55 lines
2.2 KiB
Markdown
55 lines
2.2 KiB
Markdown
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# go-systemd
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[](https://travis-ci.org/coreos/go-systemd)
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[](http://godoc.org/github.com/coreos/go-systemd)
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Go bindings to systemd. The project has several packages:
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- `activation` - for writing and using socket activation from Go
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- `dbus` - for starting/stopping/inspecting running services and units
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- `journal` - for writing to systemd's logging service, journald
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- `sdjournal` - for reading from journald by wrapping its C API
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- `machine1` - for registering machines/containers with systemd
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- `unit` - for (de)serialization and comparison of unit files
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## Socket Activation
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An example HTTP server using socket activation can be quickly set up by following this README on a Linux machine running systemd:
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https://github.com/coreos/go-systemd/tree/master/examples/activation/httpserver
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## Journal
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Using the pure-Go `journal` package you can submit journal entries directly to systemd's journal, taking advantage of features like indexed key/value pairs for each log entry.
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The `sdjournal` package provides read access to the journal by wrapping around journald's native C API; consequently it requires cgo and the journal headers to be available.
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## D-Bus
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The `dbus` package connects to the [systemd D-Bus API](http://www.freedesktop.org/wiki/Software/systemd/dbus/) and lets you start, stop and introspect systemd units. The API docs are here:
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http://godoc.org/github.com/coreos/go-systemd/dbus
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### Debugging
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Create `/etc/dbus-1/system-local.conf` that looks like this:
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```
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<!DOCTYPE busconfig PUBLIC
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"-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN"
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"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
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<busconfig>
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<policy user="root">
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<allow eavesdrop="true"/>
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<allow eavesdrop="true" send_destination="*"/>
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</policy>
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</busconfig>
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```
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## machined
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The `machine1` package allows interaction with the [systemd machined D-Bus API](http://www.freedesktop.org/wiki/Software/systemd/machined/).
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## Units
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The `unit` package provides various functions for working with [systemd unit files](http://www.freedesktop.org/software/systemd/man/systemd.unit.html).
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