This is version 2.3 of the AWS Elemental Delta documentation. This is the latest version. For prior versions, see the Previous Versions section of AWS Elemental Delta Documentation.
About This Guide
This guide is intended for engineers who are upgrading or downgrading software versions of an existing installation of AWS Elemental Delta.
The following types of deployments are addressed:
- Single AWS Elemental Delta node
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One Delta node without a secondary Delta node. One node provides all input and output support. There is no redundancy for the Delta node.
- Simple AWS Elemental Delta cluster
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One Delta node is the leader, with another node as a secondary. The leader node receives input and responds to output requests. The secondary node provides input redundancy for the cluster and handles outgoing content requests.
- AWS Elemental Delta cluster with egress nodes
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One Delta node is the leader, one a secondary, and one or more additional nodes are used for egress only. The leader node receives input and responds to output requests. The secondary node provides input redundancy for the cluster and handles outgoing content requests. The egress nodes handle requests for output but don't handle input.
For more information about these various deployments, see AWS Elemental Delta version 2.3 Configuration Guide.
Prerequisite Knowledge
It is assumed that you know how to:
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Log into a Linux session in order to work via the command line interface.
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Access the location where you typically download files from the internet.
Note
To receive assistance with your AWS Elemental appliances and software
products, see the forums and other helpful tools on the AWS Elemental Support Center
File Permissions
Unless otherwise stated, enter all Linux commands from the home directory
(/home/elemental). To ensure that the command can complete regardless of your
file permissions, most commands include sudo to execute the command as a
superuser.
