I'm learning devops and working on a project to install jenkins on an aws ec2 that is on a private subnet. Following the digital ocean doc, I was able to install it successfully and the jenkins service is running.

https://www.digitalocean.com/community/tutorials/how-to-install-jenkins-on-ubuntu-20-04

I have an ALB setup to access Jenkins, but the target group is failing with the health check 403.

When I try to curl on http://localhost:8080 on the same ec2 host or from the bastion host, I get an "Authentication required" error, and doing curl with -I gives me HTTP/1.1 403 Forbidden.

I've spent a lot of time trying to get help on Google, but nothing worked and I'm kinda stuck here.

Can someone please point me in the right direction?

CodePudding user response：

Try using the /login instead.

curl -v http://localhost:8080/login