The first time you start Jenkins, the configuration is created along with the initial default administrator account.

If for some reason you have skipped the user-creation step in the setup wizard, you can use the default admin username and password to access the Jenkins UI.

The Jenkins default password is stored in the $JENKINS_HOME/secrets/initialAdminPassword file.

Default Jenkins Password

The Jenkins default username is admin.

The Jenkins default password has to be written to the $JENKINS_HOME/secrets/initialAdminPassword file on the server, that is usually located at:

/var/lib/jenkins/secrets/initialAdminPassword
Default UsernameFile with default Password
admin/var/lib/jenkins/secrets/initialAdminPassword