EKS in AWS Curvenote account

.github/workflows/terraform-deploy-aws-curvenote.yml

@@ -0,0 +1,142 @@
+# See terraform/aws/curvenote/README.md
+name: Terraform aws-curvenote
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - "terraform/aws/curvenote/**"
+      - .github/workflows/terraform-deploy-aws-curvenote.yml
+  workflow_dispatch:
+
+# Only allow one workflow to run at a time
+concurrency: terraform-deploy-aws-curvenote
+
+env:
+  TFPLAN: aws-curvenote.tfplan
+  AWS_DEPLOYMENT_ROLE: arn:aws:iam::166088433508:role/binderhub-github-oidc-mybinderorgdeploy-terraform
+  AWS_REGION: us-east-2
+  WORKDIR: ./terraform/aws/curvenote
+
+jobs:
+  terraform-plan:
+    runs-on: ubuntu-22.04
+    timeout-minutes: 10
+    # These permissions are needed to interact with GitHub's OIDC Token endpoint.
+    permissions:
+      id-token: write
+      contents: read
+    defaults:
+      run:
+        working-directory: ${{ env.WORKDIR }}
+    outputs:
+      apply: ${{ steps.terraform-plan.outputs.apply }}
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v2
+        with:
+          role-to-assume: ${{ env.AWS_DEPLOYMENT_ROLE }}
+          aws-region: ${{ env.AWS_REGION }}
+          role-session-name: terraform-plan
+
+      # Capture the console output of terraform plan to a file, so we can include
+      # it as a job summary in the Actions view:
+      # https://github.blog/2022-05-09-supercharging-github-actions-with-job-summaries/
+      - name: Terraform plan
+        id: terraform-plan
+        run: |
+          terraform init
+          terraform plan -out="${TFPLAN}" -detailed-exitcode -no-color | tee tfplan.stdout
+          # Get the exit code of the terraform plan command, not the tee command.
+          EXIT_CODE="${PIPESTATUS[0]}"
+          if [ $EXIT_CODE -eq 0 ]; then
+            echo "No changes"
+            echo "apply=false" >> "$GITHUB_OUTPUT"
+          elif [ $EXIT_CODE -eq 2 ]; then
+            echo "Changes found"
+            echo "apply=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "Terraform plan failed"
+            exit $EXIT_CODE
+          fi
+
+      # Skip the first bit of the terraform plan stdout
+      # https://unix.stackexchange.com/a/205680
+      - name: Set job summary
+        if: steps.terraform-plan.outputs.apply == 'true'
+        run: |
+          echo '### Terraform Plan summary' >> $GITHUB_STEP_SUMMARY
+          echo '```' >> $GITHUB_STEP_SUMMARY
+          sed -n '/Terraform will perform the following/,$p' tfplan.stdout >> $GITHUB_STEP_SUMMARY
+          echo '```' >> $GITHUB_STEP_SUMMARY
+
+      - name: Install age
+        if: steps.terraform-plan.outputs.apply == 'true'
+        run: |
+          sudo apt-get update -y -q
+          sudo apt-get install -y -q age
+
+      - name: Encrypt plan
+        if: steps.terraform-plan.outputs.apply == 'true'
+        run: |
+          echo ${{ secrets.TFPLAN_ARTIFACT_SECRET_KEY }} > tfplan.key
+          age --identity tfplan.key --encrypt --output "${TFPLAN}.enc" "${TFPLAN}"
+
+      - name: Upload plan
+        if: steps.terraform-plan.outputs.apply == 'true'
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ env.TFPLAN }}
+          path: ${{ env.WORKDIR }}/${{ env.TFPLAN }}.enc
+          if-no-files-found: error
+
+  terraform-apply:
+    needs:
+      - terraform-plan
+    runs-on: ubuntu-22.04
+    timeout-minutes: 60
+    # This environment requires approval before the deploy is run.
+    environment: aws-curvenote
+    # These permissions are needed to interact with GitHub's OIDC Token endpoint.
+    permissions:
+      id-token: write
+      contents: read
+    defaults:
+      run:
+        working-directory: ${{ env.WORKDIR }}
+    if: needs.terraform-plan.outputs.apply == 'true'
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v2
+        with:
+          role-to-assume: ${{ env.AWS_DEPLOYMENT_ROLE }}
+          aws-region: ${{ env.AWS_REGION }}
+          role-session-name: terraform-apply
+
+      - name: Download plan
+        uses: actions/download-artifact@v3
+        with:
+          name: ${{ env.TFPLAN }}
+          path: ${{ env.WORKDIR }}
+
+      - name: Install age
+        run: |
+          sudo apt-get update -y -q
+          sudo apt-get install -y -q age
+
+      - name: Decrypt plan
+        run: |
+          echo ${{ secrets.TFPLAN_ARTIFACT_SECRET_KEY }} > tfplan.key
+          age --identity tfplan.key --decrypt --output "${TFPLAN}" "${TFPLAN}.enc"
+
+      - name: Terraform apply
+        run: |
+          terraform init
+          terraform apply "${TFPLAN}"

