ssh: connect to host .....No route to host

soumyacs · 10-27-2009, 07:55 AM

Hi All,

I am exceuting a script file after connecting a server using ssh .

ssh -f <IPADDRESS1> '/root/Desktop/a.sh &'

ssh -f <IPADDRESS2> '/root/Desktop/a.sh &'
....................

Now Out of 10 ips , 7 ips are connected. For rest of the ips (ie 3) it is showing
ssh: connect to host .....No route to host

and I am not able to put this connection error in a log file.

So , I want a solution that will produce an error/alert message if the ip is not connected as for rest of the ips the script file is being executed properly and getting the desired result.....

Thanks in advance

Agrouf · 10-27-2009, 08:03 AM

To put the error to a log file, append this to your ssh command:

Code:

ssh -f <IPADDRESS1> '/root/Desktop/a.sh &' 2>loggile.log

soumyacs · 10-27-2009, 09:07 AM

Thanks... But I need the output also in that log file(of that file of those ips which got connected)

In that log file only error message is coming..

I want to know one thing-----------

if [ <ssh -f <IPADDRESS1> '/root/Desktop/a.sh &'> ] is true(got connected and executed)
then
"connected"
else
"not connected"

is it possible to write this type of code in shell script ??

Agrouf · 10-27-2009, 09:25 AM

do it like this:

Code:

if ssh -f <IPADDRESS1> '/root/Desktop/a.sh &'; then
   echo "connected"
else
   echo "not connected"
fi

soumyacs · 10-27-2009, 09:48 AM

Thanks it is working.

Can you pls tell me how to put this value( either connected or not connected) in to a varible??

I tried this one but is not working....

variable = `if ssh -f <IPADDRESS1> '/root/Desktop/a.sh &'; then
echo "connected"
else
echo "not connected"
fi`

Can you pls tell me the code??

Thanks in advance

Agrouf · 10-27-2009, 10:03 AM

Code:

if ssh -f <IPADDRESS1> '/root/Desktop/a.sh &'; then
   variable="connected"
else
   variable="not connected"
fi
echo "variable is $variable"