SSHing with multiple hops

Shell Programming and Scripting
1

Hi,
I have got a shell script, which fails to run properly..
I am getting the following error:
"Pseudo-terminal will not be allocated because stdin is not a terminal.

Permission denied (gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive)."

I SSH to the machine and then run the following Shell script..

#!/bin/sh
# Configuration vars
ServerMap="/usr/local/scripts/SeverMaps.txt"
Ssh="/usr/bin/ssh"
PATH=/usr/bin:$PATH

##############################################################
#
# Functions
#

ErrorExit() {

    echo $1
    echo "Press \"Enter\" to exit."

    # Wait for user to press "enter", we are not intereseted in anything else
    read SomeThing

    exit

}

PrintHelp() {
    echo
    echo "Version $Version"
    echo
    ErrorExit " "

    return
}

##############################################################
#
# Main Body
#
# $1 is "Location", $2 is "Node"
#

# Make sure both vars are present
if [ "$1" = "-v" ]; then
    echo
    echo "-v switch specified, printing version number:"
    echo "Version $Version"
    echo
    exit
fi

if [ -z "$2" ]; then
    echo ""
    echo "Error: Missing arguments"
    echo "Location = $1, Node = $2."
    PrintHelp
fi

# Make sure the USER env var is present
if [ -z "$USER" ]; then
    ErrorExit "Error: Environment not set correcty (USER not specified)."
fi

# Get a count of lines matching $1, more or less than one is invalid.
Count=`cat $ServerMap | grep -v "#" | grep -c "^$1"`
if [ $Count -ne 1 ]; then
    ErrorExit "Error: Too many or no matches for Location name $1 in map file. ($Count)"
fi

# Get the name of the remote server
Server=`grep "^$1" $ServerMap | grep -v "#" | awk '{print $2}'`
if [ -z "$Server" ]; then
    ErrorExit "Error: Server name for $1 not specifed in map file."
fi


# Get this server FQDN
ThisServer="`hostname | cut -d . -f 1`.`cat /etc/resolv.conf | grep domain | awk '{print $2}'`"

if [ "$ThisServer" = "$Server" ]; then
    # We are launching from the same server, no need to ssh

    # Let the user know what is happening.
    echo "SSH to device $2"

    # Call the command line
    $Ssh -t $USER@$2

else
    # Server is a remote server, we need to ssh       
    # Call the command line
    $Ssh -t $USER@$Server $NcoPipe $SshR -t $USER@$2
fi

Could someone help me figure out, why this error comes up, and how i can resolve this issue??

Thanks In Advance,
Blub:)

2

i have got a similar problem, and people here solved it: Problem while scp if bashrc calls Perl script