Conftest对于有效的Kubernetts YAML文件失败

Question

我有以下简单的Kubernetes YAML部署：

apiVersion: apps/v1
kind: Deployment
metadata:
name: {{ .Values.app.name }}
namespace: {{ .Values.app.namespace }}
spec:
selector:
matchLabels:
app: {{ .Values.app.name }}
replicas: 1
template:
metadata:
labels:
app: {{ .Values.app.name }}
spec:
securityContext:
runAsUser: 1000
runAsGroup: 3000
fsGroup: 2000
containers:
- name: {{ .Values.app.name }}
image: {{ .Values.plantSimulatorService.image.repository }}:{{ .Values.plantSimulatorService.image.tag }}
ports:
- containerPort: {{ .Values.plantSimulatorService.ports.containerPort }} # Get this value from ConfigMap

我的测试中有以下内容

package main
import data.kubernetes
name = input.metadata.name
deny[msg] {
kubernetes.is_deployment
not input.spec.template.spec.securityContext.runAsNonRoot
msg = sprintf("Containers must not run as root in Deployment %s", [name])
}

当我使用以下命令运行此程序时：

joesan@joesan-InfinityBook-S-14-v5:~/Projects/Private/infrastructure-projects/plant-simulator-deployment$ helm conftest helm-k8s -p test
WARN - Found service plant-simulator-service but services are not allowed
WARN - Found service plant-simulator-grafana but services are not allowed
WARN - Found service plant-simulator-prometheus but services are not allowed
FAIL - Containers must not run as root in Deployment plant-simulator
FAIL - Deployment plant-simulator must provide app/release labels for pod selectors

正如你所看到的，我确实没有以root身份运行容器，但尽管如此，我还是收到了这个错误消息——容器不能在部署工厂模拟器中以root身份操作

你知道原因是什么吗？

Answer 1

您需要将runAsNonRoot添加到您的安全上下文：

securityContext:
runAsUser: 1000
runAsGroup: 3000
fsGroup: 2000
runAsNonRoot: true

rego规则只能验证Yaml结构——它还不够聪明，无法确定您的配置是否有效地运行了非root用户。