Why is sudo command asking for root password in Linux

I have written two blogs earlier to help you understand sudo configuration and its function which you can follow using the below link
How to configure passwordless sudo for a user in Linux
How to give permission to user to run some commands in Linux

In this blog I will try to keep my self strictly to the point of issue. You might have noticed that at times when you try to execute a command using sudo user it prompts for root password.

Reason:

You can see the below line in your /etc/sudoers file
Defaults       targetpw
[deepak@test ~]$ sudo /etc/init.d/sshd restart
[sudo] password for root:
As per this configuration ask for the password of the target user i.e. root.

Solution: