Added EKS install docs and updated node version in docs build

.github/workflows/publish-docs-staging.yaml

@@ -26,7 +26,7 @@ jobs:
     - uses: actions/setup-node@v3
       name: Setup Node
       with:
-        node-version: 14.x
+        node-version: 20.x
     - run: npm install
     - run: npm run clean
     - run: npm run build:staging

.github/workflows/publish-docs.yaml

@@ -28,7 +28,7 @@ jobs:
     - uses: actions/setup-node@v3
       name: Setup Node
       with:
-        node-version: 14.x
+        node-version: 20.x
     - run: npm install
     - run: npm run clean
     - run: npm run build:production

docs/content/en/install/eks/_index.md

@@ -0,0 +1,197 @@
+---
+title: "Install K8ssandra on EKS"
+linkTitle: "Amazon EKS"
+weight: 2
+description: >
+  Complete **production** ready environment of K8ssandra on Amazon Elastic Kubernetes Service (EKS).
+---
+
+Amazon [Elastic Kubernetes Service](https://aws.amazon.com/eks/features/) or "EKS" is a managed Kubernetes service that makes it easy for you to run Kubernetes on AWS and on-premises. EKS is certified Kubernetes conformant, meaning that existing applications running on upstream Kubernetes are compatible with EKS. AWS automatically manages the availability and scalability of the Kubernetes control plane nodes responsible for key tasks such as scheduling containers, managing the availability of applications, and storing cluster data.
+
+{{% alert title="Tip" color="success" %}}
+Also available in followup topics are role-based considerations for [developers]({{< relref "/quickstarts/developer">}}) or [site reliability engineers]({{< relref "/quickstarts/site-reliability-engineer">}}) (SREs).
+{{% /alert %}}
+
+## Requirements
+
+1. [Amazon S3](https://aws.amazon.com/s3/) Bucket - Backups for K8ssandra are stored within an Amazon Simple Storage Service (S3) Bucket.
+1. [AWS Identity & Access Management](https://aws.amazon.com/iam/) (IAM) Role - This role is utilized by the EKS worker nodes to control access to the S3 bucket used for backups. See this [IAM policy](https://github.com/k8ssandra/k8ssandra-terraform/blob/ca5b1038d8cee003c0732d5c93ae06592e0a8535/aws/scripts/policy_document.json#L159-L190) as an example. _Note your policy should limit requests to specific buckets and operations._
+1. [Amazon EKS Cluster](https://aws.amazon.com/eks/) - Follow the [Amazon EKS Getting Started Guide](https://docs.aws.amazon.com/eks/latest/userguide/getting-started-console.html).
+   a. K8ssandra is tested with `Managed nodes - Linux` instances. `Fargate - Linux` _may_ work, but has not been validated or tested. If you are interested in support for Fargate, please [open an issue](https://github.com/k8ssandra/k8ssandra-operator/issues/new?assignees=&labels=enhancement&projects=&template=feature_request.md&title=Support+for+Fargate+on+EKS).
+   b. Specify the previously created IAM role for the worker nodes.
+1. [kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl/) installed and configured to access the cluster.
+1. _Optional_ [Helm](https://helm.sh/docs/intro/install/) installed and configured to access the cluster.
+1. _Optional_ [Kustomize](https://kubectl.docs.kubernetes.io/installation/kustomize/) installed and configured to access the cluster.
+
+## Infrastructure Considerations
+
+Apache Cassandra can be deployed across a variety of [hardware profiles](https://cassandra.apache.org/doc/latest/cassandra/operating/hardware.html). Consider the hardware requirements of Apache Cassandra when defining EKS node groups. Determine if you are planning on running a single Cassandra instance per node or multiple instances per node. If the decision is to run multiple instances per node, ensure that the node has enough resources to support the number of instances that you plan to run. For example, to run three  Cassandra instances per node, the node must have enough CPU, memory, and storage to support three Cassandra instances.
+
+## Dependencies
+
