Week in Review: Digital Rebar Provision v3.8.0 Release

Welcome to the RackN and Digital Rebar Weekly Review. You will find the latest news related to Edge, DevOps, SRE and other relevant topics.

Digital Rebar Provision Announces v3.8.0 – Workflows

Workflows are a first-class element of the system now. They have their own API endpoint and machine object field. They simplify all the MATH that used to be in the change-stage/map.

Key Features in the Release:

  • Workflows
    • Create Workflow object that replaces change-stage/map method for changing stages on machines
    • Maintain backwards compatibility with the change-stage/map system.
    • Update Machine object to have workflow as first-class field
    • Update Validations to properly control workflow states.
    • Allow events to be publish but not propagated. This allows for local log file logging of events without loops.
    • Add Windows-based drpcli to drp
    • More



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Don’t Fear the Reboot – Safe Patterns for Automating Metal

Author: Greg Althaus, CTO/Co-Founder RackN

Over the past few years we spent time with a wide variety of IT organizations to better understand the challenges they face deploying and enabling solutions. Two key themes emerged from these conversations:

  1. Zero-Touch (or as close as possible) Infrastructure
  2. Manual Inventory and Processes Don’t Scale and are Error Prone

With these two fundamental concepts in mind, we developed a highly targeted solution built on technology from the Digital Rebar open source community:

  • Digital Rebar Provision(DRP) provides a light-weight and easy to deploy API driven system to drive machines though a complete life-cycle.
  • DRP is designed around the concept of composition; the ability to build units of function that can be added to workflows so that infrastructure can be built and rebuilt consistently with fast error paths to discover problems.
  • RackN and the community offer content packages built for DRP to meet the needs of operators.

DRP operation follows a workflow pattern for machines from discovery to provisioned to decommission. This workflow approach allows operators to stage infrastructure provisioning with checks at critical stages of the process. There are 5 common workflows built into the tool; however additional workflows can be created and customized:

  •      Workflow 1 : DISCOVERY
  •      Workflow 2 : INSTALL
  •      Workflow 3 : DECOMMISSION
  •      Workflow 4 : MAINTENANCE
  •      Workflow 5 : RESTART

Over the next few weeks, I will be posting detailed blogs about each workflow stage providing insight into why this architecture was chosen and the benefits to operators. If you are interested in learning more about the Digital Rebar community or getting started with our RackN technology built on Digital Rebar I encourage you to click below: