Welcome
Cloud Native Link
Cloud Native Link refers to the HCL Link product installation on a Kubernetes cluster.
Requirements
This document lists the hardware and software requirements for installing and running Cloud Native Link.
Cloud Native Link Software Requirements

Introduction
Congratulations on your selection of HCL Link as your data integration solution!
What's New
Release Notes
System requirements
A complete desciption of the hardware and software requirements for both Windows and Linux systems.
Installation
Everything you need to know to install HCL Link.
Administration
Here you will find the tasks that are required for administration of your HCL Link product.
Projects
A project is a container for HCL Link artifacts.
Services
Service definitions define REST services and the endpoints of a service. This guide provides step-by-step instructions for creating, importing, and managing services using the system interface, following Microsoft standards.
Connectors
This documentation describes the connectors and how they are used.
Packages
Servers
This documentation contains a description of the server groups and servers.
Variables
The variables described here include Configuration variables, flow variables, and cache variables.
Dashboards
A description of HCL Link dashboards, including the Server dashboard and the Kibana dashboard.
Runtimes
Descriptions of Link runtime services.
Resource Adapters
About the HCL Link Resource Adapters, and how to use them.
Cloud Native Link
Cloud Native Link refers to the HCL Link product installation on a Kubernetes cluster.
- Overview
  HCL Link offers a Helm chart that facilitates its deployment on Kubernetes. This approach, known as Cloud Native Link, signifies the installation of the HCL Link product within a Kubernetes cluster.
- Cloud Native Link Architecture
- Requirements
  This document lists the hardware and software requirements for installing and running Cloud Native Link.
  - Hardware Requirements
  - Cloud Native Link Software Requirements
- Limitations
  This section details the limitations concerning deployment, configuration, and feature support for the Cloud Native Link.
- Installation
  This section provides instructions for installing the HCL Cloud Native Link application on a Kubernetes cluster using the official Helm chart.
- Upgrade and Rollback
  Helm is a Kubernetes package manager that uses charts to define, install, and upgrade even the most complex Kubernetes applications.
- Backup
- Compute Resource Allocation
- Networking
- Storage
- Memory Considerations for Cloud native
- Security
  This section describes how security, authentication, and authorization are managed in HCL Link when deployed in a cloud-native environment.
- Scaling
  This section describes the scaling capabilities and limitations of HCL Link components defined in the Helm chart, focusing on replica management, downtime impact, and autoscaling.
- Logging and Monitoring
  This document explains the logs generated by HCL Link and Kubernetes, how to retrieve them, and the built-in monitoring tools in Link.
- Unica Link Integration
  This document explains how HCL Link integrates with the HCL Unica platform. It provides an overview of deployment patterns and key configuration sections in the HCL Link Helm chart.
- Troubleshooting
- FAQ
  This section answers frequently asked questions about deploying and managing HCL Link in a cloud-native environment.
- Link Helm Chart Parameters
- Reference
Reference
This documentation provides HCL Link reference information.
Notices

Cloud Native Link Software Requirements

Kubernetes Cluster

Use Kubernetes version 1.23 or newer for best performance and security.

Cloud Native Link supports the following Kubernetes environments:

AWS Fargate
Minikube
k3d
AKS (Azure Kubernetes Service)
GKE (Google Kubernetes Engine)
OpenShift
Kind (Kubernetes in Docker)

Helm

Install the Helm CLI tool to manage and deploy Link Helm charts.

Download the Helm binary and add it to your system PATH from the Helm installation page.

Use Helm version 3.15.2 or newer.

PV Provisioner

Persistent Volume (PV) provisioner is required to support the underlying infrastructure.

Command-line Tools

Install the following command-line tools to manage cluster resources:

kubectl for standard Kubernetes clusters
OC for OpenShift environments

MongoDB (Optional)

The Link Helm chart installs MongoDB by default.

Default version: 4.2.9 (docker.io/bitnamilegacy/mongodb:4.2.9)

Supported versions: 4.2.9 and higher

You can configure the chart to connect to your own MongoDB instance if required.

Redis (Optional)

The Link Helm chart installs Redis by default.

Default version: 6.2.3 (docker.io/bitnamilegacy/redis:6.2.3)

Supported versions: 6.2.3 and higher

Link Images

Use Link container images from the HCL image registry at hclcr.io.

Contact the HCL Support Team to get access to the registry if needed.

Link Helm Chart

Download the Link Helm chart (lnk-product) from the HCL Harbor OCI registry.

Contact the HCL Support Team if you need access.

Keycloak (Optional)

Use Keycloak for authentication if required.

Provide the Keycloak client ID and Client secret in the Link configuration.

Supported versions: 24.0.11.redhat-00001 or higher

Kafka Server (Optional)

Use an external Kafka server if required.

Supported versions: 3.x.x and higher