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Creating PNDA on an existing server cluster

What does this mean

PNDA can be installed using the PNDA CLI onto pre-existing machines. In this mode the Cloud Formation and Openstack parts of the pnda-cli are disabled and it runs only the bootstrap and saltstack stages of PNDA creation.

The bootstrap stage involves running shell scripts on each machine to install a saltstack cluster with each minion having the correct set of salt roles.

The saltstack stage involves running various salt states to install the PNDA software

Overview

At a high level overview, creating PNDA on existing machines involves -

  • Finding some machines and ensuring they have an operating system, key based log in, appropriate disk drives and networking all set up before running the pnda-cli.
  • Writing a json descriptor that defines the IP address and type of each machine in the cluster.
  • Creating a PNDA mirror to serve the resources used to create PNDA.
  • Running the pnda-cli to install a saltstack cluster across the set of machines and then saltstack commands to install all of the PNDA software.

Existing Machines Install Guide

A detailed walkthrough of the installation process is available in the PNDA guide.