NAME

       Munin::Common::Daemon - utilities for daemons.

SYNOPSIS

       The following daemon-related features are supported:

       sd_notify: signal readiness of the daemon

SUBROUTINES

   emit_sd_notify_message
       Example:

        emit_sd_notify_message();

       Send a "ready" signal according to the "sd_notify" interface:

       1. check whether the environment variable "NOTIFY_SOCKET" is defined
       2. remove this variable from the environment (this interface is not propagated to
       children)
       3. send the string "READY=1" to the socket

       The function returns silently, if something fails.

       The function should be called as soon as the service is ready to accept requests.  Calling
       this function is always safe - independent of the caller supporting the "sd_notify"
       interface or not.

       Examples for callers supporting the "sd_notify" interface:

       systemd: see "Type=Notify" in "5" in systemd.exec
       start-stop-daemon: see "--notify-await" in "8" in start-stop-daemon

       See the specification of "sd_notify"
       <https://www.freedesktop.org/software/systemd/man/sd_notify.html> for further details of
       this interface.