[JENKINS-64755] Invalid GitLab server URL when adding gitlab url

 Jenkins can access gitlab through the extranet IP address, and can use git with ssh key to clone projects from gitlab.

 

Then I followed the GitLab Branch Source Plugin tutorial and configured it step by step, but when I entered my gitlab server extranet IP address, I was prompted with this,

 

Invalid GitLab Server URL: https://xxx.xxx.xxx.xxx:9xx8

and when I clicked on the test connection I got the following error.

Failed to validate the account javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No subject alternative names present 

Attached was the show details error report.

 

What should I do?

 

 

---
Originally reported by only_wild_weeds, imported from: Invalid GitLab server URL when adding gitlab url

• assignee: baymac
  
• status: Open
  
• priority: Major
  
• component(s): gitlab-branch-source-plugin
  
• label(s): plugin
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 2
  
• imported: 20251216-182730
  

Raw content of original issue

 Jenkins can access gitlab through the extranet IP address, and can use git with ssh key to clone projects from gitlab.


 


Then I followed the GitLab Branch Source Plugin tutorial and configured it step by step, but when I entered my gitlab server extranet IP address, I was prompted with this,


 



Invalid GitLab Server URL: https://xxx.xxx.xxx.xxx:9xx8





and when I clicked on the test connection I got the following error.



Failed to validate the account javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No subject alternative names present 





Attached was the show details error report.


 


What should I do?


 


 

environment

```
Jenkins: 2.263.1

GitLab Branch Source Plugin: 1.5.3

Gitlab API Plugin: 1.0.6

GitLab: 12.9.0
```

1 attachment

- [error.log](https://issues.jenkins.io/secure/attachment/53908/error.log)