When you will solve missing Jenkins login page on the Linux server. The main reason behind is when Jenkins installed it will ask you to login with your credentials if there’s no security check. you can change the login page method as admin in Jenkins.
Once you changed the login method in Jenkins and you can also apply a third party login method with Jenkins. So, all the users will be authenticated with security.
How To Solve Missing Jenkins Login :
This can be solved by enabling the security check-in Jenkins server via GUI. I do not have Jenkins's login page right now.
Now you need to check whether you have to click on the check at “enable security” in configure global securing.
Click on “Manage Jenkins” and look for configure global securing.
Once you click on it, click on “Enable Security” and Select “Jenkins’ own user database”.
Now you also need to check on “Logged-in users can do anything” and save now you will get login dashboard.
Now you can see the login dashboard for Jenkins with username and password.
That’s it. change jenkins login page method as admin