# Scaling Zammad in K8s

**URL:** https://community.zammad.org/t/scaling-zammad-in-k8s/19775
**Category:** Technical assistance
**Created:** [March 10, 2026, 9:24am UTC](https://community.zammad.org/t/scaling-zammad-in-k8s/19775 "2026-03-10T09:24:00Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![minhman1504](https://community.zammad.org/letter_avatar_proxy/v4/letter/m/ee59a6/32.png) [@minhman1504](https://community.zammad.org/u/minhman1504)
#### Post date: [March 10, 2026, 9:24am UTC](https://community.zammad.org/t/scaling-zammad-in-k8s/19775/1 "2026-03-10T09:24:00Z")

</div>

Title: [Helm Chart 15.6.0 or newer] Can we scale zammad-scheduler + zammad-websocket, does zammad-railsserver support auto-scaling, and can zammad-nginx autoscale?

### Infos:

- Used Zammad version: 6.5.1
- Used Zammad installation type: Helm Chart - 15.6.0
- Operating system: Kubernetes - v1.31.4
- Browser + version: Google Chrome - Version 145.0.7632.160 (Official Build) (arm64)

### Expected behavior:

- Confirm whether the Helm deployment supports **horizontal scaling / autoscaling (HPA)** for these components:
  - `zammad-scheduler`: can/should it run with replicas \> 1, or must it be a singleton to avoid duplicate jobs?
  - `zammad-websocket`: can it be scaled to multiple replicas behind a Service/Ingress, and are sticky sessions / special LB settings required?
  - `zammad-railsserver`: can it run with multiple replicas and be managed by HPA, and are there constraints (sessions, cache/Redis, DB connections, shared storage) to be aware of?
  - `zammad-nginx`: can it be run with multiple replicas and autoscaled via HPA safely (stateless), and are there any recommended resource/connection settings when scaling?

### Actual behavior:

- We haven’t changed replicas yet because we’re not sure what is supported.
- Our goal is to handle higher traffic and want to know the correct scaling approach for these components in Kubernetes.

### Steps to reproduce the behavior:

- Deploy Zammad via Helm Chart 15.6.0 on Kubernetes.
- Consider increasing replicas / enabling HPA for:
  - `zammad-scheduler`
  - `zammad-websocket`
  - `zammad-railsserver`
  - `zammad-nginx`

- Before applying changes in production, we want guidance on what is safe/supported and any required configuration.  
 ![image](https://community.zammad.org/uploads/default/original/2X/f/fd8a470d878d725317ef7b3fb67990d10d13abb2.png)