Error while installing curl on ubuntu

Question

I'm trying to set up a kubernetes cluster on my virtual machines. I have one master and two nodes. I'm following this blog. 

When I execute this command:

curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -

I get this error:

Could not get lock /var/lib/dpkg/lock
unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

Answer 1

Execute these commands and the try installing curl with the same command you've used again

sudo rm /var/lib/apt/lists/lock
sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock

Hope this helps.

Answer 2

This might help

https://www.edureka.co/community/18638/resource-temporarily-unavailable-while-setting-kubernetes?show=18638#q18638