unbound systemd fil missing env variable

[Cherkah]

each times i start/restart unbound i get this warning:

unbound[33389]: [XXXXXXX] unbound[XXXXX:0] warning: Systemd mandatory ENV variable is not defined: LISTEN_PID

this due to the absence of the line DefaultEnvironment in /usr/lib/systemd/system/unbound.service
if am correct what should i have to add at DefaultEnvironment= ????

regards

[wcawijngaards]

This happens because you have the option 'use-systemd: yes' enabled. This uses socket activation, it is where traffic on a socket makes systemd spawn the server. But then unbound starts but can not find the socket passed.

See documentation here
https://www.freedesktop.org/software/systemd/man/systemd.socket.html#
https://www.freedesktop.org/software/systemd/man/sd_listen_fds.html#
in man systemd.socket and man sd_listen_fds.

So not with the option you cite, that sets environment variables, but won't pass the socket.

If you do not want to use socket activation, you can set use-systemd: no in unbound.conf (the default).

Unbound also supports the use of sd_notify, and this is controlled by a compile time option. You have this option enabled, compile with systemd support.