Linux: ubuntu 14.04.3 LTS

cat /tmp/passfile
ABCxyz123

sshpass -f /tmp/passfile parallel-ssh -I -A -h hostlist.txt "sudo -S ls -l /root" < /tmp/passfile

and the method described here in google discussion groups.google it will out put the error as:

[1] 01:07:25 [FAILURE] 10.0.4.194 Exited with error code 255
[2] 01:07:25 [FAILURE] 10.0.4.205 Exited with error code 255

in the remote server im trying to connect its /var/log/auth.log has below message

Sep 24 19:20:52 ubu1401 sshd[5765]: Accepted password for ubuntu from 10.0.4.1 port 55019 ssh2
Sep 24 19:20:52 ubu1401 sshd[5765]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Sep 24 19:21:26 ubu1401 sshd[5765]: pam_unix(sshd:session): session closed for user ubuntu
Sep 24 19:21:26 ubu1401 sudo: pam_unix(sudo:auth): conversation failed
Sep 24 19:21:26 ubu1401 sudo: pam_unix(sudo:auth): auth could not identify password for [ubuntu]
Sep 24 19:22:25 ubu1401 sshd[5791]: Connection closed by 10.0.4.1 [preauth]

Linux: ubuntu 14.04.3 LTS

cat /tmp/passfile
ABCxyz123

sshpass -f /tmp/passfile parallel-ssh -I -A -h hostlist.txt "sudo -S ls -l /root" < /tmp/passfile

and the method described here in google discussion groups.google outputs the error as:

[1] 01:07:25 [FAILURE] 10.0.4.194 Exited with error code 255
[2] 01:07:25 [FAILURE] 10.0.4.205 Exited with error code 255

in the remote server I'm trying to connect its /var/log/auth.log has below message

Sep 24 19:20:52 ubu1401 sshd[5765]: Accepted password for ubuntu from 10.0.4.1 port 55019 ssh2
Sep 24 19:20:52 ubu1401 sshd[5765]: pam_unix(sshd:session): session opened for user ubuntu by (uid=0)
Sep 24 19:21:26 ubu1401 sshd[5765]: pam_unix(sshd:session): session closed for user ubuntu
Sep 24 19:21:26 ubu1401 sudo: pam_unix(sudo:auth): conversation failed
Sep 24 19:21:26 ubu1401 sudo: pam_unix(sudo:auth): auth could not identify password for [ubuntu]
Sep 24 19:22:25 ubu1401 sshd[5791]: Connection closed by 10.0.4.1 [preauth]