RHEL7:如何解决“import read failed(2)”?

RHEL7: How to solve “ import read failed(2)”?

我正在尝试使用以下命令(取自 link https://docs.docker.com/docker-trusted-registry/install/install-csengine/)为 CS 包添加 Docker 的 public 密钥:

sudo rpm --import "https://sks-keyservers.net/pks/lookup?op=get&search=0xee6d536cf7dc86e2d7d56f59a178ac6c6238f52e"  

但是,我在 运行 上述命令中收到以下错误:

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).

是否是防火墙问题??

如果我需要在 /etc/hosts 中添加主机条目,请告诉我?

此问题是由您的防火墙引起的,启用/禁用它并重试

systemctl disable firewalld
systemctl stop firewalld

systemctl enable firewalld
systemctl start firewalld