This is a guide to installing the WhereScape Enablement Pack for Redshift for WhereScape RED

Prerequisites For PostgreSQL Metadata

Before you begin the following prerequisites must be met:

• Create Database and ODBC DSN:
  • Supported* version of PostgreSQL (PostgreSQL 12 or higher)
    • A database to house the RED Metadata Repository.
    • A database to house scheduler (Optional)
• Software Installations
  • WhereScape RED10.1.x.x with valid license key entered and EULA accepted
  • WhereScape Enablement Pack for target database version RED10.1.x.x 
• Windows Powershell (64-bit) version 4 or higher
  • To check the Windows Powershell Version:
    • Run the below command in Windows Powershell
      

      Get-Host|Select-Object Version

• • • Run the below command in Command Prompt
      

      powershell $psversiontable

• Run the following command using PowerShell
  • • The security protocol TLS 1.0 and 1.1 used by PowerShell to communicate with PowerShell gallery has deprecated and TLS 1.2 has been made mandatory
      

      \[Net.ServicePointManager\]::SecurityProtocol = \[Net.ServicePointManager\]::SecurityProtocol -bor \[Net.SecurityProtocolType\]::Tls12 Register-PSRepository -Default -Verbose Set-PSRepository -Name "PSGallery" -InstallationPolicy Trusted

      
      

• • • Progress bar placeholder info line
      

      Install-Module -Name PoshProgressBar -SkipPublisherCheck -Force

      
      
• RED supports the following versions for the metadata repository: PostgreSQL 12 or higher 

Prerequisites Target Database

Before you begin the following prerequisites must be met:

1. Access to a Redshift System, with the following connectivity information:
   • Server Name
   • Database Name
   • Port
   • User Name
   • Password
2. Access to an S3 bucket in the same region as your Redshift system to be used for temporary files while loading data from Windows files and database tables. Specifically, you need to know:
   • Access Key, Secret Key, Region
   • S3 storage location in this format: s3://bucketName/folderName
3. Create Database and ODBC DSN Redshift ODBC driver (64-bit)
   • Redshift (64-bit ODBC driver version 1.5.9)
   • Add ODBC DSN for Redshift Target Database
4. Redshift software installed
   • Amazon Redshift ODBC driver (64-bit)
   • ODBC DSN was created to connect to your RED Data Warehouse on Redshift.
5. Python 3.8 or higher 
   • Select "Add Python 3.8 to PATH" from the installation Window
   • Pip Manager Install with command: python -m pip install --upgrade pip

 Post Install Steps - Optional

If you used the script Setup Wizard for installation then the following optional post-install steps are available.

Configure Connections

There were two connections added that will optionally require your attention :

1. Connection: Data Warehouse ('Redshift' )- This connection was set as per parameters provided in Setup Wizard
   • open its properties and check the extended properties tab, set it up for Access Key, Secret Key, S3 Region, and S3 Storage Location
2. Connection: 'Database Source System' - this connection was set up as an example source connection,
   • open its properties and set it up for a source DB in your environment
   • or you can remove it if not required

Source Enablement Pack Support

Troubleshooting and Tips

Run As Administrator

Press the Windows Key on your keyboard and start typing cmd.exe, when the cmd.exe icon shows up in the search list right click it to bring up the context menu, select Run As Administrator
Now you have an admin prompt navigate to to the folder where you have unpacked your WhereScape Red Enablement Pack using the cd command:
C:\Windows\system32> cd <full path to the unpacked folder> 
Run Powershell (.ps1) scripts from the administrator prompt by typing the Powershell run script command, for example:
C:\temp\EnablementPack>Powershell -ExecutionPolicy Bypass -File .\Setup_Enablement_Pack.ps1

Windows Powershell Script Execution

On some systems, Windows Powershell script execution is disabled by default. There are several workarounds for this which can be found by searching the term "Powershell Execution Policy".
Here is the most common workaround that WhereScape suggests, which does not permanently change the execution rights:
Start a Windows CMD prompt as Administrator, change the directory to your script directory, and run the WhereScape Powershell scripts with this command:

• cmd:>Powershell -ExecutionPolicy Bypass -File .\<script_file_name.ps1>

Restarting failed scripts

Some of the setup scripts will track each step and output the step number when there is a failure. To restart from the failed step (or to skip the step) provide the parameter "-startAtStep <step number>" to the script.
Example: 
Powershell -ExecutionPolicy Bypass -File .\<script_file_name.ps1> -startAtStep 123

Python requirements for offline install

Additionally to the base Python installation being required, the WhereScape Python Template set also requires certain additional Python libraries. The install scripts use the PIP (package manager) to download these libraries, however, for offline installs, you will need to install the required libraries yourself.
Required Python libraries/add-ons:

• pywin32-ctypes
• python-tds
• pywin32
• glob2
• gzip-reader
• regex
• pyodbc

If a valid RED installation can not be found

If you have RED 10.x or higher installed but the script (Setup_Enablement_Pack.ps1) fails to find it on your system then you are most likely running PowerShell (x86) version which does not show installed 64-bit apps by default. Please open a 64-bit version of Powershell instead and re-run the script.