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Ravind Kumar
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.. _minio-bucket-notifications-publish-elasticsearch:
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===============================
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Publish Events to Elasticsearch
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===============================
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.. default-domain:: minio
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.. |ARN| replace:: ``arn:minio:sqs::primary:elasticsearch``
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.. contents:: Table of Contents
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:local:
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:depth: 1
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MinIO supports publishing :ref:`bucket notification
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<minio-bucket-notifications>` events to an
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`Elasticsearch <https://www.elastic.co/>`__ service endpoint.
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MinIO relies on the :github:`olivere/elastic` v7 project for Elastic
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connectivity. The ``elastic/v7`` library specifically targets Elasticsearch
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v7.0 and is *not compatible with earlier Elasticsearch versions*.
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Add a Elasticsearch Endpoint to a MinIO Deployment
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--------------------------------------------------
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The following procedure adds a new Elasticsearch service endpoint for supporting
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:ref:`bucket notifications <minio-bucket-notifications>` in a MinIO
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deployment.
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Prerequisites
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~~~~~~~~~~~~~
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Elasticsearch v7.0 and later
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++++++++++++++++++++++++++++
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MinIO relies on the :github:`olivere/elastic` v7 project for Elastic
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connectivity. The ``elastic/v7`` library specifically targets Elasticsearch
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v7.0 and is *not compatible with earlier Elasticsearch versions*.
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MinIO ``mc`` Command Line Tool
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++++++++++++++++++++++++++++++
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This procedure uses the :mc:`mc` command line tool for certain actions.
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See the ``mc`` :ref:`Quickstart <mc-install>` for installation instructions.
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1) Add the Elasticsearch Endpoint to MinIO
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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You can configure a new Elasticsearch service endpoint using either environment variables
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*or* by setting runtime configuration settings.
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.. tab-set::
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.. tab-item:: Environment Variables
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MinIO supports specifying the Elasticsearch service endpoint and associated
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configuration settings using
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:ref:`environment variables
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<minio-server-envvar-bucket-notification-elasticsearch>`. The
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:mc:`minio server` process applies the specified settings on its
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next startup.
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The following example code sets *all* environment variables
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related to configuring an Elasticsearch service endpoint. The minimum
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*required* variables are:
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- :envvar:`MINIO_NOTIFY_ELASTICSEARCH_ENABLE`
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- :envvar:`MINIO_NOTIFY_ELASTICSEARCH_URL`
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- :envvar:`MINIO_NOTIFY_ELASTICSEARCH_INDEX`
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- :envvar:`MINIO_NOTIFY_ELASTICSEARCH_FORMAT`
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.. code-block:: shell
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:class: copyable
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set MINIO_NOTIFY_ELASTICSEARCH_ENABLE_<IDENTIFIER>="on"
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set MINIO_NOTIFY_ELASTICSEARCH_URL_<IDENTIFIER>="<ENDPOINT>"
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set MINIO_NOTIFY_ELASTICSEARCH_INDEX_<IDENTIFIER>="<string>"
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set MINIO_NOTIFY_ELASTICSEARCH_FORMAT_<IDENTIFIER>="<string>"
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set MINIO_NOTIFY_ELASTICSEARCH_USERNAME_<IDENTIFIER>="<string>"
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set MINIO_NOTIFY_ELASTICSEARCH_PASSWORD_<IDENTIFIER>="<string>"
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set MINIO_NOTIFY_ELASTICSEARCH_QUEUE_DIR_<IDENTIFIER>="<string>"
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set MINIO_NOTIFY_ELASTICSEARCH_QUEUE_LIMIT_<IDENTIFIER>="<string>"
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set MINIO_NOTIFY_ELASTICSEARCH_COMMENT_<IDENTIFIER>="<string>"
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- Replace ``<IDENTIFIER>`` with a unique descriptive string for the
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TARGET service endpoint. Use the same ``<IDENTIFIER>`` value for all
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environment variables related to the new target service endpoint.
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The following examples assume an identifier of ``PRIMARY``.
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If the specified ``<IDENTIFIER>`` matches an existing Elasticsearch
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service endpoint on the MinIO deployment, the new settings *override*
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any existing settings for that endpoint. Use
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:mc-cmd:`mc admin config get notify_elasticsearch <mc admin config get>`
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to review the currently configured Elasticsearch endpoints on the MinIO
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deployment.
