There may be some cases where you need to start a custom authentication service version, that does not follow the official update rollout installed with "ntk sys update". For example, if you have compatibility issues with latest version after update. Follow the steps below to install a previous version. 

  1. Inspect the images available with command "docker images". Authentication Server images are named either dashboard or auth-server and tag is the version number. 
  2. Configure the version with command "ntk cfg set nas.image appliance.local/dashboard:3.2.3", replace the appliance.local/dashboard:3.2.3 with selected image from step 1
  3. Restart the Authentication Server by running "ntk as restart"

During next run of "ntk sys update" you will be asked to update Authentication Server and currently automatic updates cannot be used with custom pinned service versions.