Skip to main content

Question - Audit

Question: Enable auditing in this kubernetes cluster. Create a new audit policy file that will only log events based on the details:

  • Namespace: test
  • Level: metadata
  • Operations: delete & update
  • Resources: pods
  • Log Path: /var/log/test-audit.log
  • Audit file location: /etc/kubernetes/test-audit.yaml
  • Maximum days to keep the logs: 20

Solution​

1 - Create the audit file​

#Create audit file in /etc/kubernetes/test-audit.yaml

apiVersion: audit.k8s.io/v1
kind: Policy
rules:
- level: Metadata ## level of verbosity
  namespace: ["test"] ## ensure to use correct namespace
  verb: ["delete","update"] ## correct operations specified?
  resources:
  - group: ""
    resource: ["pods"] ## correct resource specified?

2 - Enable auditing in the kube-api server​

- --audit-policy-file=/etc/kubernetes/test-audit.yaml ## ensure correct audit policy file is specified
- --audit-log-path=/var/log/test-audit.log ## log path
- --audit-log-maxage=20 ## max days to keep the log

3 - Add the volumes and volume mounts in the kube-api server​

volumes:
  - name: audit
    hostPath:
      path: /etc/kubernetes/test-audit.yaml
      type: File
  - name: audit-log
    hostPath:
      path: /var/log/test-audit.log
      type: FileOrCreate
volumeMounts:
  - mountPath: /etc/kubernetes/test-audit.yaml
    name: audit
    readOnly: true
  - mountPath: /var/log/test-audit.log
    name: audit-log
    readOnly: false

## ensure correct volumes paths are mounted
  • After exiting the kube-api server manifest, give it a moment for the server to restart and for changes to take effect.