SSH connect very slow due to the root user isn't known by system services

Solution Unverified - Updated -


  • When the error "dbus-daemon: Unknown username "root" in message bus configuration file " and "sshd[12465]: input_userauth_request: invalid user root [preauth]" in /var/log/messages , it may caused SSH connect very slow that takes more than 20~30 seconds.


  • Red Hat Enterprise Linux 7

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