Ytdyklly

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]

have you tried running this via echoing the password in the shell?

echo "echo 'yourpassword'; sudo -S -c 'ls -l /root'"|pssh -I -H hostlist.txt


To provide the password as securely, as possible, try this version (pssh on CentOS, Fedora and parallel-ssh on Ubuntu, Debian):

stty -echo; printf "Password: "; read PWD; stty echo; echo "${PWD}" |
ssh <USER>@localhost "sudo -S dmesg"

and then adapt it to pssh like this:

stty -echo; printf "Password: "; read PWD; stty echo; echo "${PWD}" |
pssh -H <USER>@localhost -o /tmp/output -I "sudo -S dmesg"

I use the same for ad-hoc collection of dumps from multiple servers. Stop it using Ctrl + C as usual. It will show [FAILURE] <HOST> Interrupted, but that is just because tcpdump would otherwise run infinitely - the output is still in the usual location. The -t 0 option is so the connection doesn't time out. I could also use tmux or screen and collect the dumps later.

stty -echo; printf "Password: "; read PWD; stty echo; echo "${PWD}" |
pssh -h <HOSTFILE> -o /tmp/output -t 0 -I "sudo -S tcpdump -l -nn -vv -i any not port 22"

Make sure to include the correct ssh user and that you connected to those servers before. Testing things locally usually prevents taking down the entire fleet of servers. You can use the 127.0.0.X addresses instead of localhost to approximate multiple hosts.