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diff --git a/doc/config-no-systemd.rst b/doc/config-no-systemd.rst new file mode 100644 index 0000000..a8cbb09 --- /dev/null +++ b/doc/config-no-systemd.rst @@ -0,0 +1,37 @@ +.. SPDX-License-Identifier: GPL-3.0-or-later + +.. _usage-without-systemd: + +********************* +Usage without systemd +********************* + +.. tip:: Our upstream packages use systemd integration, which is the recommended + way to run kresd. This section is only relevant if you choose to use kresd + without systemd integration. + +Knot Resolver is designed to be a single process without the use of threads. +While the cache is shared, the individual processes are independent. This +approach has several benefits, but it also comes with a few downsides, in +particular: + +* Without the use of threads or forking (deprecated, see `#529`_), multiple + processes aren't managed in any way by kresd. +* There is no maintenance thread and these tasks have to be handled by separate + daemon(s) (such as :ref:`garbage-collector`). + +To offset these these disadvantages without implementing process management in +kresd (and reinventing the wheel), Knot Resolver provides integration with +systemd, which is widely used across GNU/Linux distributions. + +If your use-case doesn't support systemd (e.g. using macOS, FreeBSD, Docker, +OpenWrt, Turris), this section describes the differences and things to keep in +mind when configuring and running kresd without systemd integration. + +.. toctree:: + :maxdepth: 2 + + config-no-systemd-processes + config-no-systemd-privileges + +.. _`#529`: https://gitlab.nic.cz/knot/knot-resolver/issues/529 |