+1. [Cert Manager](https://cert-manager.io/docs/installation/kubernetes/) - Cert Manager provides a common API for management of Transport Layer Security (TLS) certificates. Cert Manager's interfaces communicate with a variety of Certificate Authority backends, including self-signed, Venafi, and Vault. K8ssandra Operator uses this API for certificates used by the various K8ssandra components.
+
+## Installation Type
+
+K8ssandra Operator may be deployed in one of two modes. `Control-Plane` mode is the default method of installation. A `Control-Plane` instance of K8ssandra Operator watches for the creation and changes to `K8ssandraCluster` custom resources. When `Control-Plane` is active Cassandra resources may be created within the local Kubernetes cluster **and / or** remote Kubernetes clusters (in the case of multi-region) deployments. When using K8ssandra Operator you must only have one instance running in `Control-Plane` mode. Kubernetes clusters acting as remote regions for Cassandra deployments should be run in `Data-Plane` mode. In `Data-Plane` mode K8ssandra Operator does not directly reconcile `K8ssandraCluster` resources.
+
+For example consider the following scenarios:
+
+* Single-region, shared-cluster - K8ssandra Operator is deployed in `Control-Plane` mode on the cluster. It can manage the creation of `K8ssandraCluster` objects and reconcile them locally into Cassandra clusters and nodes.
+* Single-region, dedicated cluster roles - K8ssandra Operator is deployed in `Control-Plane` mode on a small, dedicated, K8s cluster. A separate cluster running in `Data-Plane` mode contains larger instances in which to run Cassandra. This creates a separation between management vs production roles for each cluster.
+* Multiple-region, shared cluster - One region is configured with K8ssandra Operator running in `Control-Plane` mode. This cluster runs both the management operators and Cassandra nodes. Configure additional regions in `Data-Plane` mode to focus solely on Cassandra nodes and services.
+* Multiple-region, dedicated clusters - This scenario is similar to a shared cluster with the exception of a dedicated management cluster running in one of the regions. This follows the same pattern as the _single-region, dedicated cluster roles_ scenario.
+
+## Installation Method
+
+K8ssandra Operator is available to install with either [Helm](https://helm.sh/) or [Kustomize](https://kustomize.io/). Both tools provide various pros and cons which are outside of the scope of this document. Follow the steps within the specific section that is applicable to your environment.
+
+### Helm
+Helm is sometimes described as a package manager for Kubernetes. A specific installation of a Helm chart is called a release. There may be _multiple_ installations of a particular Helm chart within a Kubernetes cluster for the same package. This guide covers a single installation.
+
+#### Configure Helm Repositories
+
+Helm packages are called charts and reside within repositories. Add the following repositories to your Helm installation for both K8ssandra and its dependency Cert Manager.
+
+```console
+# Add the Helm repositories for K8ssandra and Cert Manager
+helm repo add k8ssandra https://helm.k8ssandra.io/stable
+helm repo add jetstack https://charts.jetstack.io
+
+# Update the local index of Helm charts
+helm repo update
+```
+
+#### Install Cert Manager
+Cert Manager provides a helm chart for easy installation within helm-based environments. Install Cert Manager with:
+
+```bash
+helm install cert-manager jetstack/cert-manager \
+     --namespace cert-manager --create-namespace --set installCRDs=true
+```
+
+**Output:**
+
+```bash
+NAME: cert-manager
+LAST DEPLOYED: Mon Jan 31 12:29:43 2022
+NAMESPACE: cert-manager
+STATUS: deployed
+REVISION: 1
+TEST SUITE: None
+NOTES:
+cert-manager v1.7.0 has been deployed successfully!
+
+In order to begin issuing certificates, you will need to set up a ClusterIssuer
+or Issuer resource (for example, by creating a 'letsencrypt-staging' issuer).
+
+More information on the different types of issuers and how to configure them
