[chef] [Chef 12.2] API problem after upgrade

[Tiago Cruz < >]

Ohai,

I was using Chef 12.0, and I have several app who interacts with Chef Server.

After the upgrade to Chef 12.2, all of them stopped to work.

- First question: Is possible to do rollback?

I did one backup using "knife backup export" before the upgrade, but I'm not sure about the several changes in database.

- Second question: Is this issue related to API v1 from Chef 12.1?

Changelog says:
API v1 now available / API v0 deprecated

The error is:

Caused by: org.jclouds.http.HttpResponseException: java.lang.RuntimeException: Could not generate DH keypair connecting to GET https://chef.org.com/organizations/myorg/users/myuser HTTP/1.1

java.security.InvalidAlgorithmParameterException: Prime size must be multiple of 64, and can only range from 512 to 1024

In the practice mode, what should I change to work with Chef 12.2?

Thanks a lot!

--
-- Tiago Cruz