c8ebbede54
This PR removes the complicated session management introduced in https://github.com/juanfont/headscale/pull/1791 which kept track of the sessions in a map, in addition to the channel already kept track of in the notifier. Instead of trying to close the mapsession, it will now be replaced by the new one and closed after so all new updates goes to the right place. The map session serve function is also split into a streaming and a non-streaming version for better readability. RemoveNode in the notifier will not remove a node if the channel is not matching the one that has been passed (e.g. it has been replaced with a new one). A new tuning parameter has been added to added to set timeout before the notifier gives up to send an update to a node. Add a keep alive resetter so we wait with sending keep alives if a node has just received an update. In addition it adds a bunch of env debug flags that can be set: - `HEADSCALE_DEBUG_HIGH_CARDINALITY_METRICS`: make certain metrics include per node.id, not recommended to use in prod. - `HEADSCALE_DEBUG_PROFILING_ENABLED`: activate tracing - `HEADSCALE_DEBUG_PROFILING_PATH`: where to store traces - `HEADSCALE_DEBUG_DUMP_CONFIG`: calls `spew.Dump` on the config object startup - `HEADSCALE_DEBUG_DEADLOCK`: enable go-deadlock to dump goroutines if it looks like a deadlock has occured, enabled in integration tests. Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com> |
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| gen | ||
| hscontrol | ||
| integration | ||
| proto | ||
| .dockerignore | ||
| .envrc | ||
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| .golangci.yaml | ||
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| CHANGELOG.md | ||
| CODE_OF_CONDUCT.md | ||
| CONTRIBUTING.md | ||
| Dockerfile.debug | ||
| Dockerfile.tailscale-HEAD | ||
| LICENSE | ||
| Makefile | ||
| README.md | ||
| buf.gen.yaml | ||
| config-example.yaml | ||
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| flake.lock | ||
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README.md
An open source, self-hosted implementation of the Tailscale control server.
Join our Discord server for a chat.
Note: Always select the same GitHub tag as the released version you use
to ensure you have the correct example configuration and documentation.
The main branch might contain unreleased changes.
What is Tailscale
Tailscale is a modern VPN built on top of Wireguard. It works like an overlay network between the computers of your networks - using NAT traversal.
Everything in Tailscale is Open Source, except the GUI clients for proprietary OS (Windows and macOS/iOS), and the control server.
The control server works as an exchange point of Wireguard public keys for the nodes in the Tailscale network. It assigns the IP addresses of the clients, creates the boundaries between each user, enables sharing machines between users, and exposes the advertised routes of your nodes.
A Tailscale network (tailnet) is private network which Tailscale assigns to a user in terms of private users or an organisation.
Design goal
Headscale aims to implement a self-hosted, open source alternative to the Tailscale control server. Headscale's goal is to provide self-hosters and hobbyists with an open-source server they can use for their projects and labs. It implements a narrow scope, a single Tailnet, suitable for a personal use, or a small open-source organisation.
Supporting Headscale
If you like headscale and find it useful, there is a sponsorship and donation
buttons available in the repo.
Features
- Full "base" support of Tailscale's features
- Configurable DNS
- Node registration
- Single-Sign-On (via Open ID Connect)
- Pre authenticated key
- Taildrop (File Sharing)
- Access control lists
- MagicDNS
- Support for multiple IP ranges in the tailnet
- Dual stack (IPv4 and IPv6)
- Routing advertising (including exit nodes)
- Ephemeral nodes
- Embedded DERP server
Client OS support
| OS | Supports headscale |
|---|---|
| Linux | Yes |
| OpenBSD | Yes |
| FreeBSD | Yes |
| macOS | Yes (see /apple on your headscale for more information) |
| Windows | Yes docs |
| Android | Yes docs |
| iOS | Yes docs |
Running headscale
Please note that we do not support nor encourage the use of reverse proxies and container to run Headscale.
Please have a look at the documentation.
Talks
- Fosdem 2023 (video): Headscale: How we are using integration testing to reimplement Tailscale
- presented by Juan Font Alonso and Kristoffer Dalby
Disclaimer
This project is not associated with Tailscale Inc.
However, one of the active maintainers for Headscale is employed by Tailscale and he is allowed to spend work hours contributing to the project. Contributions from this maintainer are reviewed by other maintainers.
The maintainers work together on setting the direction for the project. The underlying principle is to serve the community of self-hosters, enthusiasts and hobbyists - while having a sustainable project.
Contributing
Please read the CONTRIBUTING.md file.
Requirements
To contribute to headscale you would need the latest version of Go and Buf(Protobuf generator).
We recommend using Nix to setup a development environment. This can
be done with nix develop, which will install the tools and give you a shell.
This guarantees that you will have the same dev env as headscale maintainers.
Code style
To ensure we have some consistency with a growing number of contributions, this project has adopted linting and style/formatting rules:
The Go code is linted with golangci-lint and
formatted with golines (width 88) and
gofumpt.
Please configure your editor to run the tools while developing and make sure to
run make lint and make fmt before committing any code.
The Proto code is linted with buf and
formatted with clang-format.
The rest (Markdown, YAML, etc) is formatted with prettier.
Check out the .golangci.yaml and Makefile to see the specific configuration.
Install development tools
- Go
- Buf
- Protobuf tools
Install and activate:
nix develop
Testing and building
Some parts of the project require the generation of Go code from Protobuf
(if changes are made in proto/) and it must be (re-)generated with:
make generate
Note: Please check in changes from gen/ in a separate commit to make it easier to review.
To run the tests:
make test
To build the program:
nix build
or
make build
Contributors
Made with contrib.rocks.