How can I configure a global jenkins credential?

[Chris Caywood]

From the documentation I can set it up per project or repository, but I'd like to set the credential globally, because I will have so many projects and repos. 

[Marcin]

Unfortunately Stash does not currently have any way to set a global SSH access key, however SSH keys are manageable via REST, so you could script adding the Jenkins SSH key to all projects (which would then apply to all repositories).

For example to add an Access Key to the PROJECT project:

curl -u user:pass \
	-X POST \
	-H "Accept: application/json" \
	-H "Content-Type: application/json" \
	http://stash.server/rest/keys/1.0/projects/PROJECT/ssh \
	-d '{"key": { "text": "ssh-rsa ...." }, "permission": "PROJECT_READ"}'

You could create a script that used the Projects resource to get a list of all Projects in Stash, and then POST the Jenkins SSH key for each of those. Duplicate keys are handled gracefully, so there wouldn't be any harm running this for a project that had already had that key added.