A cluster can be used for different environments and different purposes: it can have services for several production products and even for a variety of purposes: testing, staging, production, and so on. It is important to separate these into different namespaces, so you can control access to the resources the service has access to. Namespaces create a network layer with resources within the same space.Production environments should always be in a separate cluster with strict access permissions. Nevertheless, for other environments, it is possible to create roles for each namespace so only your QA team can access the testing environment.
The APIs are the central interfaces for administrators, users, and applications to operate and communicate in the Kubernetes environment. For that reason, controlling API access is the main task of authentication and authorization within Kubernetes.The Kubernetes platform has built authentication and authorization controls and admission controls, which intercept and regulate requests to the APIs after authentication and authorization.
Security As A Service
Every type of software contains bugs. Related to security, malicious people around the world are constantly trying to find the next breach in popular software. It is a cat-and-mouse situation as security issues are explored, discovered, and solved while a new one will pop up in a few days. It is the cluster operator’s responsibility to keep all software running on the cluster updated so major flaws are repaired before they’ve been exploited.
Most organizations use open-source components to build applications and they also use prebuilt images for their containers. Once you pull down images from a public hub, which are not validated and signed, you create an open space for untrusted content.
So, in order to protect your container, we recommend using private or official registries, maintaining standard base images for developers to use, and scanning images for security vulnerabilities
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