Using Terraform to Install Gremlin

gremlin.tf

variable "gremlin_team_id" {
  type        = string
  description = "The Gremlin team ID. See https://app.gremlin.com/settings/teams to get your team ID."
}

variable "gremlin_team_secret" {
  type        = string
  description = "The Gremlin team secret. See https://app.gremlin.com/settings/teams to get your team secret."
}

# To install Gremlin on Kubernetes, use the Helm provider. Then apply the Gremlin Helm Chart.
provider "helm" {
  kubernetes {
    load_config_file       = "false"
    # Use Terraform to setup your Kubernetes cluster and pass the cluster information below.
    host                   = your_kubernetes_cluster.k8s_cluster.endpoint
    token                  = your_kubernetes_cluster.k8s_cluster.kube_config[0].token
    cluster_ca_certificate = base64decode(your_kubernetes_cluster.k8s_cluster.kube_config[0].cluster_ca_certificate)
  }
}

# Apply Gremlin Helm chart
resource "helm_release" "gremlin_helm_chart" {
  name  = "gremlin"
  chart = "gremlin/gremlin"

  set {
    name  = "gremlin.secret.managed"
    value = "true"
  }
  set {
    name  = "gremlin.secret.type"
    value = "secret"
  }
  set {
    name  = "gremlin.secret.clusterID"
    # This value can be passed from your Kubernetes cluster or set to an arbitrary string.
    value = your_kubernetes_cluster.id
  }
  set {
    name  = "gremlin.secret.teamID"
    value = var.gremlin_team_id
  }
  set {
    name  = "gremlin.secret.teamSecret"
    value = var.gremlin_team_secret
  }
  
# To install Gremlin on a VM or bare-metal server, you'll likely want to use the remote-exec provisioner.
# This allows you to run commands on the server. Pass the commands found in the Gremlin installation
# documentation at https://www.gremlin.com/docs/infrastructure-layer/installation/
resource "aws_instance" "web" {
  provisioner "remote-exec" {
    inline = [
      "sudo yum install -y iproute-tc",
      "sudo curl https://rpm.gremlin.com/gremlin.repo -o /etc/yum.repos.d/gremlin.repo",
      "sudo yum install -y gremlin gremlind",
      "export GREMLIN_TEAM_ID=var.gremlin_team_id",
      "export GREMLIN_TEAM_SECRET=var.gremlin_team_secret",
      "gremlin init"
    ]
  }
}