Kubernetes proxy-logger using nginx to log requests to a json file

proxy-logger.yaml

# This proxy can help you understand what requests a container is making.
# You'll need to point that container to this and this to what ever the container really wanted to make the request to.
# Alternatives to this are to use a system proxy/service mesh (istio)
# kubectl logs deployments/proxy-logger --tail -1|grep {|jq -r .request_query
# a use vscode extension to decode querystrings: https://marketplace.visualstudio.com/items?itemName=sryze.uridecode
# to use that, pipe the output to a file and then use that extension to decode uri as URI Component
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: proxy-logger
  labels:
    app: proxy-logger
spec:
  replicas: 1
  selector:
    matchLabels:
      app: proxy-logger
  template:
    metadata:
      labels:
        app: proxy-logger
    spec:
      containers:
      - name: proxy-logger
        image: nginxinc/nginx-unprivileged
        ports:
          - containerPort: 8080
            protocol: TCP
        resources: {}
        imagePullPolicy: IfNotPresent
        volumeMounts:
        - mountPath: /etc/nginx/conf.d
          name: default-conf
          readOnly: true
      volumes:
      - name: tmp
        emptyDir: {}
      - name: default-conf
        configMap:
          name: nginx-config
          items:
            - key: default.conf
              path: default.conf
---
apiVersion: v1
kind: Service
metadata:
  name: proxy-logger
spec:
  ports:
    - name: proxy-logger
      protocol: TCP
      port: 8080
      targetPort: 8080
  selector:
    app: proxy-logger
  type: ClusterIP
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-config
data:
  default.conf: |
    log_format json_analytics escape=json '{"time": "$time_iso8601", "remote_addr": "$proxy_protocol_addr","x_forwarded_for": "$proxy_add_x_forwarded_for", "remote_user": "$remote_user", "bytes_sent": $bytes_sent, "request_time": $request_time, "status": $status, "vhost": "$host", "request_proto": "$server_protocol", "path": "$uri",  "request_query": "$args", "request_length": $request_length, "duration": $request_time,"method": "$request_method", "http_referrer": "$http_referer", "http_user_agent": "$http_user_agent"}';
    server {
        listen 8080;
        location / {
            # normal k8s logging:
            access_log /dev/stdout json_analytics;
            # or log to a file:
            # access_log /tmp/proxy-logs.json json_analytics;
            proxy_pass http://proxied-host$request_uri;
            # proxy_pass http://amp/workspaces/ws-XXX-XXX-XXX-XXX$request_uri;
        }

    }
    upstream proxied-host {
      server prometheus-operator-kube-p-prometheus.monitoring:9090;
    }