Release Notes 3.20.1

These release notes contain information about new features, improvements, known issues, and bug fixes in the NGINX Controller Application Delivery Module.

We encourage you to install the latest version of the NGINX Controller Application Delivery module to take advantage of the newest features and updates.

Technical support is provided for earlier versions that were released within two years of the current release.

See Also:

For related installation documentation, refer to the following publications:

 


October 19, 2021

Upgrade Considerations

Take note of the following considerations when upgrading to this version of the NGINX Controller App Delivery Module:

  • After upgrading NGINX Controller, make sure to upgrade the NGINX Controller Agent too.

    Caution:
    If you’re upgrading from NGINX Controller 3.18 or earlier to the NGINX Controller App Delivery Module 3.20 or later, the Controller Agent will go offline during the upgrade process.
  • If you’re upgrading NGINX Controller on a multi-node cluster, run the update.sh script on each node individually – the order in which you update the nodes doesn’t matter.

    Warning:
    Never update the control nodes in parallel. Doing so may result in race conditions for certain jobs, such as database migrations, and may cause the cluster to become unavailable.

What’s New

Supported NGINX Plus Versions

This version of NGINX Controller works with the following NGINX Plus versions:

  • NGINX Plus R25
  • NGINX Plus R24
  • NGINX Plus R23
  • NGINX Plus R22
  • NGINX Plus R21
  • NGINX Plus R20
  • NGINX Plus R19