How can I solve these problems :
| Failed to load: GitLab Plugin (gitlab-plugin 1.9.8) - Failed to load: Jackson 2 API Plugin (jackson2-api 2.20.1-423.v13951f6b_6532) | |||
|---|---|---|---|
| Jackson 2 API Plugin |
Failed to load: Jackson 2 API Plugin (jackson2-api 2.20.1-423.v13951f6b_6532) - Plugin is missing: json-api (20250107-125.v28b_a_ffa_eb_f01)|
First, do some web searches! One issue you get with plugin installs with Jenkins is that there are a lot of interdependencies, and I found that you needed to get bouncycastle (an encryption plugin) to update, based on the errors you get when trying to do the updates. So you need to force Jenkins to restart before Git and Gitlab will be installed.
You can force Jenkins to restart from the UI by loading JENKINS-URL/restart, where JENKINS-URL is whatever link you use in the lab to get to the Jenkins web UI. Once Jenkins restart, you can get the plugins to install.