I am currently seeing a strange issue where I have a Pod that is constantly being Evicted by Kubernetes.

My Cluster / App Information:

• Node size: 7.5GB RAM / 2vCPU
• Application Language: nodejs
• Use Case: puppeteer website extraction (I have code that loads a website, then extracts an element and repeats this a couple of times per hour)
• Running on Azure Kubernetes Service (AKS)

What I tried:

• Check if Puppeteer is closed correctly and that I am removing any chrome instances. After adding a force killer it seems to be doing this

• Checked kubectl get events where it is showing the lines:

8m17s       Normal    NodeHasSufficientMemory   node/node-1              Node node-1 status is now: NodeHasSufficientMemory
2m28s       Warning   EvictionThresholdMet      node/node-1              Attempting to reclaim memory
71m         Warning   FailedScheduling          pod/my-deployment     0/4 nodes are available: 1 node(s) had taint {node.kubernetes.io/memory-pressure: }, that the pod didn't tolerate, 3 node(s) didn't match node selector

• Checked kubectl top pods where it shows it was only utilizing ~30% of the node's memory
• Added resource limits in my kubernetes .yaml:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app-d
spec:
  replicas: 1
  template:
    spec:
      containers:
      - name: main
        image: my-image
        imagePullPolicy: Always
        resources:
          limits: 
            memory: "2Gi"

Current way of thinking:

A node has X memory total available, however from X memory only Y is actually allocatable due to reserved space. However when running os.totalmem() in node.js I am still able to see that Node is allowed to allocate the X memory.

What I am thinking here is that Node.js is allocating up to X due to its Garbage Collecting which should actually kick in at Y instead of X. However with my limit I actually expected it to see the limit instead of the K8S Node memory limit.

Question

Are there any other things I should try to resolve this? Did anyone have this before?