Memory leak?

[dcherniv]

It appears that exporter is consuming quite a lot of memory.

Sharp dropoff in the graph is the OOMKilled events from kubernetes.
Exporter is configured as follows and appears to be working fine otherwise. It's running as a side-car to the pgbouncer.

  - args:
    - --config
    - /home/REDACTED/exporter.yaml
    command:
    - pgbouncer-exporter
    env:
    - name: PGBOUNCER_USER
      valueFrom:
        secretKeyRef:
          key: exporter_user
          name: prod-REDACTED-pgbouncer
    - name: PGBOUNCER_PASS
      valueFrom:
        secretKeyRef:
          key: exporter_password
          name: prod-REDACTED-pgbouncer
    image: REDACTED-pgbouncer:0.1.3   
    imagePullPolicy: Always
    livenessProbe:
      failureThreshold: 2
      httpGet:
        path: /
        port: exporter
        scheme: HTTP
      periodSeconds: 3
      successThreshold: 1
      timeoutSeconds: 3
    name: pgbouncer-exporter
    ports:
    - containerPort: 9100
      name: exporter
      protocol: TCP
    readinessProbe:
      failureThreshold: 1
      httpGet:
        path: /
        port: exporter
        scheme: HTTP
      periodSeconds: 3
      successThreshold: 1
      timeoutSeconds: 3
    resources:
      limits:
        cpu: 200m
        memory: 256Mi
      requests:
        cpu: 50m
        memory: 128Mi

config file (exporter.yaml):

/home/REDACTED $ cat /home/REDACTED/exporter.yaml 
exporter_host: 0.0.0.0
exporter_port: 9100
pgbouncers:
  - dsn: postgresql://$(PGBOUNCER_USER):$(PGBOUNCER_PASS)@localhost:5432/pgbouncer
    connect_timeout: 5
    exclude_databases:
      - pgbouncer

invocation:

/home/REDACTED $ ps auxwww
PID   USER     TIME  COMMAND
    1 postgres  2:08 {pgbouncer-expor} /usr/bin/python3.7 /usr/bin/pgbouncer-exporter --config /home/REDACTED/exporter.yaml
21616 postgres  0:00 /bin/sh
21622 postgres  0:00 ps auxw
/home/REDACTED $ 

logs:

r$ kubectl logs -n prod prod-REDACTED pgbouncer-exporter
{"asctime": "2019-12-24 01:08:46", "levelname": "INFO", "message": "Exporter is starting up"}
{"asctime": "2019-12-24 01:08:46", "levelname": "INFO", "message": "Config file successfully read from /home/REDACTED/exporter.yaml"}
{"asctime": "2019-12-24 01:08:46", "levelname": "INFO", "message": "Exporter listening on 0.0.0.0:9100"}
r$ 

How much memory does it require?

[pracucci]

I would say it definitely looks to be a memory leak in the exporter. Do you have any time to investigate it, please?