+can be found in our documentation:
+
+https://cert-manager.io/docs/configuration/
+
+For information on how to configure cert-manager to automatically provision
+Certificates for Ingress resources, take a look at the `ingress-shim`
+documentation:
+
+https://cert-manager.io/docs/usage/ingress/
+```
+
+#### Deploy K8ssandra Operator
+
+You can deploy K8ssandra Operator for `namespace-scoped` operations (the default), or `cluster-scoped` operations. 
+
+* Deploying a `namespace-scoped` K8ssandra Operator means its operations -- watching for resources to deploy in Kubernetes -- are specific only to the **identified namespace** within a cluster. 
+* Deploying a `cluster-scoped` operator means its operations -- again, watching for resources to deploy in Kubernetes -- are **global to all namespace(s)** in the cluster. 
+
+**Control-Plane Mode:**
+
+```bash
+helm install k8ssandra-operator k8ssandra/k8ssandra-operator -n k8ssandra-operator --create-namespace
+```
+
+**Data-Plane Mode:**
+
+```bash
+helm install k8ssandra-operator k8ssandra/k8ssandra-operator -n k8ssandra-operator \
+     --set global.clusterScoped=true --set controlPlane=false --create-namespace
+```
+
+**Output:**
+
+```bash
+NAME: k8ssandra-operator
+LAST DEPLOYED: Mon Jan 31 12:30:40 2022
+NAMESPACE: k8ssandra-operator
+STATUS: deployed
+REVISION: 1
+TEST SUITE: None
+```
+
+{{% alert title="Tip" color="success" %}}
+Optionally, you can use `--set global.clusterScoped=true` to install K8ssandra Operator cluster-scoped. Example:
+
+```bash
+helm install k8ssandra-operator k8ssandra/k8ssandra-operator -n k8ssandra-operator \ 
+     --set global.clusterScoped=true --create-namespace
+```
+{{% /alert %}}
+
+### Kustomize
+
+#### Install Cert Manager
+In addition to Helm, Cert Manager also provides installation support via `kubectl`. Install Cert Manager with:
+
+```console
+kubectl apply -f https://github.com/jetstack/cert-manager/releases/download/v1.9.1/cert-manager.yaml
+```
+
+#### Install K8ssandra Operator
+Replace `X.X.X` with the appropriate [release](https://github.com/k8ssandra/k8ssandra-operator/releases) you want to install:
+
+
+**Control-Plane Mode:**
+
+```bash
+kustomize build "github.com/k8ssandra/k8ssandra-operator/config/deployments/control-plane?ref=vX.X.X" | kubectl apply --server-side -f -
+```
+
+**Data-Plane Mode:**
+
+```bash
+kustomize build "github.com/k8ssandra/k8ssandra-operator/config/deployments/data-plane?ref=vX.X.X" | kubectl apply --server-side -f -
+```
+
+Verify that the following CRDs are installed:
+
+* `certificaterequests.cert-manager.io`
+* `certificates.cert-manager.io`
+* `challenges.acme.cert-manager.io`
+* `clientconfigs.config.k8ssandra.io`
+* `clusterissuers.cert-manager.io`
+* `issuers.cert-manager.io`
+* `k8ssandraclusters.k8ssandra.io`
+* `orders.acme.cert-manager.io`
+* `reapers.reaper.k8ssandra.io`
+* `replicatedsecrets.replication.k8ssandra.io`
+* `stargates.stargate.k8ssandra.io`
+
+
+Check that there are two deployments. A sample result is:
+
+```console
+kubectl -n k8ssandra-operator get deployment
+NAME                 READY   UP-TO-DATE   AVAILABLE   AGE
+cass-operator-controller-manager   1/1     1            1           77s
+k8ssandra-operator                 1/1     1            1           77s
+```
+
+Verify that the `K8SSANDRA_CONTROL_PLANE` environment variable is set to `true`:
+
+```console
+kubectl -n k8ssandra-operator get deployment k8ssandra-operator -o jsonpath='{.spec.template.spec.containers[0].env[?(@.name=="K8SSANDRA_CONTROL_PLANE")].value}'
+```
+
+## Next Steps
+
+Installation is complete.  You can proceed with creating a `K8ssandraCluster` custom resource instance. See the [Quickstart Samples]({{< relref "quickstarts/samples" >}}) for a collection of `K8ssandraCluster` resources to use as a starting point for your own deployment. Once a `K8ssandraCluster` is up and running consider following either the [developer]({{< relref "quickstarts/developer" >}}) or the [site reliability engineer]({{< relref "quickstarts/site-reliability-engineer" >}}) quickstarts.