How to prevent my RabbitMQ pod from autoscaling and restarting - amazon-web-services

Question

apiVersion: helm.toolkit.fluxcd.io/v2beta1
kind: HelmRelease
metadata:
name: rabbitmq
namespace: staging
spec:
chart:
spec:
chart: rabbitmq
sourceRef:
kind: HelmRepository
name: bitnami
namespace: kube-system
version: "8.22.3"
interval: 5m
releaseName: rabbitmq
values:
priorityClassName: system-node-critical
replicaCount: 4
auth:
username: staging
password: rabbitmq-secret
existingPasswordSecret: rabbitmq-secret
erlangCookie: **************************
extraConfiguration: |-
default_vhost=use2-mmc-1021
consumer_timeout=86400000
memoryHighWatermark:
enabled: "true"
type: absolute
value: 1536MB
resources:
limits:
cpu: 500m
memory: 2048Mi
requests:
cpu: 500m
memory: 2048Mi
livenessProbe:
initialDelaySeconds: 120
timeoutSeconds: 20
periodSeconds: 30
failureThreshold: 6
successThreshold: 1
readinessProbe:
initialDelaySeconds: 10
timeoutSeconds: 20
periodSeconds: 30
failureThreshold: 3
successThreshold: 1
service:
type: ClusterIP
serviceAccount:
create: true
This is my code for rabbitmq.yaml file.
I want to prevent my pod from restarting , as restarting the pod takes some time which results in server errors.
cluster autoscaler should not affect my rabbitmq pod.
i've already tried using system-node-critical in my code , it didn't make any difference.
please help me out with some answers to my problem.
cluster autoscaler should not affect my rabbitmq pod or how to make my pod as System-node-critical.