recursively applies the object lock settings to all objects in the specified ALIAS path.

Mutually exclusive with --version-id.

--rewind
Optional

Directs mc retention set to operate only on the object version(s) that existed at specified point-in-time.

  • To rewind to a specific date in the past, specify the date as an ISO8601-formatted timestamp. For example: --rewind "2020.03.24T10:00".

  • To rewind a duration in time, specify the duration as a string in #d#hh#mm#ss format. For example: --rewind "1d2hh3mm4ss".

--rewind requires that the specified ALIAS be an S3-compatible service that supports Bucket Versioning. For MinIO deployments, use mc version to enable or disable bucket versioning.

--version-id, --vid
Optional

Directs mc retention set to operate only on the specified object version.

--version-id requires that the specified ALIAS be an S3-compatible service that supports Bucket Versioning. For MinIO deployments, use mc version to enable or disable bucket versioning.

Mutually exclusive with any of the following flags:

--versions
Optional

Directs mc retention set to operate on all object versions that exist in the bucket.

--versions requires that the specified ALIAS be an S3-compatible service that supports Bucket Versioning. For MinIO deployments, use mc version to enable or disable bucket versioning.

Use --versions and --rewind together to apply the retention settings to all object versions that existed at a specific point-in-time.

Global Flags

This command supports any of the global flags.

Examples

Set Default Bucket Retention Settings

Use mc retention set with the --recursive and --default to set the default bucket retention settings.

mc retention set  --recursive --default MODE DURATION ALIAS/PATH

  • Replace MODE with the retention mode to enable. MinIO supports the AWS S3 retention modes governance and compliance.

  • Replace DURATION with the duration which the object lock should remain in effect. For example, to set a retention period of 30 days, specify 30d.

  • Replace ALIAS with the alias of a configured S3-compatible host.

  • Replace PATH with the path to the bucket.

The bucket must have object locking enabled to use this command. You can only enable object locking when creating a bucket. See mc mb --with-lock for more information on creating buckets with object locking enabled.

Set Object Lock Configuration for Versioned Object

Use mc retention set with --version-id to apply the retention settings to a specific object version:

mc retention set --version-id VERSION MODE DURATION ALIAS/PATH

  • Replace VERSION with the version of the object.

  • Replace MODE with the retention mode to enable. MinIO supports the AWS S3 retention modes governance and compliance.

  • Replace DURATION with the duration which the object lock should remain in effect. For example, to set a retention period of 30 days, specify 30d.

  • Replace ALIAS with the alias of a configured S3-compatible host.

  • Replace PATH with the path to the object.

Use mc retention set with --versions to apply the retention settings to a specific object version:

mc retention set --versions  MODE DURATION ALIAS/PATH

  • Replace MODE with the retention mode to enable. MinIO supports the AWS S3 retention modes governance and compliance.

  • Replace DURATION with the duration which the object lock should remain in effect. For example, to set a retention period of 30 days, specify 30d.

  • Replace ALIAS with the alias of a configured S3-compatible host.

  • Replace PATH with the path to the object.

The bucket must have object locking enabled to use this command. You can only enable object locking when creating a bucket. See mc mb --with-lock for more information on creating buckets with object locking enabled.

Behavior

Retention of Object Versions

For buckets with versioning enabled, mc retention set by default operates on the latest version of the target object or object(s). mc retention set includes specific options that when explicitly specified direct the command to operate on either a specific object version or all versions of an object:

To direct mc retention set to operate on a specific version of an object, include the --version-id argument:

To direct mc retention set to operate on all versions of an object, include the --versions argument:

S3 Compatibility

The mc commandline tool is built for compatibility with the AWS S3 API and is tested with MinIO and AWS S3 for expected functionality and behavior.

MinIO provides no guarantees for other S3-compatible services, as their S3 API implementation is unknown and therefore unsupported. While mc commands may work as documented, any such usage is at your own risk.

This work is licensed under a Creative Commons Attribution 4.0 International License. 2020-Present, MinIO, Inc. Creative Commons License