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diff --git a/README.md b/README.md new file mode 100644 index 0000000..76f9db3 --- /dev/null +++ b/README.md @@ -0,0 +1,75 @@ +# Knot Resolver + +[](https://gitlab.nic.cz/knot/knot-resolver/commits/nightly) +[](https://knot.pages.nic.cz/knot-resolver/) +[](https://readthedocs.org/projects/knot-resolver/?badge=latest) +[](https://repology.org/project/knot-resolver/versions) + +Knot Resolver is a caching full resolver implementation written in C and [LuaJIT][luajit], both a resolver library and a daemon. The core architecture is tiny and efficient, and provides a foundation and +a state-machine like API for extensions. There are three modules built-in - *iterator*, *validator*, *cache*, and a few more are loaded by default. Most of the [rich features](https://knot-resolver.readthedocs.io/en/latest/config-overview.html) are written in Lua(JIT) and C. Batteries are included, but optional. + +The LuaJIT modules, support DNS privacy and DNSSEC, and persistent cache with low memory footprint make it a great personal DNS resolver or a research tool to tap into DNS data. TL;DR it's the [OpenResty][openresty] of DNS. + +Strong filtering rules, and auto-configuration with etcd make it a great large-scale resolver solution. + +The server adopts a [different scaling strategy][scaling] than the rest of the DNS recursors - no threading, shared-nothing architecture (except MVCC cache that may be shared) that allows you to pin instances on available CPU cores and grow by self-replication. You can start and stop additional nodes depending on the contention without downtime. + +It also has strong support for DNS over TCP, notably TCP Fast-Open, query pipelining and deduplication, and response reordering. + +### Packages + +The latest stable packages for various distributions are available in our +[upstream repository](https://build.opensuse.org/package/show/home:CZ-NIC:knot-resolver-latest/knot-resolver). +Follow the +[installation instructions](https://software.opensuse.org//download.html?project=home%3ACZ-NIC%3Aknot-resolver-latest&package=knot-resolver) +to add this repository to your system. + +Knot Resolver is also available from the following distributions' repositories. + +* [Fedora and Fedora EPEL](https://src.fedoraproject.org/rpms/knot-resolver) +* [Debian stable](https://packages.debian.org/stable/knot-resolver), + [Debian testing](https://packages.debian.org/testing/knot-resolver), + [Debian unstable](https://packages.debian.org/sid/knot-resolver) +* [Ubuntu](https://packages.ubuntu.com/jammy/knot-resolver) +* [Arch Linux](https://archlinux.org/packages/community/x86_64/knot-resolver/) +* [Alpine Linux](https://pkgs.alpinelinux.org/packages?name=knot-resolver) + +### Building from sources + +Knot Resolver mainly [depends][depends] on Knot DNS libraries, [LuaJIT][luajit] and [libuv][libuv]. +See the [Building project][depends] documentation page for more information. + +### Docker image + +This is simple and doesn't require any dependencies or system modifications, just run: + +``` +$ docker run -Pit cznic/knot-resolver +``` + +The images are meant as an easy way to try knot-resolver, and they're not designed for production use. + +### Running + +The project builds a resolver library in the `lib` directory, and a daemon in the `daemon` directory. It requires no configuration or parameters to run a server on localhost. + +``` +$ kresd +``` + +See the documentation at [knot-resolver.readthedocs.io][doc] for more options. + +[depends]: https://knot-resolver.readthedocs.io/en/stable/build.html +[doc]: https://knot-resolver.readthedocs.io/en/stable/index.html +[scaling]: https://knot-resolver.readthedocs.io/en/stable/systemd-multiinst.html +[deckard]: https://gitlab.nic.cz/knot/deckard +[luajit]: https://luajit.org/ +[libuv]: http://libuv.org +[openresty]: https://openresty.org/ + +### Contacting us + +- [GitLab issues](https://gitlab.nic.cz/knot/knot-resolver/issues) (you may authenticate via GitHub) +- [mailing list](https://lists.nic.cz/postorius/lists/knot-resolver-announce.lists.nic.cz/) +- [](https://gitter.im/CZ-NIC/knot-resolver?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) + |