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Kubernetes Incident Response Best Practices Checklist
Incident response is the process of managing an emergency situation and returning the organization to its normal state. The goal of incident response is to protect people, data, systems, and reputation.
You can get a playbook on how to respond to security incidents in Kubernetes environments here.
Kubernetes is a platform for deploying and managing containerized applications. Kubernetes is open source and managed by the Cloud Native Computing Foundation. Kubernetes is used by large organizations such as Google, Facebook, and Netflix.
A Kubernetes incident can have a significant impact on an organization. The goal of incident response is to protect people, data, systems, and reputation.
The first step in responding to a Kubernetes incident is to determine the impact of the incident. The impact of the incident will determine the response.
The next step is to determine the cause of the incident. The cause of the incident will help determine the response.
The next step is to determine the scope of the incident. The scope of the incident will help determine the response.
The next step is to determine the priority of the incident. The priority of the incident will help determine the response.
The next step is to determine the resources required to respond to the incident. The resources required to respond to the incident will help determine the response.
The next step is to determine the response. The response will depend on the impact, cause, and scope of the incident.
The following are the steps for responding to a Kubernetes incident:
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Determine the impact of the incident.
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Determine the cause of the incident.
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Determine the scope of the incident.
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Determine the priority of the incident.
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Determine the resources required to respond to the incident.
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Determine the response.
Kubernetes is a powerful system for managing containerized applications, but it is also complex and can be difficult to configure and use correctly. This complexity can make it difficult to determine if a Kubernetes installation has been compromised.
There are a few key things to look for when trying to determine if a Kubernetes installation has been compromised:
Are containers being created or deleted unexpectedly?
Are there unexpected network connections between containers?
Are there unexpected pod deployments?
Are there unexpected services being created?
If you suspect that your Kubernetes installation has been compromised, the first step is to isolate the cluster. This can be done by disabling Kubernetes API access and deleting all Pods, Services, and Deployments.
Once the cluster has been isolated, you can start to investigate the suspected breach. One way to do this is to examine the logs for any suspicious activity. You can also use a tool like Kube-hunter to help you find malicious activity in your Kubernetes installation.
If you determine that your Kubernetes installation has been compromised, you will need to take corrective action to secure it. This may include upgrading to the latest version of Kubernetes, patching vulnerable systems, or rebuilding the cluster from scratch.
Regardless of the corrective action you take, it is important to remember that security is a process, not a destination. You should always be vigilant in monitoring your Kubernetes installation for signs of compromise and take corrective action as needed.
Forensics on a compromised Kubernetes cluster can be a daunting task. However, by following a few simple steps, it can be made much easier.
The first step is to identify which nodes in the cluster are compromised. This can be done by running the following command on a healthy node in the cluster:
kubectl get nodes
This will return a list of all nodes in the cluster, including the status of each node. The status can be one of the following:
Ready
NotReady
Unknown
The nodes that are in the Unknown status are the ones that may be compromised.
Once the compromised nodes have been identified, the next step is to determine which pods are running on those nodes. This can be done by running the following command on a healthy node in the cluster:
kubectl get pods
This will return a list of all pods in the cluster, including the status of each pod. The status can be one of the following:
Running
Paused
Completed
Failed
The pods that are in the Failed or Paused status are the ones that may be compromised.
Once the compromised pods have been identified, the next step is to determine what the compromised pods are doing. This can be done by running the following command on a healthy node in the cluster:
kubectl logs
This will return the logs for the given pod.
If the logs are not available, another way to determine what the compromised pod is doing is to run the following command on a healthy node in the cluster:
kubectl describe
This will return the description of the given pod.
If the logs or description are not available, the last resort is to do a network dump of the traffic going to and from the compromised pod. This can be done by running the following command on a healthy node in the cluster:
kubectl port-forward :
This will forward the traffic for the given pod to the local port on the machine.
Finally - You can grab a full copy of a container to review logs.