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- Replace ``<ENDPOINT>`` with the URL of the Elasticsearch service endpoint.
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For example:
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See :ref:`Elasticsearch Service for Bucket Notifications
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<minio-server-envvar-bucket-notification-elasticsearch>` for complete
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documentation on each environment variable.
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.. tab-item:: Configuration Settings
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MinIO supports adding or updating Elasticsearch endpoints on a running
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:mc:`minio server` process using the :mc-cmd:`mc admin config set` command
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and the :mc-conf:`notify_elasticsearch` configuration key. You must restart the
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:mc:`minio server` process to apply any new or updated configuration
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settings.
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The following example code sets *all* settings related to configuring an
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Elasticsearch service endpoint. The minimum *required* settings are:
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- :mc-conf:`url <notify_elasticsearch.url>`
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- :mc-conf:`index <notify_elasticsearch.index>`
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- :mc-conf:`format <notify_elasticsearch.format>`
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.. code-block:: shell
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:class: copyable
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mc admin config set ALIAS/ notify_elasticsearch:IDENTIFIER \
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url="ENDPOINT" \
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index="<string>" \
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format="<string>" \
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username="<string>" \
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password="<string>" \
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queue_dir="<string>" \
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queue_limit="<string>" \
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comment="<string>"
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- Replace ``IDENTIFIER`` with a unique descriptive string for the
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Elasticsearch service endpoint. The following examples in this procedure
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assume an identifier of ``PRIMARY``.
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If the specified ``IDENTIFIER`` matches an existing Elasticsearch service
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endpoint on the MinIO deployment, the new settings *override*
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any existing settings for that endpoint. Use
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:mc-cmd:`mc admin config get notify_elasticsearch <mc admin config get>`
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to review the currently configured Elasticsearch endpoints on the MinIO
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deployment.
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- Replace ``ENDPOINT`` with the URL of the Elasticsearch service endpoint.
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For example:
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``https://user:password@hostname:port``
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See :ref:`Elasticsearch Bucket Notification Configuration Settings
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<minio-server-config-bucket-notification-elasticsearch>` for complete
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documentation on each setting.
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2) Restart the MinIO Deployment
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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You must restart the MinIO deployment to apply the configuration changes.
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Use the :mc-cmd:`mc admin service restart` command to restart the deployment.
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.. code-block:: shell
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:class: copyable
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mc admin service restart ALIAS
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Replace ``ALIAS`` with the :ref:`alias <alias>` of the deployment to
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restart.
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The :mc:`minio server` process prints a line on startup for each configured Elasticsearch
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target similar to the following:
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.. code-block:: shell
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SQS ARNs: arn:minio:sqs::primary:elasticsearch
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You must specify the ARN resource when configuring bucket notifications with
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the associated Elasticsearch deployment as a target.
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.. include:: /includes/common-bucket-notifications.rst
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:start-after: start-bucket-notification-find-arn
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:end-before: end-bucket-notification-find-arn
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3) Configure Bucket Notifications using the Elasticsearch Endpoint as a Target
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Use the :mc-cmd:`mc event add` command to add a new bucket notification
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event with the configured Elasticsearch service as a target:
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.. code-block:: shell
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:class: copyable
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mc event add ALIAS/BUCKET arn:minio:sqs::primary:elasticsearch \
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--event EVENTS
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- Replace ``ALIAS`` with the :ref:`alias <alias>` of a MinIO deployment.
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- Replace ``BUCKET`` with the name of the bucket in which to configure the
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event.
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- Replace ``EVENTS`` with a comma-separated list of :ref:`events
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<mc-event-supported-events>` for which MinIO triggers notifications.
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Use :mc-cmd:`mc event list` to view all configured bucket events for
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a given notification target:
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.. code-block:: shell
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:class: copyable
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mc event list ALIAS/BUCKET arn:minio:sqs::primary:elasticsearch
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4) Validate the Configured Events
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Perform an action on the bucket for which you configured the new event and
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check the Elasticsearch service for the notification data. The action required
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depends on which :mc-cmd:`events <mc event add --event>` were specified
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when configuring the bucket notification.
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For example, if the bucket notification configuration includes the
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``s3:ObjectCreated:Put`` event, you can use the
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:mc-cmd:`mc cp` command to create a new object in the bucket and trigger
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a notification.
