k3s/scripts/hardened/hardened-k3s-ingress.yaml

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apiVersion: apps/v1
kind: DaemonSet
metadata:
name: example
namespace: default
labels:
app.kubernetes.io: example
spec:
selector:
matchLabels:
app.kubernetes.io/name: example
template:
metadata:
labels:
app.kubernetes.io/name: example
spec:
automountServiceAccountToken: false
securityContext:
runAsUser: 405
runAsGroup: 100
containers:
- name: socat
image: docker.io/alpine/socat:1.7.4.3-r1
args:
- "TCP-LISTEN:8080,reuseaddr,fork"
- "EXEC:echo -e 'HTTP/1.1 200 OK\r\nConnection: close\r\n\r\n$(NODE_IP) $(POD_NAMESPACE)/$(POD_NAME)\r\n'"
ports:
- containerPort: 8080
name: http
env:
- name: NODE_IP
valueFrom:
fieldRef:
fieldPath: status.hostIP
- name: POD_NAMESPACE
valueFrom:
fieldRef:
fieldPath: metadata.namespace
- name: POD_NAME
valueFrom:
fieldRef:
fieldPath: metadata.name
readinessProbe:
initialDelaySeconds: 2
periodSeconds: 10
httpGet:
path: /
port: 8080
---
apiVersion: v1
kind: Service
metadata:
name: example
namespace: default
spec:
type: NodePort
selector:
app.kubernetes.io/name: example
ports:
- name: http
protocol: TCP
port: 80
nodePort: 30096
targetPort: http
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: example
spec:
rules:
- host: "example.com"
http:
paths:
- pathType: Prefix
path: "/"
backend:
service:
name: example
port:
name: http
---
# Allow access to example backend from traefik ingress
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: ingress-to-backend-example
namespace: default
spec:
podSelector:
matchLabels:
app.kubernetes.io/name: example
ingress:
- ports:
- port: 8080
protocol: TCP
- from:
- namespaceSelector:
matchLabels:
kubernetes.io/metadata.name: kube-system
podSelector:
matchLabels:
app.kubernetes.io/name: traefik
policyTypes:
- Ingress
---
# Allow access to example backend from outside the cluster via nodeport service
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: nodeport-to-backend-example
namespace: default
spec:
podSelector:
matchLabels:
app.kubernetes.io/name: example
ingress:
- ports:
- port: 8080
protocol: TCP
- from:
- ipBlock:
cidr: 0.0.0.0/0
except:
- 10.42.0.0/16
- 10.43.0.0/16
policyTypes:
- Ingress