go-systemd
Go bindings to systemd. The project has three packages:
- activation - for writing and using socket activation from Go
- journal - for writing to systemd's logging service, journal
- dbus - for starting/stopping/inspecting running services and units
Go docs for the entire project are here:
http://godoc.org/github.com/coreos/go-systemd
Socket Activation
An example HTTP server using socket activation can be quickly setup by following this README on a Linux machine running systemd:
https://github.com/coreos/go-systemd/tree/master/examples/activation/httpserver
Journal
Using this package you can submit journal entries directly to systemd's journal taking advantage of features like indexed key/value pairs for each log entry.
D-Bus
The D-Bus API lets you start, stop and introspect systemd units. The API docs are here:
http://godoc.org/github.com/coreos/go-systemd/dbus
Debugging
Create /etc/dbus-1/system-local.conf that looks like this:
<!DOCTYPE busconfig PUBLIC
"-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
<policy user="root">
<allow eavesdrop="true"/>
<allow eavesdrop="true" send_destination="*"/>
</policy>
</busconfig>