I am trying to add Docker’s public key for CS packages using the following command( which is taken from the link https://docs.docker.com/docker-trusted-registry/install/install-csengine/):
sudo rpm --import "https://sks-keyservers.net/pks/lookup?op=get&search=0xee6d536cf7dc86e2d7d56f59a178ac6c6238f52e"
However, I am getting the following error on running the above command:
curl: (6) Could not resolve host: sks-keyservers.net; Name or service not known
error: https://sks-keyservers.net/pks/lookup?op=get&search=0xee6d536cf7dc86e2d7d56f59a178ac6c6238f52e: import read failed(2).
Is it a firewall issue??
Please let me know if I need to add a host entry in /etc/hosts?
This problem is caused by your firewall, enable / disable it and try again
systemctl disable firewalld
systemctl stop firewalld
or
systemctl enable firewalld
systemctl start firewalld