Overview

Harness SMP Installer is a command-line tool designed to automate the setup and deployment of Harness SMP (Self-Managed Platform) . It simplifies infrastructure provisioning using OpenTofu and Helm, ensuring seamless deployment and management.

Supported Providers

Currently, the installer supports AWS. Support for additional cloud providers will be introduced in the near future.

Supported Profiles

The installer supports two profiles at this time, with plans to expand support for medium and large profiles. The estimated costs provided below are based on on-demand EC2 pricing for t2.2xlarge instances in the US-East (N. Virginia) region and may vary depending on reserved instances, spot pricing, or other AWS regions.

Profile	Resources	Description	Estimated Monthly Cost (AWS)
pov	2 t2.2xlarge nodes	Supports 5 users with 1 execution at a time	~$1,400 - $1,600
small	5 t2.2xlarge nodes	Supports 50 users with 10 concurrent executions	~$3,500 - $4,000

Resources Created

The installer creates the following resources on AWS:

Feature	Description	Supported Platform
loadbalancer	Creates loadbalancer	AWS (ALB)
kubernetes cluster	Creates kubernetes cluster with desired node config	AWS (EKS)
vpc	Creates VPC	AWS
airgap	Creates egress rules to block outgoing traffic	AWS
tls	Create self signed certificate	AWS
helm chart	Install harness helm chart with existing overrides	AWS
dns	Create hosted zone for existing domain	AWS (Route53)
monitoring	Install prometheus and grafana helm charts	AWS (EKS)

How to Run

1. Clone the repository: Clone this repository to your local machine using Git.

   git clone https://github.com/harness/smp-installer.git

2. Build the binary: Run the following command to build the installer binary:

   go build -o smp-installer github.com/harness/smp-installer/cmd

3. Configure the YAML: Use the provided example.yaml file as a reference for configuring the installer. Update the necessary fields as per your requirements.

4. Authenticate with AWS

   • Navigate to the AWS IAM Console.
   • Copy the access key and secret key for a user with administrative access to your AWS account.
   • Export the keys in your terminal using the following commands

   export AWS_ACCESS_KEY_ID=your-access-key
   export AWS_SECRET_ACCESS_KEY=your-secret-key
   export AWS_SESSION_TOKEN=your-session-token
   export AWS_REGION=your-region

5. Run the sync command : Execute the sync command to initiate the deployment:

   ./smp-installer sync -c ./example.yaml

6. View the output: The tool will generate an output directory (as specified in example.yaml), which will contain all rendered OpenTofu files.

Important Notes

If you are using Kubernetes version 1.30 or higher, ensure the following steps are followed:

1. In the root of your directory, create a file named override.yaml and add the following content:

   global:
     storageClass: gp2
     storageClassName: gp2
     defaultStorageClass: gp2
   
   ## Only needed if upgrading from a previous version; not required for fresh installations
   upgrades:
     mongoFCVUpgrade:
       enabled: false
   

2. Modify your example.yaml to include the override.yaml file by adding the following section:

   harness:
       ## Othe Key Above
       override_files: 
           - "<fullpath>/override.yaml"

3. In the example.yaml, ensure that either the Load Balancer or DNS is set to managed: true, but not both. This avoids conflicts.

4. Add the following code to pkg/tofu/aws/dns/variables.tf to ensure proper tagging:

   variable "tags" {
   description = "Tags to apply to resources"
   type        = map(string)
   default     = {}
   }