Solution:
***Restart the node2 machine and wait for the screen shown in Exhibit 1.
Press "e" to enter the screen shown in Exhibit 2.
The original configuration is as shown in the image. Modify the original configuration to the part highlighted in red box, as shown in Exhibit 2. Then press "Ctrl+X" to
execute the following commands:
# chroot /sysroot
# echo redhat |passwd --stdin root
# touch /.autorelabel
# sync
# exit
# reboot