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.. code-block:: shell
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:class: copyable
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mc cp ~/data/new-object.txt ALIAS/BUCKET
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Update an Elasticsearch Endpoint in a MinIO Deployment
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------------------------------------------------------
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The following procedure updates an existing Elasticsearch service endpoint for supporting
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:ref:`bucket notifications <minio-bucket-notifications>` in a MinIO
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deployment.
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Prerequisites
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~~~~~~~~~~~~~~
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Elasticsearch v7.0 and later
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++++++++++++++++++++++++++++
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MinIO relies on the :github:`olivere/elastic` v7 project for Elastic
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connectivity. The ``elastic/v7`` library specifically targets Elasticsearch
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v7.0 and is *not compatible with earlier Elasticsearch versions*.
|
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MinIO ``mc`` Command Line Tool
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++++++++++++++++++++++++++++++
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This procedure uses the :mc:`mc` command line tool for certain actions.
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See the ``mc`` :ref:`Quickstart <mc-install>` for installation instructions.
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1) List Configured Elasticsearch Endpoints In The Deployment
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Use the :mc-cmd:`mc admin config get` command to list the currently
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configured Elasticsearch service endpoints in the deployment:
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.. code-block:: shell
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:class: copyable
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mc admin config get ALIAS/ notify_elasticsearch
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Replace ``ALIAS`` with the :ref:`alias <alias>` of the MinIO deployment.
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The command output resembles the following:
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.. code-block:: shell
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notify_elasticsearch:primary queue_dir="" queue_limit="0" url="https://user:password@hostname:port" format="namespace" index=""
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notify_elasticsearch:secondary queue_dir="" queue_limit="0" url="https://user:password@hostname:port" format="namespace" index=""
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The :mc-conf:`notify_elasticsearch` key is the top-level configuration key for
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an :ref:`minio-server-config-bucket-notification-elasticsearch`. The
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:mc-conf:`url <notify_elasticsearch.url>` key specifies the Elasticsearch
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service endpoint for the given `notify_elasticsearch` key. The
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``notify_elasticsearch:<IDENTIFIER>`` suffix describes the unique identifier for
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that Elasticsearch service endpoint.
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Note the identifier for the Elasticsearch service endpoint you want to update for
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the next step.
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2) Update the Elasticsearch Endpoint
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Use the :mc-cmd:`mc admin config set` command to set the new configuration
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for the Elasticsearch service endpoint:
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.. code-block:: shell
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:class: copyable
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mc admin config set ALIAS/ notify_elasticsearch:<IDENTIFIER> \
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url="https://user:password@hostname:port" \
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index="<string>" \
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format="<string>" \
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username="<string>" \
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password="<string>" \
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queue_dir="<string>" \
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queue_limit="<string>" \
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comment="<string>"
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The :mc-conf:`notify_elasticsearch url <notify_elasticsearch.url>` configuration
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setting is the *minimum* required for an Elasticsearch service endpoint. All
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other configuration settings are *optional*. See
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:ref:`minio-server-config-bucket-notification-elasticsearch` for a complete list
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of Elasticsearch configuration settings.
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3) Restart the MinIO Deployment
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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You must restart the MinIO deployment to apply the configuration changes.
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Use the :mc-cmd:`mc admin service restart` command to restart the deployment.
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.. code-block:: shell
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:class: copyable
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mc admin service restart ALIAS
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|
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Replace ``ALIAS`` with the :ref:`alias <alias>` of the deployment to
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restart.
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The :mc:`minio server` process prints a line on startup for each configured
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Elasticsearch target similar to the following:
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|
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.. code-block:: shell
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SQS ARNs: arn:minio:sqs::primary:elasticsearch
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4) Validate the Changes
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~~~~~~~~~~~~~~~~~~~~~~~
|
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Perform an action on a bucket which has an event configuration using the updated
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Elasticsearch service endpoint and check the Elasticsearch service for the
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notification data. The action required depends on which
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:mc-cmd:`events <mc event add --event>` were specified when configuring the bucket
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notification.
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|
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For example, if the bucket notification configuration includes the
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``s3:ObjectCreated:Put`` event, you can use the
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:mc-cmd:`mc cp` command to create a new object in the bucket and trigger
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a notification.
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.. code-block:: shell
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:class: copyable
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mc cp ~/data/new-object.txt ALIAS/BUCKET
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