Capítulo 5. Preparing and Uploading cloud images with Image Builder


Image Builder can create custom system images ready for use in clouds of various providers. To use your customized RHEL system image in a cloud, create the system image with Image Builder using the respective output type, configure your system for uploading the image, and upload the image to your cloud account. From Red Hat Enterprise Linux 8.3, the ability to push customized images clouds through the Image Builder application in the RHEL web console is available for a subset of the service providers that we support, such as AWS and Azure clouds. See Pushing images to AWS Cloud AMI and Pushing VHD imaged to Azure cloud.

5.1. Preparing for uploading AWS AMI images

This describes steps to configure a system for uploading AWS AMI images.

Prerequisites

Procedure

  1. Install Python 3 and the pip tool:

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    # yum install python3
    # yum install python3-pip
  2. Install the AWS command-line tools with pip:

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    # pip3 install awscli
  3. Run the following command to set your profile. The terminal prompts you to provide your credentials, region and output format:

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    $ aws configure
    AWS Access Key ID [None]:
    AWS Secret Access Key [None]:
    Default region name [None]:
    Default output format [None]:
  4. Define a name for your bucket and use the following command to create a bucket:

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    $ BUCKET=bucketname
    $ aws s3 mb s3://$BUCKET

    Replace bucketname with the actual bucket name. It must be a globally unique name. As a result, your bucket is created.

  5. Then, to grant permission to access the S3 bucket, create a vmimport S3 Role in IAM, if you have not already done so in the past:

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    $ printf '{ "Version": "2012-10-17", "Statement": [ { "Effect": "Allow", "Principal": { "Service": "vmie.amazonaws.com" }, "Action": "sts:AssumeRole", "Condition": { "StringEquals":{ "sts:Externalid": "vmimport" } } } ] }' > trust-policy.json
    $ printf '{ "Version":"2012-10-17", "Statement":[ { "Effect":"Allow", "Action":[ "s3:GetBucketLocation", "s3:GetObject", "s3:ListBucket" ], "Resource":[ "arn:aws:s3:::%s", "arn:aws:s3:::%s/*" ] }, { "Effect":"Allow", "Action":[ "ec2:ModifySnapshotAttribute", "ec2:CopySnapshot", "ec2:RegisterImage", "ec2:Describe*" ], "Resource":"*" } ] }' $BUCKET $BUCKET > role-policy.json
    $ aws iam create-role --role-name vmimport --assume-role-policy-document file://trust-policy.json
    $ aws iam put-role-policy --role-name vmimport --policy-name vmimport --policy-document file://role-policy.json
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