Normal user executes sudo report Hadoop is not in the sudoers file

Today in the execution of the sudo command with a normal user The times is wrong as follows:

Hadoop isn't in the sudoers file. This incident would be reported.

The measured solution is as follows:

1,root User Login.

2, enter the/etc directory.

3, execute chmod u+w/etc/sudoers to add Write permission to sudoers file.

4, perform vim sudoers find root all= (all) All this line, add hadoopall= (All) All (note: Hadoop is the user name of the normal user)

5, execute command chmod u-w sudoers, revoke write permission. ，

6. Log in to the Hadoop user for testing. such as Sudo cd/root if successfully entered the/root directory description of the successful configuration

Normal user executes sudo report Hadoop is not in the sudoers file