Question
How To Secure Access To Cluster
- Posted on August 30, 2023
- SecurityDigitalOcean Managed KubernetesFirewallKubernetes
Asked by Artem Brezhnev
Hi there,
We use Kubernetes Managed Kubernetes, and became recently concerned about the potential security vulnerability.
Access to the cluster is granted with the “kubeconfig” which contains Kubernetes API token. So the only thing it takes for anyone to get access to the entire cluster and application environment is to get content from that file.
Is there a recommended way of handling this problem? Is it possible to restrict access behind a firewall, or disable root type of access and use a solution like Teleport?
Please share your experience.
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Hi there,
A quick update here in case that anyone comes across this in the future.
DigitalOcean has just announced that Control plane firewalls are now available in Early Availability.
The feature improves security and traffic for your cluster. Once enabled, only configured IP addresses, cluster worker nodes and workloads, and internal systems that manage the cluster (such as cluster upgrades) can access the control plane.
Existing open connections continue to work until they terminate. However, for
WATCHrequests, the API server enforces a maximum of 30 minutes for terminating the open connection.For more information, see How to Add a Control Plane Firewall.
- Bobby
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