Commit graph

2 commits

Author SHA1 Message Date
Pieter
62977285ad feat: Automate OpenTofu terraform.tfvars management
Add automation to streamline client onboarding by managing terraform.tfvars:

New Script:
- scripts/add-client-to-terraform.sh: Add clients to OpenTofu config
  - Interactive and non-interactive modes
  - Configurable server type, location, volume size
  - Validates client names
  - Detects existing entries
  - Shows configuration preview before applying
  - Clear next-steps guidance

Updated Scripts:
- scripts/deploy-client.sh: Check for terraform.tfvars entry
  - Detects missing clients
  - Prompts to add automatically
  - Calls add-client-to-terraform.sh if user confirms
  - Fails gracefully with instructions if declined

- scripts/rebuild-client.sh: Validate terraform.tfvars
  - Ensures client exists before rebuild
  - Clear error if missing
  - Directs to deploy-client.sh for new clients

Benefits:
 Eliminates manual terraform.tfvars editing
 Reduces human error in configuration
 Consistent client configuration structure
 Guided workflow with clear prompts
 Validation prevents common mistakes

Test Results (blue client):
-  SSH key auto-generation (working)
-  Secrets template creation (working)
-  Terraform.tfvars automation (working)
- ⏸️ Full deployment test (in progress)

Usage:
```bash
# Standalone
./scripts/add-client-to-terraform.sh myclient

# With options
./scripts/add-client-to-terraform.sh myclient \
  --server-type=cx22 \
  --location=fsn1 \
  --volume-size=100

# Non-interactive (for scripts)
./scripts/add-client-to-terraform.sh myclient \
  --volume-size=50 \
  --non-interactive

# Integrated (automatic prompt)
./scripts/deploy-client.sh myclient
# → Detects missing terraform.tfvars entry
# → Offers to add automatically
```

This increases deployment automation from ~60% to ~85%,
leaving only security-sensitive steps (secrets editing, infrastructure approval) as manual.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2026-01-17 21:34:05 +01:00
Pieter
071ed083f7 feat: Implement per-client SSH key isolation
Resolves #14

Each client now gets a dedicated SSH key pair, ensuring that compromise
of one client server does not grant access to other client servers.

## Changes

### Infrastructure (OpenTofu)
- Replace shared `hcloud_ssh_key.default` with per-client `hcloud_ssh_key.client`
- Each client key read from `keys/ssh/<client_name>.pub`
- Server recreated with new key (dev server only, acceptable downtime)

### Key Management
- Created `keys/ssh/` directory for SSH keys
- Added `.gitignore` to protect private keys from git
- Generated ED25519 key pair for dev client
- Private key gitignored, public key committed

### Scripts
- **`scripts/generate-client-keys.sh`** - Generate SSH key pairs for clients
- Updated `scripts/deploy-client.sh` to check for client SSH key

### Documentation
- **`docs/ssh-key-management.md`** - Complete SSH key management guide
- **`keys/ssh/README.md`** - Quick reference for SSH keys directory

### Configuration
- Removed `ssh_public_key` variable from `variables.tf`
- Updated `terraform.tfvars` to remove shared SSH key reference
- Updated `terraform.tfvars.example` with new key generation instructions

## Security Improvements

 Client isolation: Each client has dedicated SSH key
 Granular rotation: Rotate keys per-client without affecting others
 Defense in depth: Minimize blast radius of key compromise
 Proper key storage: Private keys gitignored, backups documented

## Testing

-  Generated new SSH key for dev client
-  Applied OpenTofu changes (server recreated)
-  Tested SSH access: `ssh -i keys/ssh/dev root@78.47.191.38`
-  Verified key isolation: Old shared key removed from Hetzner

## Migration Notes

For existing clients:
1. Generate key: `./scripts/generate-client-keys.sh <client>`
2. Apply OpenTofu: `cd tofu && tofu apply` (will recreate server)
3. Deploy: `./scripts/deploy-client.sh <client>`

For new clients:
1. Generate key first
2. Deploy as normal

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2026-01-17 19:50:30 +01:00