pez-infra/.github/workflows/terraform.yml
Rasmus Wejlgaard d2ec024e6a Give Terraform CI tailnet access for the Proxmox provider
The bpg/proxmox provider has to reach london-a's API and node, which only
live on the tailnet, during plan and apply. Add a setup-tailnet composite
action (Tailscale via the CI OAuth client + the deploy SSH key in an agent)
and use it in the terraform plan/apply and validate workflows. Pin the
provider's node SSH address to london-a's Tailscale IP so it isn't reached
via the API-reported LAN address.
2026-06-21 18:20:02 +01:00

100 lines
2.7 KiB
YAML

name: Terraform
on:
push:
branches: [main]
paths:
- "terraform/**"
- ".github/workflows/terraform.yml"
# Requires these repository secrets:
# AGE_SECRET_KEY — age private key for SOPS decryption
# Serialize Terraform runs so two merges can't apply against the state
# concurrently. Never cancel an in-flight run (an interrupted apply can
# corrupt state) — queue instead.
concurrency:
group: terraform-state
cancel-in-progress: false
jobs:
plan:
name: Plan
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v6
- uses: ./.github/actions/setup-tofu
- name: Decrypt secrets
uses: ./.github/actions/sops-decrypt
with:
age-key: ${{ secrets.AGE_SECRET_KEY }}
- name: Set backend credentials
uses: ./.github/actions/tofu-backend-creds
# Proxmox (bpg) provider reaches london-a over the tailnet.
- name: Set up tailnet + SSH
uses: ./.github/actions/setup-tailnet
with:
tailscale-client-id: ${{ secrets.TAILSCALE_CLIENT_ID }}
tailscale-audience: ${{ secrets.TAILSCALE_AUDIENCE }}
ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
- name: tofu init
working-directory: terraform/
run: tofu init
- name: tofu plan
working-directory: terraform/
run: tofu plan -out=tfplan
- name: Upload plan
if: github.event_name == 'push' && github.ref == 'refs/heads/main'
uses: actions/upload-artifact@v7
with:
name: tfplan
path: terraform/tfplan
retention-days: 1
apply:
name: Apply
needs: plan
if: github.event_name == 'push' && github.ref == 'refs/heads/main'
runs-on: ubuntu-latest
environment: production
steps:
- uses: actions/checkout@v6
- uses: ./.github/actions/setup-tofu
- name: Decrypt secrets
uses: ./.github/actions/sops-decrypt
with:
age-key: ${{ secrets.AGE_SECRET_KEY }}
- name: Set backend credentials
uses: ./.github/actions/tofu-backend-creds
# Proxmox (bpg) provider reaches london-a over the tailnet.
- name: Set up tailnet + SSH
uses: ./.github/actions/setup-tailnet
with:
tailscale-client-id: ${{ secrets.TAILSCALE_CLIENT_ID }}
tailscale-audience: ${{ secrets.TAILSCALE_AUDIENCE }}
ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
- name: tofu init
working-directory: terraform/
run: tofu init
- name: Download plan
uses: actions/download-artifact@v8
with:
name: tfplan
path: terraform/
- name: tofu apply
working-directory: terraform/
run: tofu apply -auto-approve tfplan