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Fleet Upgrading Use Case

An example upgrading use case, starring fictional solar energy company Greatgreen Goats.

Greatgreen Goats: A Fleet Upgrading Use Case
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To help you conceptualize automatic Fleet upgrades, this use case walks you through how the fictitious company Greatgreen Goats upgrades Nodes in their two Fleets.

Greatgreen Goats is a small but rapidly growing company focused on installing and maintaining solar energy systems at goat farms around the country.

They use Cribl Edge to manage data on their edge nodes, divided into two distinct Fleets:

  • Fleet 1: Linux Operations. This Fleet contains 20 Nodes, all running Edge v.4.4.4. When the IT admin upgrades the Leader of Fleet 1 to 4.5, and they set the target upgrade version in the drop-down to None. Therefore, Nodes in Fleet 1 are never upgraded. They continue to remain at their current version, 4.4.4.
  • Fleet 2: Windows Monitoring. This Fleet contains 15 Nodes. In this Fleet, the IT admin selects the current Leader version (in this case, 4.5) in the Target upgrade version drop-down. Now, when Nodes connect to the Leader, they pull down version 4.5 and upgrade to that version.

Fast forward four weeks: Cribl Edge has released a new version: 4.5.2. The Leader is now at version 4.5.2.

Since Fleet 1 does not have a target version selected, Nodes in Fleet 1 remain at their current version, 4.4.4. If the IT admin decides to change the Target upgrade version to match the Leader in Fleet 1, the Nodes in Fleet 1 will be upgraded to 4.5.2.

Nodes in Fleet 2 will remain on version 4.5, which was the Leader’s previous version, until the admin selects the next Target upgrade version (4.5.2, the Leader’s new version). Then, Nodes will request the new version the next time they connect to the Leader and automatically upgrade.

This approach gives the IT admin at Greatgreen the flexibility to upgrade Nodes in Fleets independently from the Leader. Greatgreen can now scale and upgrade their Fleets with more reliability, since Nodes are pulling the release down from the Leader (instead of the Leader creating an overwhelming number of upgrade jobs).