When i am trying to login to particular server i am getting the following alert.What may be the reason for this and as i dont have a root password so is there any other way i can solve this issue ?


-bash-4.1$ sudo su - pluto

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

#1) Respect the privacy of others.
#2) Think before you type.
#3) With great power comes great responsibility.

[sudo] password for pbhalerao:
Sorry, user pbhalerao is not allowed to execute '/bin/su - pluto' as root on plutodev01
-bash-4.1$

What do you get from this?

User may run the following commands on this host:
(root) NOPASSWD: /usr/sbin/services myslq.server *

So you are not allowed to use su to switch to a different user, the only thing that sudo allows you is to run the services command in connection with the mysql.server option.
There is nothing that you can do about that besides asking the administrator of that system to grant you the rights you need.

Matching Defaults entries for pbhalerao on this host:
requiretty, !visiblepw, always_set_home, env_reset, env_keep="COLORS DISPLAY HOSTNAME HISTSIZE INPUTRC KDEDIR LS_COLORS",
env_keep+="MAIL PS1 PS2 QTDIR USERNAME LANG LC_ADDRESS LC_CTYPE", env_keep+="LC_COLLATE LC_IDENTIFICATION LC_MEASUREMENT
LC_MESSAGES", env_keep+="LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER LC_TELEPHONE", env_keep+="LC_TIME LC_ALL LANGUAGE LINGUAS
_XKB_CHARSET XAUTHORITY", secure_path=/sbin\:/bin\:/usr/sbin\:/usr/bin

Following is also shown when i execute sudo - l on the terminal

Still the same problem, you are simply not allowed to use su, so you have to ask the administrator.

Thanks Tobi. Information wa really very helpfull.

Not sure if I missed something, but why do you actually use sudo? You just want to switch to user pluto, right? If you know pluto's password you could simply type
No additional permissions / sudo rights needed!