Introduction to Cloud-Native Kubernetes Security Best Practices>
– admin
1.
Leverage Kubernetes Role-Based Access Controls (RBAC): Kubernetes RBAC allows you to control who can access and manage resources in your Kubernetes cluster.
You can set up permission and authorization policies to determine where, who, and what a user can access.
2.
Harden Your Control Plane: The Kubernetes control plane should be secured against malicious actors and potential attacks.
Regularly update the cluster’s components, tighten the network security posture, and configure secure channels for communication.
3.
Secure Container Images: Before running them in production, ensure all container images are securely imported and deployed.
Use a trusted registry and ensure that the image is up to date, non-malicious, and not vulnerable to any known exploits.
4.
Lint Kubernetes Configurations: Proper configuration of all components in a Kubernetes cluster is key to security.
Linting tools can be used to verify the syntax of Kubernetes YAML files.
It will help to identify configuration errors in the Kubernetes environment.
5.
Monitor The Cluster: Monitor the cluster to detect any suspicious activities or anomalies.
This can be done through log analysis with a SIEM system, or using open source projects like Spinnaker, Prometheus, Grafana, etc.
Setting up alerting and notifications will help to keep track of any changes in the Kubernetes environment.
6.
Use Network Security Solutions: Configure network policies to restrict communication within a Kubernetes cluster and between clusters.
Segment parts of your clusters using virtual networks and use a service mesh to securely manage the traffic within the clusters.
7.
Restrict Access to Nodes: Configure and use network and host-based firewalls to restrict access to nodes and the sensitive information stored in persistent data stores.
Only allow legitimate and authorized connections to the nodes using whitelisting and secure authentication protocols.
8.
Harden Nodes: Run a tool like Trivy or Anchore to check for any known exploits in the node’s operating system.
Secure the node with a firewall, frequently patch the node, secure open ports, and use trusted authentication protocols when accessing the nodes.
Link: https://xaralite.com/2023/06/29/introduction-to-cloud-native-kubernetes-security-best-practices/