hduser@ubuntu:~$ start-dfs.sh Starting namenodes on [localhost] localhost: sign_and_send_pubkey: signing failed: agent refused operation localhost: Permission denied (publickey,password). Starting datanodes localhost: sign_and_send_pubkey: signing failed: agent refused operation localhost: Permission denied (publickey,password). Starting secondary namenodes [ubuntu] ubuntu: sign_and_send_pubkey: signing failed: agent refused operation ubuntu: Permission denied (publickey,password). hduser@ubuntu:~$
Думаю, эта команда поможет вам
eval "$(ssh-agent -s)" ssh-add
, перезапустите ssh-agent и выполните ssh-add.