Also, look inside the .backup file. Does it contain flow JSON?
The next thing to check is what flow file Node-RED is actually trying to use - it logs the full path to its flow file when it starts up.
OK Nick , i have made a backup of the all the files in Documents,
and yes i can see 2 backup files here :
1 .flows_psanode_cred.json.backup
Content :
{"$":"605420f02504dcXXXXXXXXXXXXXXXXXXXXF/BM0fBa"}
2 .flows_psanode.json.backup
content :
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msg.payload[\"psa001/d1/user_input \"];\n\nvar key = pl.user_emp_id + pl.Name + pl.Surname + pl.PIN;//generate the key\nmsg.user = msg.payload[\"psa001/d1/user_input \"];\nmsg.payload = key;\n\nreturn msg;\n//\n//\n//\n//\n//var pl = msg.payload;\n\n//var key = pl.user_emp_id + pl.Name + pl.Surname + pl.PIN;//generate the key\n//msg.user = msg.payload;\n//msg.payload = key;\n\n//return msg;\n\nreturn msg;","outputs":1,"noerr":0,"x":370,"y":140,"wires":[["4f25d54c.eba34c"]]},{"id":"b9eb11ee.c3e03","type":"mqtt in","z":"78e9f8ee.a220c8","name":"Response from server ","topic":"server_response ","qos":"2","datatype":"auto","broker":"3bcada86.16d976","x":160,"y":440,"wires":[[]]}]
3 .flows_psanode.json.backup ( this one was about 2 hours ago )
content :
{"$":"605420f02504dc67ac9bc96539de6b0btMz2nZY2N4qHWPbV8AiRF/BM0fBa"}
EDIT BY PAUL (MODERATOR)
.flows_cred.json.backup edited for security reasons
Number 2 was from a few days ago and very incomplete, 20% of what is missing
how do i check this Nick?
Hi Nick ,
this is the errors after reboot and node-red-restart :
Starting as a systemd service.
Missing ENV var CONFIG_PATH
Starting as a systemd service.
Missing ENV var CONFIG_PATH
Starting as a systemd service.
Missing ENV var CONFIG_PATH
Starting as a systemd service.
Missing ENV var CONFIG_PATH
here is the log file , its seems just before the crach :
===================
12 Jul 10:08:10 - [info] Node-RED version: v1.0.6
12 Jul 10:08:10 - [info] Node.js version: v10.19.0
12 Jul 10:08:10 - [info] Linux 4.19.118+ arm LE
12 Jul 10:08:29 - [info] Loading palette nodes
Missing ENV var CONFIG_PATH
12 Jul 10:09:19 - [info] Dashboard version 2.22.1 started at /psanode
12 Jul 10:09:21 - [info] Settings file : /home/pi/.node-red/settings.js
12 Jul 10:09:21 - [info] Context store : 'default' [module=memory]
12 Jul 10:09:21 - [info] User directory : /home/pi/.node-red
12 Jul 10:09:21 - [warn] Projects disabled : editorTheme.projects.enabled=false
12 Jul 10:09:21 - [info] Flows file : /home/pi/.node-red/flows_psanode.json
12 Jul 10:09:22 - [warn]
---------------------------------------------------------------------
Your flow credentials file is encrypted using a system-generated key.
If the system-generated key is lost for any reason, your credentials
file will not be recoverable, you will have to delete it and re-enter
your credentials.
You should set your own key using the 'credentialSecret' option in
your settings file. Node-RED will then re-encrypt your credentials
file using your chosen key the next time you deploy a change.
---------------------------------------------------------------------
12 Jul 10:09:23 - [info] Starting flows
12 Jul 10:09:23 - [info] Started flows
12 Jul 10:09:24 - [info] Server now running at http://10.11.12.102:1880/
Even now after the reboot all the flows are still missing , i have tried to load some of the backups but with no luck, old data from a few dayas ago.
any idea or advice will be highly appreciated
@Peter I've edited your post above. For security reasons, never post your credential hash in a public forum.
It's a bit like hanging your front door key on the outside of your home!
I'd like to think that the node-RED community are a trustworthy lot, but it's always better to be safe than sorry 
oh,sharp ...sorry Paul , i am rookey
Peter. Do you have another node-red or another pi+spare SD card you can set-up?
Try importing the flow files you backed up into another node-red
I wouldn't ordinarily start with this but given your time constraint, it might get you up and running.
Just keep a safe backup on a separate storage - you should be able to recover most of your work.
Ok - now you have a safe copy of your files... you can try
- try starting the existing one in safe mode
node-red --safe flows_psanode.json- If that works - then try to recall what you had done just previously and undo it
- if not - then (assuming you didn't overwrite by deploying over it) then rename the
.flows_psanode.json.backupfile toflows_psanode.jsonand again try starting that in safe mode... (or copy one of the existing backups back here and retry) - What is requiring that CONFIG_PATH setting ? if you know what it should be then try
export CONFIG_PATH=whatever_you_think_it_should_be && node-red --safe- or maybe try setting it to /tmp if not sure just in order to get it started...
1 Like
Hi Guys,
Sorry for this delayed response, power blackout ( again). finally, I can continue to see if I can fix this ridiculous situation...
@Steve-Mcl, Steve, No unfortunately not: I have 3 devices here part of the project. A door node -Zero PI ( the bad apple), a Server - PI 4 8GB, and A bastion - PI 4 4 GB, all connected wirelessly over LoRaWAN and was working perfect and the whole solution and all code/project was completed this morning @ promptly 6:00. The door node, the responsibility to read and send the data to the server is the bad apple ( Pi Zero - Door node) so the short answer is No, I don't have a spare device to test and a bit scared to remove anything now from the working server or base station nodes.
