Docker login results in unencrypted password warning
After you log in to your private image registry with the Docker login command, a warning is displayed that indicates that your password is stored unencrypted.
A warning message is displayed when you log in to your private image registry with the following command:
docker login <cluster_CA_domain>:8500
In this command,
<cluster_CA_domain> is the certificate authority (CA) domain that was set during installation.
The command output includes the following warning:
WARNING! Your password will be stored unencrypted in /root/.docker/config.json. Configure a credential helper to remove this warning. See https://docs.docker.com/engine/reference/commandline/login/#credentials-store
By default, Docker stores the login password unencrypted within the
/root/.docker/config.json Docker configuration file. This is the default Docker behavior.
Resolving the problem
You can store your user credentials in an external credentials store instead of within the Docker configuration file. Storing your credentials in a credentials store is more secure than storing the credentials in the Docker configuration file. For more information, see the Docker community credentials store documentation .