Start emqtt at boot on raspberry pi about emqx-rel

[Zagrophyte]

Is your built release still in _rel? It looks like you're mixing init.d and systemd scripts, as well as referring to paths where your binaries don't exist.

I had success with systemd, here's what I did:

1. Build emq-relx (looks like you've done this already)
2. Copy the emqttd folder that's in _rel to /home/pi/emqttd
3. I made a systemd service file called emqttd.service that looks like the following (substitute root with whatever user/group you have created for this purpose):

WorkingDirectory=/home/pi/emqttd
ExecStart=/home/pi/emqttd/bin/emqttd start
Restart=always
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=emqttd
User=root
Group=root
Type=forking
[Install]
WantedBy=multi-user.target

4. Copy to systemd system folder sudo cp emqttd.service /etc/systemd/system/emqttd.service
5. Enable the service: sudo systemctl enable emqttd
6. Reload the daemon: sudo systemctl daemon-reload (do this anytime you edit the service file!)
7. Try to start: sudo systemctl start emqttd
8. If any errors occurred, check for errors: journalctl -xe

I think I got all the steps I took above, let me know if I missed anything.

[htaoufikallah]

Thank you @Zagrophyte and @turtleDeng for your help.
I followed @Zagrophyte guide and it worked for me, here is my final service file content:

[Unit]
Description=EMQTTD mqtt broker
After=network.target

[Service]
WorkingDirectory=/home/pi/emqttd
ExecStart=/home/pi/emqttd/bin/emqttd start
ExecStop=/home/pi/emqttd/bin/emqttd stop
Restart=always
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=emqttd
User=root
Group=root
Type=forking
[Install]
WantedBy=multi-user.target

[turtleDeng]

@hictao
run 'journalctl -xe' to get error logs