For more information about block device mappings, see `Block device mapping <http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/block-device-mapping-concepts.html>`__ in the *Amazon EC2 User Guide*.

For more information about instance user data, see `Working with instance user data <http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instancedata-add-user-data.html>`__ in the *Amazon EC2 User Guide*.

For more information about burstable performance instances, see `Burstable performance instances <http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/burstable-performance-instances.html>`__ in the *Amazon EC2 User Guide*.

The following examples use the ``--configurations`` parameter to specify a JSON configuration file that contains application customizations for Hadoop. For more information, see `Configuring Applications <http://docs.aws.amazon.com/emr/latest/ReleaseGuide/emr-configure-apps.html>`__ in the *Amazon EMR Release Guide*.

The following ``create-cluster`` example creates a cluster with the Amazon EC2 key pair named ``myKey`` and a customized instance profile named ``myProfile``. Key pairs are used to authorize SSH connections to cluster nodes, most often the master node. For more information, see `Use an Amazon EC2 Key Pair for SSH Credentials <http://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-plan-access-ssh.html>`__ in the *Amazon EMR Management Guide*. ::

You can attach automatic scaling policies to core and task instance groups using Amazon EMR version 4.0 and later. The automatic scaling policy dynamically adds and removes EC2 instances in response to an Amazon CloudWatch metric. For more information, see `Using Automatic Scaling in Amazon EMR` <http://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-automatic-scaling.html>`_ in the *Amazon EMR Management Guide*.

For more information, see `Enabling a Virtual MFA Device <http://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_mfa_enable_virtual.html>`__ in the *AWS Identity and Access Management User Guide*.

For more information, see `Creating a Role <http://docs.aws.amazon.com/IAM/latest/UserGuide/creating-role.html>`__ in the *Using IAM* guide.

The following ``list-signing-certificates`` command lists the signing certificates for the IAM user named ``Bob``::

For more information, see `Creating and Uploading a User Signing Certificate <http://docs.aws.amazon.com/IAM/latest/UserGuide/Using_UploadCertificate.html>`__ in the *Using IAM* guide.

For more information, see `Using Multi-Factor Authentication (MFA) Devices in AWS <http://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_mfa.html>`__ in the *AWS Identity and Access Management User Guide*.

For more information, see `Creating a Channel from Scratch<http://docs.aws.amazon.com/medialive/latest/ug/creating-channel-scratch.html>`__ in the *AWS Elemental MediaLive User Guide*.

For more information on deployment, see `Deploying Apps <http://docs.aws.amazon.com/opsworks/latest/userguide/workingapps-deploying.html>`__ in the *AWS OpsWorks User Guide*.

For more information, see `Run Stack Commands <http://docs.aws.amazon.com/opsworks/latest/userguide/workingstacks-commands.html>`__ in the *AWS OpsWorks User Guide*.

For more information, see `Run Stack Commands <http://docs.aws.amazon.com/opsworks/latest/userguide/workingstacks-commands.html>`__ in the *AWS OpsWorks User Guide*.

The following ``create-server`` example creates a new Chef Automate server named ``automate-06`` in your default region. Note that defaults are used for most other settings, such as number of backups to retain, and maintenance and backup start times. Before you run a ``create-server`` command, complete prerequisites in `Getting Started with AWS OpsWorks for Chef Automate <http://docs.aws.amazon.com/opsworks/latest/userguide/gettingstarted-opscm.html>`__ in the *AWS Opsworks for Chef Automate User Guide*. ::

For more information, see `CreateServer <http://docs.aws.amazon.com/opsworks-cm/latest/APIReference/API_CreateServer.html>`__ in the *AWS OpsWorks for Chef Automate API Reference*.