.github/workflows/terraform.yml

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+name: Terraform static checks
+
+on:
+  pull_request:
+    paths:
+      - "terraform/**"
+  push:
+    paths:
+      - "terraform/**"
+  workflow_dispatch:
+
+# We can't run CI tests on Terraform, so use as many static linters as possible
+
+jobs:
+  terraform-pre-commit:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version-file: ".python-version"
+
+      - name: Install dependencies
+        run: pip install pre-commit
+
+      # https://github.com/terraform-linters/setup-tflint
+      - name: Install tflint
+        uses: terraform-linters/[email protected]
+        with:
+          tflint_version: v0.47.0
+
+      - name: Run terraform pre-commit
+        run: pre-commit run --all --config .pre-commit-config-terraform.yaml

.gitignore

@@ -20,3 +20,5 @@ env
 
 .terraform
 .terraform.lock.hcl
+# Keep .terraform.lock.hcl to ensure reproducible deployments
+!terraform/aws/curvenote/.terraform.lock.hcl

.pre-commit-config-terraform.yaml

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+# Config reference: https://pre-commit.com/#pre-commit-configyaml---top-level
+#
+# Common tasks
+#
+# - Run on all files: pre-commit run --all --config .pre-commit-config-terraform.yaml
+#
+# Prerequisites:
+# - terraform
+# - tflint
+
+# Currently only aws/ is checked
+files: "^terraform/aws/"
+exclude: "^terraform/aws/pangeo/"
+
+repos:
+  # We can't run any CI tests on production Terraform code, so use as many static linters as possible
+  - repo: https://github.com/antonbabenko/pre-commit-terraform
+    rev: v1.83.0
+    hooks:
+      - id: terraform_fmt
+      - id: terraform_tflint
+      - id: terraform_validate

terraform/aws/binder-eks/README.md

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+# BinderHub on AWS EKS
+
+This module deploys an AWS EKS cluster with IRSA roles to support BinderHub ECR access.
+
+The module has optional support for using a limited non-administrative AWS role with a permissions boundary to deploy the cluster.
+
+For an example see [curvenote](../curvenote/README.md)

