> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/appsec-rules/iac-security/iam/appsec-k8s-121.md).

# The --peer-client-cert-auth argument is not set to True misconfiguration detected in code

## Rule Details

|                        |                                       |
| ---------------------- | ------------------------------------- |
| Cortex AppSec Rule ID  | APPSEC\_K8S\_121                      |
| Category - Subcategory | Kubernetes - Native Security Controls |
| Provider               | OTHER                                 |
| Severity               | HIGH                                  |
| Framework              | Helm, Kubernetes, Kustomize           |

## Impact

etcd should be configured for peer authentication. etcd is a highly-available key value store used by Kubernetes deployments for persistent storage of all of its REST API objects. These objects are sensitive in nature and should be accessible only by authenticated etcd peers in the etcd cluster.

## How to Fix

## *Kind:* Pod \[source,go]

{ "apiVersion: v1 kind: Pod metadata: name: etcd namespace: should-pass spec: hostNetwork: true containers:

* name: "kuku2" image: "b.gcr.io/kuar/etcd:2.2.0" args: ...
* * "--peer-client-cert-auth=true" ...", }

***


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