@dceejay, Hallo, sorry for the delayed response and thank you for the advice. I will try your advice and respond in a few mints after suggested advice implementation ... I will be back in 5 min
again, thank you for everyone's advice and help, let's see if we can fix this or get the flows back soon ( that will be great ) ..
Hey @dceejay, this was the response for option 1 :
pi@psanode:~/.node-red $ node-red --safe flows_psanode.json
12 Jul 17:29:04 - [info]
Welcome to Node-RED
===================
12 Jul 17:29:04 - [info] Node-RED version: v1.0.6
12 Jul 17:29:04 - [info] Node.js version: v10.19.0
12 Jul 17:29:04 - [info] Linux 4.19.118+ arm LE
12 Jul 17:29:23 - [info] Loading palette nodes
Missing ENV var CONFIG_PATH
12 Jul 17:30:11 - [info] Dashboard version 2.22.1 started at /psanode
12 Jul 17:30:14 - [info] Settings file : /home/pi/.node-red/settings.js
12 Jul 17:30:14 - [info] Context store : 'default' [module=memory]
12 Jul 17:30:14 - [info] User directory : /home/pi/.node-red
12 Jul 17:30:14 - [warn] Projects disabled : editorTheme.projects.enabled=false
12 Jul 17:30:14 - [info] Flows file : /home/pi/.node-red/flows_psanode.json
12 Jul 17:30:14 - [warn]
---------------------------------------------------------------------
Your flow credentials file is encrypted using a system-generated key.
If the system-generated key is lost for any reason, your credentials
file will not be recoverable, you will have to delete it and re-enter
your credentials.
You should set your own key using the 'credentialSecret' option in
your settings file. Node-RED will then re-encrypt your credentials
file using your chosen key the next time you deploy a change.
---------------------------------------------------------------------
12 Jul 17:30:15 - [info] *****************************************************************
12 Jul 17:30:15 - [info] Flows stopped in safe mode. Deploy to start.
12 Jul 17:30:15 - [info] *****************************************************************
12 Jul 17:30:15 - [error] Unable to listen on http://10.11.12.102:1880/
12 Jul 17:30:15 - [error] Error: port in use
pi@psanode:~/.node-red $
any suggestions on what to do next, I am going to see if what in the settings file is wrong or missing at CONFIG_PATH. i will see if I can find the line in settings ...
12 Jul 17:30:15 - [error] Error: port in use
node-red is already running, stop it first.
@bakman2, hallo and thank you , let me do that quick ....
HI @bakman2,
the response after stoped ....
Stop Node-RED
Use node-red-start to start Node-RED again
pi@psanode:~ $ cd /home/pi/.node-red pi@psanode:~/.node-red $ node-red --safe flows_psanode.json 12 Jul 17:42:29 - [info]
Welcome to Node-RED
===================
12 Jul 17:42:29 - [info] Node-RED version: v1.0.6
12 Jul 17:42:29 - [info] Node.js version: v10.19.0
12 Jul 17:42:29 - [info] Linux 4.19.118+ arm LE
12 Jul 17:42:47 - [info] Loading palette nodes
Missing ENV var CONFIG_PATH
12 Jul 17:43:32 - [info] Dashboard version 2.22.1 started at /psanode
12 Jul 17:43:34 - [info] Settings file : /home/pi/.node-red/settings.js
12 Jul 17:43:34 - [info] Context store : 'default' [module=memory]
12 Jul 17:43:34 - [info] User directory : /home/pi/.node-red
12 Jul 17:43:34 - [warn] Projects disabled : editorTheme.projects.enabled=false
12 Jul 17:43:34 - [info] Flows file : /home/pi/.node-red/flows_psanode.json
12 Jul 17:43:35 - [warn]
---------------------------------------------------------------------
Your flow credentials file is encrypted using a system-generated key.
If the system-generated key is lost for any reason, your credentials
file will not be recoverable, you will have to delete it and re-enter
your credentials.
You should set your own key using the 'credentialSecret' option in
your settings file. Node-RED will then re-encrypt your credentials
file using your chosen key the next time you deploy a change.
---------------------------------------------------------------------
12 Jul 17:43:35 - [info] *****************************************************************
12 Jul 17:43:35 - [info] Flows stopped in safe mode. Deploy to start.
12 Jul 17:43:35 - [info] *****************************************************************
12 Jul 17:43:36 - [info] Server now running at http://10.11.12.102:1880/
When I lost my flows file, the backup was there, about 5 minutes older, so I did not lose much. But it was a case where NR crashed, and my active flows file disappeared. But I did not lose any other files in .node-red. Not sure my experience is applicable to this scenario. But to those that know the NR code, I defer of course. Just wanted to remind you of my scenario, if in some way it might be applicable. I was on a raspberry Pi as well, btw.
HI @Nodi.Rubrum, thanks for your replay , unfortunately when my RPI crassed at 7:00 this morning , i have tried to many recoveries of older backups by importing the flows and deployed. i think that what rewrited any posibilities of recovery, i hope i am wrong and some one can came a long and say ...just do this and that and all is good again but I am almost sure i will need to sit and remember what all i have created and start over from a backup a few days older .
Post your flow files here. I'll check them for you.
Thanks @Steve-Mcl, Steve . i decided to build everything from scratch as my memory is least still fresh and have little time to get this done .
I would be awesome if you could help me later with when I am passing the payload from the QR reader to the server. can remember how to , it would just be fantastic to know there is someone on standby if i dont succeed ( Syntex logic issues )
I am building like a machine now as we speak and can do this !! super motivated . I just would need some assistance if i struggle ...
Steve , you are a hero in my book!! hopefully i can be as good as you one day
now the OLED display dont want to work any more , regardless
