Intro to Kubernetes

Prompts and answers

• Which benefit of Kubernetes means that it can run anywhere on any type of infrastructure?
  highly portable
• Fill in the blank "Kubernetes is a _________ _____________ system".
  container orchestration
• What is the smallest deployable unit of computing you can create in Kubernetes?
  pod
• Which control plane component is a key/value store which contains data pertaining to the cluster and its current state?
  etcd
• Which worker node component is responsible for network communication within the cluster?
  kube-proxy
• Which Kubernetes component exposes pods and serves as an access point?
  service
• Which Kubernetes component can guarantee the availability of X number of pods?
  replicaset
• What Kubernetes component is used to define a desired state?
  deployments
• In a config file, you have just declared that you want 4 nginx pods. In which one of the 'required fields' has this been declared?
  spec
• The configuration file is for a deployment. In which one of the 'required fields' is this declared?
  kind
• The pods in this deployment will be exposed by a service. In the service configuration file, the target port was set to 80. What should you put as the 'containerPort'?
  80
• ...troubleshoot a pod by gathering some details about it?
  describe
• ...access the container's shell?
  exec
• ...check the status of running pods?
  get
• ...turn a defined configuration (YAML file) into a running process?
  apply
• Which best container security practice is used to regulate access to a Kubernetes cluster and its resources?
  RBAC
• What is used to define security policies at 3 levels?
  Pod Security Standards
• What enforces these policies?
  Pod Security Admission
• What Kubernetes object can be used to store sensitive information and should, therefore, be managed securely?
  Secret
• Can you master the basics of Kubernetes and retrieve the flag?
  THM{k8s_k3nno1ssarus}
• What apiVersion is used for the RoleBinding?
  rbac.authorization.k8s.io/v1