Guides

Ensure that the --peer-cert-file and --peer-key-file arguments are set as appropriate (etcd)

etcd should be configured to make use of TLS encryption for peer connections. etcd is a highly-available key value store used by Kubernetes deployments for persistent storage of all of its REST API objects. These objects are sensitive in nature and should be encrypted in transit and also amongst peers in the etcd clusters.

Suggest Edits

Risk Level: High
Cloud Entity: Pods
CloudGuard Rule ID: D9.K8S.IAM.15
Covered by Spectral: Yes
Category: Compute

GSL LOGIC

KubernetesPod where labels contain [value='etcd'] and namespace = 'kube-system' should have spec.containers with [(parsedArgs contain [key like 'peer-cert-file' ]) and (parsedArgs contain [key like 'peer-key-file' ])]

REMEDIATION

Follow the etcd service documentation and configure peer TLS encryption as appropriate
for your etcd cluster. Then, edit the etcd pod specification file $etcdconf on the
master node and set the below parameters.
--peer-client-file=</path/to/peer-cert-file>
--peer-key-file=</path/to/peer-key-file>

References

  1. https://coreos.com/etcd/docs/latest/op-guide/security.html
  2. https://kubernetes.io/docs/admin/etcd/

Pods

Pods are the smallest deployable units of computing that can be created and managed in Kubernetes.A Pod is a group of one or more containers (such as Docker containers), with shared storage/network, and a specification for how to run the containers.

Compliance Frameworks

  • CIS Kubernetes Benchmark v1.20
  • CIS Kubernetes Benchmark v1.23
  • CIS Kubernetes Benchmark v1.24
  • CIS Kubernetes Benchmark v1.4.0
  • CIS Kubernetes Benchmark v1.5.1
  • CIS Kubernetes Benchmark v1.6.1
  • Kubernetes NIST.SP.800-190
  • Kubernetes v.1.13 CloudGuard Best Practices
  • Kubernetes v.1.14 CloudGuard Best Practices

Updated over 1 year ago