mc event add

Syntax

The mc event add command adds event notification triggers to a bucket.

MinIO automatically sends triggered events to the configured notification target.

The following command creates a new event notification trigger for all PUT and DELETE operations for the mydata bucket on the myminio MinIO deployment:

mc event add --event "put,delete" myminio/mydata arn:aws:sqs::primary:target

The specified ARN corresponds to a configured bucket notification target on the myminio deployment.

The command has the following syntax:

mc [GLOBALFLAGS] event add \
                 [--event "string"]  \
                 [--ignore-existing] \
                 [--prefix "string"] \
                 [--suffix "string"] \
                 ALIAS               \
                 ARN

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.

Parameters

`ALIAS`

mc-cmd

Required

The MinIO alias and bucket to which the command adds the new event notification. For example:

mc event add play/mybucket

`ARN`

mc-cmd

Required

The Amazon Resource Name (ARN) of the notification target.

The MinIO server outputs an ARN for each configured notification target at server startup. See Bucket Notifications for more information.

`--event`

mc-cmd

Optional

The event(s) for which MinIO generates bucket notifications.

Supports the following values:

put
get
delete

Specify multiple value using a comma , delimiter. Do not add any whitespace between values.

If not specified, defaults to put,delete,get.

See Supported Bucket Events for a detailed list of S3 events associated to each of the supported values.

`ignore-existing, p`

mc-cmd

Optional

Directs MinIO to ignore the specified event triggers if a matching trigger already exists.

`--prefix`

mc-cmd

Optional

The bucket prefix in which the specified --event can trigger a bucket notification.

For example, given a ALIAS of play/mybucket and a --prefix of photos, only events in play/mybucket/photos trigger bucket notifications.

Omit to trigger the event for all prefixes and objects in the bucket.

`--suffix`

mc-cmd

Optional

The bucket suffix in which the specified --event can trigger a bucket notification.

For example, given a ALIAS of play/mybucket and a --suffix of .jpg, only events in play/mybucket/*.jpg trigger bucket notifications.

Omit to trigger the event for all objects regardless of suffix.

Global Flags

This command supports any of the global flags.

Examples

Add an Event Notification to a Bucket

The following command adds a new event notification trigger for all S3 PUT, GET, and DELETE operations on a bucket. The command assumes the MinIO deployment has at least one configured bucket notification target:

mc event add myminio/mydata arn:minio:sqs::primary:webhook

mc event add ALIAS ARN

Replace ALIAS with the alias of the MinIO deployment and the bucket on which to add the bucket notification event. For example:
myminio/mydata
Replace ARN with the notification target ARN.

Behavior

Supported Bucket Events

The following table lists the supported mc event add values and their corresponding S3 events:

Supported Value	Corresponding S3 Events
`put`	`s3:ObjectCreated:CompleteMultipartUpload` `s3:ObjectCreated:Copy` `s3:ObjectCreated:DeleteTagging` `s3:ObjectCreated:Post` `s3:ObjectCreated:Put` `s3:ObjectCreated:PutLegalHold` `s3:ObjectCreated:PutRetention` `s3:ObjectCreated:PutTagging`
`get`	`s3:ObjectAccessed:Head` `s3:ObjectAccessed:Get` `s3:ObjectAccessed:GetRetention` `s3:ObjectAccessed:GetLegalHold`
`delete`	`s3:ObjectRemoved:Delete` `s3:ObjectRemoved:DeleteMarkerCreated`
`replica`	`s3:Replication:OperationCompletedReplication` `s3:Replication:OperationFailedReplication` `s3:Replication:OperationMissedThreshold` `s3:Replication:OperationNotTracked` `s3:Replication:OperationReplicatedAfterThreshold`
`ilm`	`s3:ObjectTransition:Failed` `s3:ObjectTransition:Complete` `s3:ObjectRestore:Post` `s3:ObjectRestore:Completed`
`scanner`	`s3:Scanner:ManyVersions` `s3:Scanner:BigPrefix`

For more complete documentation on the listed S3 events, see S3 Supported Event Types.

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.

Last modified August 2, 2026: init commit (8338d5b)