# Getting Started

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This page was generated from content adapted from the [AWS Developer Guide](https://github.com/awsdocs/amazon-managed-blockchain-management-guide.git)
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## Prerequisites and Considerations

* **Important**\
  This security group configuration is recommended for this tutorial only. Carefully consider security group settings for your desired security posture. For information about the minimum required rules, see [Configuring Security Groups for Hyperledger Fabric on Amazon Managed Blockchain](https://github.com/kevinslin/aws-reference-notes/blob/main/services/amazon_managed_blockchain/managed-blockchain-security-sgs.md).

## Step 4: Set Up a Client

* **Note**\
  An AWS CloudFormation template to create a Hyperledger Fabric client is available in [amazon-managed-blockchain-client-templates repository](https://github.com/awslabs/amazon-managed-blockchain-client-templates) on Github. For more information, see the [readme.md](https://github.com/awslabs/amazon-managed-blockchain-client-templates/blob/master/README.md) in that repository. For more information about using AWS CloudFormation, see [Getting Started](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/GettingStarted.Walkthrough.html) in the *AWS CloudFormation User Guide*.
* **Note**\
  If you are working with Hyperledger Fabric v1.2 networks, you need to install and build the correct client version, which is available at <https://github.com/hyperledger/fabric-ca/releases/download/v1.2.1/hyperledger-fabric-ca-linux-amd64-1.2.1.tar.gz>.
* **Note**\
  If you are working with Hyperledger Fabric v1.2 networks, use `--branch v1.2.0` instead of `--branch v1.4.7` in the following commmands.
* **Note**\
  If you are working with Hyperledger Fabric v1.2 networks, use `image: hyperledger/fabric-tools:1.2` in the following example instead of `image: hyperledger/fabric-tools:1.4`. In addition, use `CORE_LOGGING_LEVEL=info` instead of `FABRIC_LOGGING_SPEC=info`.

## Step 5: Enroll the Member Admin

* **Important**\
  It may take a minute or two after you enroll for you to be able to use your administrator certificate to create a channel with the ordering service.

## Step 6: Create a Channel

* **Note**\
  All Hyperledger Fabric networks on Managed Blockchain support a maximum of 8 channels per network, regardless of network edition.
* **Important**\
  This file is sensitive. Artifacts from pasting can cause the file to fail with marshalling errors. We recommend using `emacs` to edit it. You can also use `VI`, but before using `VI`, enter `:set paste`, press `i` to enter insert mode, paste the contents, press escape, and then enter `:set nopaste` before saving.
* **Important**\
  Hyperledger Fabric 1.4 requires that a channel ID contain only lowercase ASCII alphanumeric characters, dots (.), and dashes (-). It must start with a letter, and must be fewer than 250 characters.

## Step 8: Invite a Member and Create a Multi-Member Channel

* **Important**\
  This file is sensitive. Artifacts from pasting can cause the file to fail with marshalling errors. We recommend using `emacs` to edit it. You can also use `VI`, but before using `VI`, enter `:set paste`, press `i` to enter insert mode, paste the contents, press escape, and then enter `:set nopaste` before saving.