Prefer exposing secrets as mounted files rather than environment variables

Cómo se verifica

Método de auditoría: Comando de shell

out=$(kubectl get pods -A -o go-template='{{range .items}}{{$ns:=.metadata.namespace}}{{$p:=.metadata.name}}{{range .spec.containers}}{{$c:=.name}}{{range .env}}{{if .valueFrom}}{{if .valueFrom.secretKeyRef}}{{$ns}} {{$p}} {{$c}} env{{"\n"}}{{end}}{{end}}{{end}}{{range .envFrom}}{{if .secretRef}}{{$ns}} {{$p}} {{$c}} envFrom{{"\n"}}{{end}}{{end}}{{end}}{{range .spec.initContainers}}{{$c:=.name}}{{range .env}}{{if .valueFrom}}{{if .valueFrom.secretKeyRef}}{{$ns}} {{$p}} {{$c}} env{{"\n"}}{{end}}{{end}}{{end}}{{range .envFrom}}{{if .secretRef}}{{$ns}} {{$p}} {{$c}} envFrom{{"\n"}}{{end}}{{end}}{{end}}{{end}}') || exit 1
bad=$(printf '%s\n' "$out" | awk -v ex='^(kube-system|kube-public|kube-node-lease)$' 'NF && $1 !~ ex && (1)')
if [ -z "$bad" ]; then echo compliant; else printf '%s\n' "$bad" | head -n 25; fi

Salida esperada

compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Update workloads to consume secrets as mounted files instead of environment variables. Replace env[].valueFrom.secretKeyRef and envFrom[].secretRef usage with Kubernetes Secret volumes or the OCI Secrets Store CSI Driver Provider with the Secrets Store CSI Driver, then update the application to read the secret from the mounted file path. This reduces the chance of secret values appearing in logs and aligns with the OCI Vault based file delivery pattern for OKE workloads. Replace secret environment variables with mounted secret files and update the application to read from the mounted path.

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

tmaegis scan --target oke