[JENKINS-73553] New permanent agent using incorrect Docker launch details fails with NoStaplerConstructorException

Reproduction steps:

// I ran it with mvn hpi:run with the newest version of the docker plugin

• from Jenkins dashboard, click 'Build Executor Status'


• click ‘New Node’ button


• name it anything, click ‘Permanent Agent’ option


• I put the remote root directory as /tmp and left everything else as is


• click ‘Save' and boom, angry Jenkins

Theory:

• it is due to the launch method ‘Docker variant of Launch agents via SSH awith SSH key injection’ - does not fail gracefully when given incorrect details


• I played with leaving the host empty and typing in something, and either way got the same stack trace

Stack trace is attached.

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Originally reported by julieheard, imported from: New permanent agent using incorrect Docker launch details fails with NoStaplerConstructorException

• status: Open
  
• priority: Minor
  
• component(s): docker-plugin
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 2
  
• imported: 20260709-204134
  

Raw content of original issue

Reproduction steps:

// I ran it with mvn hpi:run with the newest version of the docker plugin



	
from Jenkins dashboard, click 'Build Executor Status'

	
click ‘New Node’ button

	
name it anything, click ‘Permanent Agent’ option

	
I put the remote root directory as /tmp and left everything else as is

	
click ‘Save' and boom, angry Jenkins



Theory:



	
it is due to the launch method ‘Docker variant of Launch agents via SSH awith SSH key injection’ - does not fail gracefully when given incorrect details

	
I played with leaving the host empty and typing in something, and either way got the same stack trace



Stack trace is attached.

• environment: Newest version of the plugin

1 attachment

- [stack-trace](https://raw.githubusercontent.com/jenkinsci/attachments-from-jira-issues-misc/refs/heads/main/attachments/63101/stack-trace)