Issue with resize and stty on remote ssh script?

Question

Scenario: Source host (Solaris 5.10, KSH), im trying to run the following script named sample.ksh on source

#!/bin/ksh
set -x
Rediscover ()
{
ssh user@hostB ./scripts/test.ksh
}
Rediscover
exit 0

Remote Host: Linux (bash shell), i have the following script called test.ksh

#!/bin/bash -x
resize
stty -a
exit

Issue: I can run the test.ksh without any issues directly on Linux host but when i try to run it remotely from solaris i am getting the follwoing error.

root@hostA# ./sample.ksh
+ Rediscover
+ resize
resize:  can't open terminal /dev/tty
+ stty -a
stty: standard input: Invalid argument
+ exit
+ exit 0

Why can't i see the output of resize and stty -a remotely ??

SSH keys were setup from A to B

Answer 1

You can force interactive session using -tt switch in your script:

ssh -tt user@hostB ./scripts/test.ksh

Otherwise the TTY on the hostB will not get allocated and you will get such errors.