Security in Kubernetes

Kubernetes provides many built-in security features to help you protect your cluster, and your applications. These include network policies, TLS for secure communication, secret management, RBAC, security context, and more.

Table of Contents

• Security in Kubernetes
  • Table of Contents
  • Why is Security Important in Kubernetes?
  • Creating Network Policies
  • Using RBAC
  • Security Limitations
  • Cheat Sheets

Why is Security Important in Kubernetes?

Security in Kubernetes is important to protect sensitive data, meet regulatory compliance, and ensure uninterrupted services.

Creating Network Policies

You can create Network Policies using the kubectl apply -f with a Network Policy YAML, or via the Kubernetes API.

Using RBAC

Role-Based Access Control (RBAC) in Kubernetes enables administrators to dynamically configure policies through the Kubernetes API.

Security Limitations

While Kubernetes provides many built-in security features, it is not a silver bullet and requires configuration and maintenance to ensure a secure environment.

Cheat Sheets

Name	Command
Create a Network Policy	kubectl apply -f networkpolicy.yaml
Get Network Policies	kubectl get networkpolicies
Describe a Network Policy	kubectl describe networkpolicy <NAME>
Delete a Network Policy	kubectl delete networkpolicy <NAME>
Create a Role	kubectl create role <NAME> --verb=<VERBS> --resource=<RESOURCES>
Create a RoleBinding	kubectl create rolebinding <NAME> --role=<ROLE_NAME> --user=<USER_NAME>
Get Roles	kubectl get roles
Get RoleBindings	kubectl get rolebindings
Describe a Role	kubectl describe role <NAME>
Describe a RoleBinding	kubectl describe rolebinding <NAME>
Delete a Role	kubectl delete role <NAME>
Delete a RoleBinding	kubectl delete rolebinding <NAME>