1. When installing ubuntu with vcenter, set the network to always restart, set the name server to point to an ipa dns service, always restart, ok without setting, you can go in
2. The user name that was explicitly set during installation was jenkinscd, and what nickname was set to jenkins_cd. When logging in, always use jenkinscd to log in. Finally, press shift, then select advanced options, then recover mode, then press e , Delete recovery nomodeset, and enter quiet splash rw init = / bin / bash after this line, press F10, enter to view cat / etc / passwd, see the user name is jenkins_cd before logging in, a user name setting is so complicated What are you doing?
