rc.local doesn't work on boot

crispyoz

@Fikret-UYSAL if you don't want to use procd (bizarre) add some debugging to your rc.local. Just pipe your output to a file so can review the file to determine if your command actually runs and fails.

eg: add this to your rc.local
echo "Before my command runs" >> /var/log/mylog
/mydirectory/mycommand >> /var/log/mylog
echo "After my command runs" >> /var/log/mylog

To examine the log: cat /var/log/mylog

Two other things to look for:

You may want to try running your app using a shell script so you can use sh /mydirectory/myappname sometimes rc.local fails to run commands due to path and other environment issues.
add an empty line to the end of your rc.local after your command. I had a problem previously where it didn't seem to be understanding that the command had been terminated. Not sure why.

György Farkas

@Fikret-UYSAL One more time please let us know what do you want to do exactly?

Lnx Prof

rc.local paradigm works just fine on the Omega.

Your issue would be OBVIOUS if you would post your rc.local, but instead have everyone guessing as to what you're doing and why it's not working.

My guesses:

You haven't made rc.local executable. Make sure to chmod +x the file.
You are trying to run python3, but you likely haven't specified a shell interpreter in a hash-bang at the top - so python can't be found because there's no set executable search path.
You don't have python3, or it's not found in the executable search path (have you tried hardcoding the full path: /usr/bin/python3?)

Before saying "no, no, no" to these (admitted) guesses, consider actually posting your full rc.local along with the output of which python3 and ls -l /etc/rc.local. Those should provide an immediate answer to your issue.

Fikret UYSAL

@Lnx-Prof

Hi. Thanks for attention. I designed two different pcb. One is gsm+gps module supported vehicle tracking project. the other is a hub of lots of gpio and sensor connection pcb.

alt metni
bağlantı metni

bağlantı metni

I load bin file from repo.onioniot.io/omega2/images
B239 latest image, made update, install python3, pyserial.

Module is still waiting to press enter before "crng init done" line.

İf I press enter omega2 busybox screen comes and prints what will you want, if i don't press enter, it waits for enter key. Do nothing else.

I load b202 image and made update, install python, pyserial and reboot.
Omega2+ waits to press enter,
When i press enter it prints busybox screen. İf i don't press enter, omega2 waits for enter key, do nothing else.

I added to rc.local file, the line below:
python /home/sayHello.py

When i give this command at terminal window, it works fine and prints "hello" word. But at rc.local file it does nothing.

Two different images (b202 and b239) and two different omega2+ chip, i couldn't boot properly and rc.local file didn't work.

Now, sun is rising when i am writing this sentences. Morning is coming up.

I try to take a youtube video of boot process and give link to you.

Thanks for your attention @crispyoz and @Lnx-Prof and @György-Farkas

György Farkas

@Fikret-UYSAL What is your /home/sayHello.py file please?

Fikret UYSAL

@György-Farkas

Just a python file: sayHello.py file content is:
print("hello")

İ wanted to see whether it would work.

György Farkas

@Fikret-UYSAL
Q: What do you want to do exactly?
A: I want to print the 'hello' word to the Serial Console during boot with rc.local.
(if Í understand well )

Please modify your rc.local file:

# Omega2+ FW v0.3.2 b239
# this is the modified rc.local file

root@Omega-5BE1:/# cat /etc/rc.local
# Put your custom commands here that should be executed once
# the system init finished. By default this file does nothin

echo "hello" > /dev/ttyS0
exit 0

Please reboot your Omega2+ board and watch the output of the Serial Console carefully:

 ...
[   29.736829] IPv6: ADDRCONF(NETDEV_UP): br-wlan: link is not ready
[   30.417503] 
[   30.417503] _      _____   ___  ___    _________  ___  ____
[   30.417503] | | /| / / _ | / _ \/ _ \  / ___/ __ \/ _ \/ __/ V1.1
[   30.417503] | |/ |/ / __ |/ , _/ ___/ / /__/ /_/ / , _/ _/  
[   30.417503] |__/|__/_/ |_/_/|_/_/     \___/\____/_/|_/___/  
[   30.417503] 		   Onion Enhanced MT7688 WiFi Driver 
[   30.417503] 
[   30.769845] DMA Scheduler Mode=0(LMAC)
[   30.773760] efuse_probe: efuse = 10000012
[   30.777889] 1. Phy Mode = 14
[   31.051046] 2. Phy Mode = 14
[   31.054078] 3. Phy Mode = 14
[   31.083726] 	WTBL Segment 1 info:
[   31.087104] 		MemBaseAddr/FID:0x28000/0
[   31.090991] 		EntrySize/Cnt:32/128
[   31.094478] 	WTBL Segment 2 info:
[   31.097838] 		MemBaseAddr/FID:0x40000/0
[   31.101722] 		EntrySize/Cnt:64/128
[   31.105182] 	WTBL Segment 3 info:
[   31.108541] 		MemBaseAddr/FID:0x42000/64
[   31.112512] 		EntrySize/Cnt:64/128
[   31.115971] 	WTBL Segment 4 info:
[   31.119330] 		MemBaseAddr/FID:0x44000/128
[   31.123404] 		EntrySize/Cnt:32/128
hello
[   48.657547] br-wlan: port 1(ra0) entered blocking state
[   48.662862] br-wlan: port 1(ra0) entered disabled state
[   48.668604] device ra0 entered promiscuous mode
[   48.673576] br-wlan: port 1(ra0) entered blocking state
[   48.678884] br-wlan: port 1(ra0) entered forwarding state
[   48.686136] IPv6: ADDRCONF(NETDEV_CHANGE): br-wlan: link becomes ready
[   50.901365] Interface apcli0 link up! (WPA2PSK AES)
[   77.940640] random: crng init done
[   77.944109] random: 6 urandom warning(s) missed due to ratelimiting

As you see the modified rc.local works as expected.

Fikret UYSAL

@György-Farkas
Thanks.
I will try.

Fikret UYSAL

@György-Farkas

thanks. I added > /dev/ttyS0 to rc.local. It works fine. Thanks a lot.

red arrows are my outputs of my app.

Anil bhaskar

Hi,
i have a new onion module and seem to get exact same error as yours. it will get stuck here
[ 44.852427] br-wlan: port 1(ra0) entered forwarding state
[ 44.859496] IPv6: ADDRCONF(NETDEV_CHANGE): br-wlan: link becomes ready

and wont proceed until i press "enter". my setup is identical to you yours. onion connected to pc through usb.
the module was never used and does not have any special code or script running during boot.
Screen Shot 2020-07-29 at 5.56.09 PM.png

any idea what might be going on here.

Thanks for looking into this.

crispyoz

@Anil-bhaskar did you try the example rc.local @György-Farkas posted above? It may be that rc.local is functioning correctly but that the commands you are executing are not.

You can post your rc.local

If you are trying to start a daemon you may need to background it using & so it doesn't exit. I personally thing procd is more appropriate in that case.