Files
webhook-server/README.md
T
justin 821ff9b9ef Add ZVMA pre/post script recipe + env-dump examples
Adds a Kubernetes-ZVMA companion to the existing Windows-ZVM recipe:

- scripts/examples/zerto-zvma-send.ps1 - Zerto-side sender for both
  pre and post phases, packages the Zerto* env vars into a structured
  JSON body and POSTs to a {phase}-templated webhook URL.
- scripts/examples/zerto-receiver-notify.ps1 - server-side receiver
  that posts a Slack/Teams notification, with phase-aware formatting
  and ZertoForce highlighted on pre.
- scripts/examples/zerto-receiver-vm-healthcheck.ps1 - server-side
  receiver that pings + port-probes each VM in VmDisplayNames after
  failover and writes a per-run JSON report.
- scripts/examples/send-env-vars.ps1 + save-env-vars.ps1 - generic
  env-dump client/receiver pair (the diagnostic that surfaced what
  the ZVMA scripts-service container exposes).
- docs/recipes/zerto-zvma-pre-post.md - full walkthrough mirroring
  the existing Windows-ZVM recipe's structure.
- README.md and docs/README.md - link the new recipe and examples.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-08 14:16:07 -04:00

93 lines
5.5 KiB
Markdown

# Webhook Server
A Windows-native webhook server that runs PowerShell, cmd / `.bat`, or any executable in response to incoming HTTP requests. Endpoints are configured in a desktop GUI; the actual server runs as a Windows Service so it survives reboots and works without anyone logged in.
Designed for sysadmins who want to wire up tools like **Zerto pre/post scripts**, GitHub webhooks, monitoring alerts, or backup jobs to Windows-side automation — without writing a custom listener every time.
## Quickstart
1. **Download** the latest installer: <https://github.com/recklessop/webhook-server/releases/latest>
2. **Run it.** UAC accept → next, next, finish. Adds a Start Menu entry, registers and starts the Windows Service.
3. **Open Webhook Server** from the Start Menu (auto-elevates).
4. **File → New endpoint**, configure a slug + script, save, hit the URL.
Full first-time walkthrough: [docs/installation.md](docs/installation.md)
## Highlights
- **Many endpoints, one service.** Each webhook is a configured URL slug mapped to a script or command.
- **Per-endpoint auth** — HMAC signature (GitHub / Stripe / Slack style), bearer token, or none.
- **Per-endpoint IP allowlist.** Restrict by IP or CIDR. Empty list = open. Checked before auth so blocked IPs get a fast 403.
- **Per-endpoint Run As** — run the hook as the service account (default), the user logged in at the keyboard (for UI hooks), or a named domain/local user via password.
- **Flexible execution.** Windows PowerShell 5.1, PowerShell 7+, cmd / `.bat`, or any `.exe`.
- **Flexible input** — any combination of: JSON body to stdin, query / headers as env vars, `{{body.foo.bar}}` template expansion into argv.
- **Sync or async per endpoint.** Sync returns exit code + stdout / stderr to the caller; async returns 202 immediately.
- **Outbound callbacks.** Optional per-endpoint URL the service POSTs run results to after the script finishes. HMAC-signed, retry-with-backoff. Required for async callers who want to know what happened.
- **Configurable network** — bind to specific NICs, set the URL host shown in the GUI, configure trusted reverse proxies.
- **HTTPS optional.** Bind a `.pfx` or cert-store thumbprint from the GUI.
- **Secrets at rest** — bearer tokens, HMAC keys, RunAs passwords, and PFX passwords are DPAPI-encrypted (LocalMachine scope) in `config.json`.
- **Auto-snapshots.** Every config save writes a Config Checkpoint; restore to any point with one click. Last 30 retained.
## Architecture
```
+------------------+ named pipe +-------------------------------+
| GUI (WPF) | <-------------> | Windows Service |
| add / edit / | SYSTEM+admin | - Kestrel: hook listener |
| view logs | ACL'd | - Admin pipe server |
+------------------+ | - Executor (process runner) |
| - Callback dispatcher |
| - Serilog file logging |
+-------------------------------+
|
C:\ProgramData\WebhookServer\
- config.json (DPAPI-encrypted)
- backups\ (auto-snapshots)
- logs\ (daily rolling)
```
## Documentation
Everything you need to operate the server:
- [Concepts](docs/concepts.md) — what a webhook is and how this server uses one
- [Installation](docs/installation.md) — interactive and silent install
- [Upgrading](docs/upgrading.md) — single click; what's preserved
- [Uninstalling](docs/uninstalling.md) — clean removal
- [Run As modes](docs/runas-modes.md) — Service / InteractiveUser / SpecificUser
- [Service account & Active Directory](docs/service-account-and-ad.md) — gMSA + delegated rights
- [Network & security](docs/network-and-security.md) — bind addresses, allowlists, HTTPS, secrets
- [Troubleshooting](docs/troubleshooting.md) — common errors and where to look
Recipes:
- [Zerto failover post-script → DNS + service checks](docs/recipes/zerto-pre-post-scripts.md) ← **canonical use case** (Windows ZVM)
- [Zerto ZVMA (Kubernetes) pre/post → notify + VM health check](docs/recipes/zerto-zvma-pre-post.md) — same pattern for the in-cluster scripts-service
- [GitHub-style HMAC-signed webhook](docs/recipes/github-style-hmac.md)
- [Pop UI on the user's desktop](docs/recipes/ui-on-desktop.md)
Ready-to-drop-in Zerto-side scripts are included at [`scripts/examples/zerto-post-failover.ps1`](scripts/examples/zerto-post-failover.ps1) (Windows ZVM) and [`scripts/examples/zerto-zvma-send.ps1`](scripts/examples/zerto-zvma-send.ps1) (ZVMA / Kubernetes); receiver examples for the ZVMA recipe ship as [`zerto-receiver-notify.ps1`](scripts/examples/zerto-receiver-notify.ps1) and [`zerto-receiver-vm-healthcheck.ps1`](scripts/examples/zerto-receiver-vm-healthcheck.ps1).
## Requirements
- Windows 10 / 11 / Server 2019+
- x64
- .NET 8 SDK to build (the released installer includes everything else)
## Building from source
```powershell
git clone https://github.com/recklessop/webhook-server.git
cd webhook-server
# Dev install (publishes + copies to C:\Program Files\WebhookServer + registers service)
powershell -ExecutionPolicy Bypass -File scripts\deploy.ps1
# Or build the installer locally (requires Inno Setup 6: winget install JRSoftware.InnoSetup)
powershell -ExecutionPolicy Bypass -File scripts\build-installer.ps1
```
## License
TBD.