CentOS error - sudo: effective uid is not 0, is sudo installed setuid root?

Question

I found another question with the same headline, however, I suppose my case is a bit different.

In an attempt to setup the new project, I needed to install nodejs.

Answer 1

The problem is that you probably changed permissions to the directory /usr/bin.

To resolve that :

1) First be sure that root is owner of this directory /usr/bin :

chown root:root /usr/bin

2) and change permission for this directory :

chmod u+s /usr/bin/sudo