# Non-high availability setup

## Overview

The recommended Kubernetes/OpenShift deployment of StackState is a production ready setup with many services running redundantly. If required, it's also possible to run StackState in a non-redundant setup, where each service has only a single replica.

{% hint style="info" %}
The non-high availability setup is only suitable for situations that don't require high availability.
{% endhint %}

## Create `nonha_values.yaml`

To deploy StackState in a non-high availability setup, you will need a `nonha_values.yaml` file. Follow the instructions below to create this file and use it for deployment of StackState.

1. Create a Helm values file `nonha_values.yaml` with the following content and store it next to the generated `values.yaml` file:

```yaml
# This files defines additional Helm values to run StackState on a 
# non-high availability production setup. Use this file in combination
# with a regular values.yaml file that contains your API key, etc.
elasticsearch:
  minimumMasterNodes: 1
  replicas: 1

hbase:
  hbase:
    master:
      replicaCount: 1
    regionserver:
      replicaCount: 1
  hdfs:
    datanode:
      replicaCount: 1
    secondarynamenode:
      enabled: false
  tephra:
    replicaCount: 1

kafka:
  replicaCount: 1
  defaultReplicationFactor: 1
  offsetsTopicReplicationFactor: 1
  transactionStateLogReplicationFactor: 1
stackstate:
  components:
    ui:
      replicaCount: 1
victoria-metrics-1:
  enabled: false
zookeeper:
  replicaCount: 1
clickhouse:
  replicaCount: 1
```

2. Continue with the instructions to deploy StackState with Helm:
   * [Deploy on Kubernetes](https://archivedocs.stackstate.com/self-hosted-setup/install-stackstate/kubernetes_install#deploy-stackstate-with-helm).
   * [Deploy on OpenShift](https://archivedocs.stackstate.com/self-hosted-setup/install-stackstate/openshift_install#deploy-stackstate-with-helm).