Prometheus-proxy for Lens

apiVersion: v1
kind: Service
metadata:
  name: prometheus-proxy
  namespace: x-ion-addons
spec:
  selector:
    app: prom-reverse-proxy
  ports:
    - name: prometheus
      port: 9090
      protocol: TCP
      targetPort: 9090
  sessionAffinity: None
  type: ClusterIP

---
kind: Deployment
apiVersion: apps/v1
metadata:
  name: prometheus-proxy
  namespace: x-ion-addons
spec:
  replicas: 1
  selector:
    matchLabels:
      app: prom-reverse-proxy
  strategy:
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
    type: RollingUpdate
  template:
    metadata:
      labels:
        app: prom-reverse-proxy
    spec:
      containers:
        - image: registry.gitlab.x-ion.de/paas-public/mirror/nginx:1.19.3
          imagePullPolicy: IfNotPresent
          name: nginx
          ports:
            - name: prometheus
              containerPort: 9090
          readinessProbe:
            httpGet:
              path: /-/ready
              port: prometheus
            timeoutSeconds: 10
          livenessProbe:
            httpGet:
              path: /-/healthy
              port: prometheus
            timeoutSeconds: 10
          startupProbe:
            httpGet:
              path: /-/healthy
              port: prometheus
            failureThreshold: 30
            periodSeconds: 10
          resources:
            requests:
              cpu: 50m
              memory: 50Mi
            limits:
              cpu: 100m
              memory: 150Mi
          volumeMounts:
            - name: config
              mountPath: /etc/nginx
              subPath: nginx.config
              readOnly: true
      initContainers:
        - command:
            - /bin/sh
            - -c
            - |
              cat <<EOM > /tmp/nginx/nginx.conf
              events {
                worker_connections  1024;  ## Default: 1024
              }
              http {
                access_log /dev/stderr;
                server {
                  listen 0.0.0.0:9090;
                  location / {
                    proxy_pass http://192.168.0.20:9090/;
                  }
                }
              }
              EOM
          image: registry.gitlab.x-ion.de/paas-public/mirror/busybox:1.32.0
          name: config-builder
          volumeMounts:
            - name: config
              mountPath: /tmp/nginx
              subPath: nginx.config
              readOnly: false
      restartPolicy: Always
      volumes:
        - name: config
          emptyDir: {}