I want to su from hadoopmaster to hduser. When I do it on the terminal, I do:
su - hduser
which then asks me for the password and I enter it and I get in to hduser. How can I do the same in a shell script without having to worry about the password? I tried the sudoers file method where I put:
root ALL=(ALL:ALL) ALL
hduser ALL=(ALL:ALL) ALL
hadoopmaster ALL=(ALL:ALL) NOPASSWD: /bin/su hduser
(here I tried different combinations of the line with and without the '-' and also
with and without /bin)
I did this and when I do su hduser or su - hduser, it prompts me for the password again. What do I do?