Timeout During Image Pulling from Docker Hub When Access to Docker Hub Is Normal

Symptom

Image pulling from Docker Hub times out when access to Docker Hub is normal.

Key Process and Cause Analysis

docker pull is denied by SELinux.

Conclusion and Solution

1. Disable SELinux temporarily.

   setenforce 0

2. Change SELINUX=enforcing to SELINUX=permissive or SELINUX=disabled in the /etc/selinux/config file.