The invention provides a method, device and
system for performing
authentication and authority management on a user using a container management cluster, and a medium. The method comprises the following steps: a registration step: sending a registration request to the container management cluster, and storing a service account and
authentication information created by the container management cluster for the user; a login step: responding to a login request, taking out
authentication information of the user, and authenticating whether the user successfully logs in according to the
authentication information by the container management cluster; an
authorization step: after determining that the user has successfully logged in, creating one or more items for an
authorization request of the user, storing a
namespace created by the container management cluster, and sending the service account and space of the user to the container management cluster for
authorization; and an authenticationstep: responding to an operation request, taking out namespaces in one-to-one correspondence with items in the operation request, and authenticating the operation request by the container management
cluster based on an authorization result of the service account and the namespaces.