Write below binary dir
Event Information
Meaning
- The “Write below binary dir” event in a Kubernetes cluster indicates that a process running within a container attempted to write or modify files within the binary directory of the container’s file system.
- This event could potentially indicate a malicious activity or a misconfiguration, as modifying files within the binary directory can lead to unauthorized changes to the container’s executable files.
- To investigate this event, you can use the following steps:
- Identify the specific container and pod where the event occurred using the metadata provided in the event.
- Inspect the container’s file system using the
kubectl exec
command to check for any unauthorized modifications or suspicious files within the binary directory. - Review the container’s configuration and deployment files to ensure that the appropriate security measures are in place, such as read-only file systems or proper file permissions, to prevent unauthorized modifications.
Remediation
- Create a Kubernetes Deployment manifest file with the necessary specifications for the Python application:
apiVersion: apps/v1
kind: Deployment
metadata:
name: python-app
spec:
replicas: 1
selector:
matchLabels:
app: python-app
template:
metadata:
labels:
app: python-app
spec:
containers:
- name: python-app
image: <your-python-image>
command: ["python", "/path/to/your/script.py"]
volumeMounts:
- name: shared-data
mountPath: /path/to/binary/dir
volumes:
- name: shared-data
emptyDir: {}
- Apply the Deployment manifest using the
kubectl apply
command:
kubectl apply -f deployment.yaml
- Verify that the Deployment is running and the Python application is writing to the desired binary directory:
kubectl get pods
kubectl logs <pod-name>
Note: Replace <your-python-image>
with the appropriate Python image and /path/to/your/script.py
with the actual path to your Python script.