[BUG] High CPU usage at random moments

Begin with the linked issue 536 and collect container logs during a recurrence using the provided k3s manifest or Docker equivalent. Done means identifying a reproducible trigger or cause for the CPU spike and validating a fix that keeps Nextcloud available.

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

Hello, this is a recreation of the very similar bug report link.

I have not seen the errors in the logfiles and unfortunately I can't recheck them. But the symptoms are the same as in the before mentioned tickets just at random times.

I've had it occur twice over the past 5 days, the container just randomly starts using a lot of CPU resources and Nextcloud becomes unavailable. The only thing that seems to resolve it is restarting the container.

Example of the CPU spike on the server in question:

Expected Behavior

No CPU usage spike and application remaining available.

Steps To Reproduce

It seems to be happening randomly.

Environment

OS: 
Ubuntu 24.04.4 LTS

Image: 
lscr.io/linuxserver/nextcloud:33.0.3-ls428

Environment:
k3s (previously experienced the exact configuration in docker as well)

CPU architecture

x86-64

Docker creation

k3s manifest:
: apps/v1
kind: Deployment
metadata:
  name: nextcloud
  namespace: cloud
spec:
  replicas: 1
  selector:
    matchLabels:
      app: nextcloud
  template:
    metadata:
      labels:
        app: nextcloud
    spec:
      containers:
        - name: nextcloud
          image: lscr.io/linuxserver/nextcloud:33.0.3-ls428
          ports:
            - containerPort: 80
          envFrom:
            - secretRef:
                name: cloud-nextcloud
          volumeMounts:
            - name: config
              mountPath: /config
            - name: custom-apps
              mountPath: /app/www/public/custom_apps
            - name: documents
              mountPath: /documents
            - name: pictures
              mountPath: /pictures
            - name: games
              mountPath: /games
            - name: it
              mountPath: /IT
            - name: ebooks
              mountPath: /ebooks
            - name: data
              mountPath: /data


Which is the k3s equivalent of this docker-compose snippet:

  nextcloud:
    image: lscr.io/linuxserver/nextcloud:33.0.3-ls428
    healthcheck:
      test: ["CMD", "curl", "https://wolkje.heijlond.com/index.php/login"]
      timeout: 2s
      interval: 30s
      retries: 1
    environment:
      - PUID=2008
      - PGID=2008
      - TZ=Europe/London
    depends_on:
      - redis
    volumes:
<same mounts>

Container logs

I am working on a way of saving logs to be able to check/paste them. But the previous bug report linked contains logs etc.