terraform/aws/binder-eks/eks-cluster.tf

@@ -0,0 +1,111 @@
+# https://registry.terraform.io/modules/terraform-aws-modules/eks/aws/19.15.2
+# Full example:
+# https://github.com/terraform-aws-modules/terraform-aws-eks/blame/v19.14.0/examples/complete/main.tf
+# https://github.com/terraform-aws-modules/terraform-aws-eks/blob/v19.14.0/docs/compute_resources.md
+
+data "aws_caller_identity" "current" {}
+
+locals {
+  permissions_boundary_arn = (
+    var.permissions_boundary_name != null ?
+    "arn:aws:iam::${data.aws_caller_identity.current.account_id}:policy/${var.permissions_boundary_name}" :
+    null
+  )
+}
+
+# This assumes the EKS service linked role is already created (or the current user has permissions to create it)
+module "eks" {
+  source          = "terraform-aws-modules/eks/aws"
+  version         = "19.15.3"
+  cluster_name    = var.cluster_name
+  cluster_version = var.k8s_version
+  subnet_ids      = module.vpc.public_subnets
+
+  cluster_endpoint_private_access      = true
+  cluster_endpoint_public_access       = true
+  cluster_endpoint_public_access_cidrs = var.k8s_api_cidrs
+
+  vpc_id = module.vpc.vpc_id
+
+  # Allow all allowed roles to access the KMS key
+  kms_key_enable_default_policy = true
+  # This duplicates the above, but the default is the current user/role so this will avoid
+  # a deployment change when run by different users/roles
+  kms_key_administrators = [
+    "arn:aws:iam::${data.aws_caller_identity.current.account_id}:root",
+  ]
+
+  enable_irsa                   = var.enable_irsa
+  iam_role_permissions_boundary = local.permissions_boundary_arn
+
+  eks_managed_node_group_defaults = {
+    capacity_type                 = "SPOT"
+    iam_role_permissions_boundary = local.permissions_boundary_arn
+  }
+
+  eks_managed_node_groups = {
+    worker_group_1 = {
+      name           = "${var.cluster_name}-wg1"
+      instance_types = [var.instance_type_wg1]
+      ami_type       = var.use_bottlerocket ? "BOTTLEROCKET_x86_64" : "AL2_x86_64"
+      platform       = var.use_bottlerocket ? "bottlerocket" : "linux"
+
+      # additional_userdata = "echo foo bar"
+      vpc_security_group_ids = [
+        aws_security_group.all_worker_mgmt.id,
+        aws_security_group.worker_group_all.id,
+      ]
+      desired_size = var.wg1_size
+      min_size     = 1
+      max_size     = var.wg1_max_size
+
+      # Disk space can't be set with the default custom launch template
+      # disk_size = 100
+      block_device_mappings = [
+        {
+          # https://github.com/bottlerocket-os/bottlerocket/discussions/2011
+          device_name = var.use_bottlerocket ? "/dev/xvdb" : "/dev/xvda"
+          ebs = {
+            # Uses default alias/aws/ebs key
+            encrypted   = true
+            volume_size = var.root_volume_size
+            volume_type = "gp3"
+          }
+        }
+      ]
+
+      subnet_ids = slice(module.vpc.public_subnets, 0, var.number_azs)
+    },
+    # Add more worker groups here
+  }
+
+  manage_aws_auth_configmap = true
+  # Anyone in the AWS account with sufficient permissions can access the cluster
+  aws_auth_accounts = [
+    data.aws_caller_identity.current.account_id,
+  ]
+  aws_auth_roles = [
+    {
+      # GitHub OIDC role
+      rolearn  = "arn:aws:iam::${data.aws_caller_identity.current.account_id}:role/${var.cluster_name}-${var.github_oidc_role_suffix}"
+      username = "binderhub-github-oidc"
+      groups   = ["system:masters"]
+    },
+    {
+      # GitHub OIDC terraform role
+      rolearn  = "arn:aws:iam::${data.aws_caller_identity.current.account_id}:role/${var.cluster_name}-${var.github_oidc_role_suffix}-terraform"
+      username = "binderhub-github-oidc"
+      groups   = ["system:masters"]
+    },
+    {
+      # BinderHub admins role
+      rolearn  = aws_iam_role.eks_access.arn
+      username = "binderhub-admin"
+      groups   = ["system:masters"]
+    }
+  ]
+}
+
+data "aws_eks_cluster_auth" "binderhub" {
+  name = var.cluster_name
+}