Suppose you are hitting a basic update command to update the system in the bash!

$ yum update -y 

 ——-OR ——-

$ dnf update -y

But you receive the below error in response :- 

To resolve the error follow the easy 4 steps:- 

Step1:-  Open the file destination ” /etc/resolv.conf ” by any text editor, in my case i am using vi editor 

               $ vi /etc/resolv.conf

Step 2:- After opening the file, paste the below lines in the file 

  # Generated by NetworkManager
  search strad
  nameserver 8.8.8.8 
  nameserver 8.8.4.4

Step 3:- Clan all cache 

          $ yum clean all 

Step 4:- Run the update command again 

         $ yum update -y