can't work with systemd

[jmhazty]

I use systemd to manage go app.
config:
ExecReload=/bin/kill -s HUP $MAINPID

Because of pid change, systemd think process failed, and use ExecStart to start process.But process was started by endless, systemd think process start failed.

How can I use endless with systemd?

[fmpwizard]

in your service/unit file, use the parameter

PIDFile=

and specify the path to the pid file

That will help systemd work with endless

[andrewrbe]

Another option is to use Type=notify in unit file:

Description=image proxy
After=network.target

[Service]
Type=notify
ExecStart=/usr/bin/my-proxy &
ExecReload=/bin/kill -HUP $MAINPID
Restart=on-failure
WorkingDirectory=/etc/my-proxy/
LimitNOFILE=infinity
WatchdogSec=30s

[Install]
WantedBy=multi-user.target 

and add notify in your code: https://vincent.bernat.ch/en/blog/2017-systemd-golang

So, you call

_, _ = daemon.SdNotify(false, daemon.SdNotifyReady)
go watchdog()

on server start. Where watchdog is:

func watchdog() {
	interval, err := daemon.SdWatchdogEnabled(false)
	if err != nil || interval == 0 {
		if err != nil {
			log.Println(err)
		}
		return
	}
	for {
		daemon.SdNotify(false, daemon.SdNotifyWatchdog)
		time.Sleep(interval / 3)
	}

}

As result you have working systemctl reload command (without unnecessary process restarting) and you server is rebooted even after kill command.