Sorry. Ok, I didn't go into the system directory.
I sometimes miss names in paths.
Yes, I know things change.
But it makes it confusing for idiots like me when we try to research what is going on.
Someone - please.
Looking for how to work out what those lines mean.
(As there are a lot of them)
And if that number doesn't match what the O/S is using there is a conflict.
I'm simply confused. None of this makes sense to me.
Just I saw about 10 instances of that on the screen shot.
It got me interested and I went off and read the link I supplied.
Alas it lacks . . . . context (?) for me. But that doesn't mean it isn't a problem. Though it also doesn't mean it is. I get that.
I am only asking for a bit of help to what that file does and how it would affect the machine and memory use.
But I can't understand it as written and hope someone smarter than me could (maybe) translate it to something I can understand, or at least get a better appreciation of it's place in the scheme of things.
Node-RED uses the Linux systemd to set up autostarting on boot - This is part of many Linux systems - again google is your fried to read up on systemd - eg Use systemd to Start a Linux Service at Boot | Linode - As part of that you can configure how it starts up and the service file defines some things that Node-RED needs like the user and working directory - and it also limits the amount of memory it tries to use. By default we set that to half of the available memory on the device so depending on which model Pi that number may vary. If you have absolutely nothing else of consequence running on the Pi you can up that to let Nod-RED have more - or if very busy with other things like databases etc then maybe less...
If you read up on Htop you will find that it will show every thread for a process..... and while node.js is essentially single threaded, it does spawn off other threads to handle things like async IO (writing to disk etc) - so it may well look like Node-RED is running multiple times... I think you can use the H key to stop it doing that - but RTFM...
Yes, ok. "RTFM" but it doesn't do me any good if it is written in a language which I don't speak/understand.
Basically since accidentally updating node-red (or some part of it) and it breaking and so I had to update to Buster, the machine which used to work is now basically non-usable.
Yeah, my problem. I am trying to work out what has gone on, but am being told (basically) "Too bad".
I am not running multiple versions of Node-Red.
But one thing I did notice is that the original flow file was 1.2 meg in size.
After making a new SD card and all that stuff and importing the flow it has grown to 2.4 meg.
(Basically doubled.)
It complained about the security key thing not being set by me, but the system default (what ever)
I have tried a few times to get my head around doing that to no avail. All I see is words.
Their greater meaning is lost on me.
So the fact that the flow size has doubled may also be contributing to the machine being nearly useless.
I don't think anyone is saying "too bad". Which language would you like/prefer ? We can only try to point you to manuals on htop and systemd if that is what you are asking about and there must be one out there that can help.
Not sure what/where you mentioned the security key - but the warning when you start up tells you which file to edit (settings.js) and what to edit (the credentialSecret property) - but it is just a warning and you don't have to set it - If you do you can then use those same credentials on another machine which makes moving flows easier - but if you don't you will need to re-enter them on a new machine.
I can't comment on why your flow file may have doubled in size unless for some reason you have imported it twice and there are two sets of flows running - but that should be obvious from the tabs at the top as they would be doubles as well. (unless hidden for some reason).
That's a tricky point. Same machine.
Said machine died and I rebuilt it.
So it is going back onto the same machine, but a different build of NR (and O/S)
I tried doing what I understand is needed to be done, but it doesn't/didn't work.
(That was a long time ago)
Well, I hope not. I stopped NR, put the new files in and started NR.
Lots of scrolling as it started which was kind of normal but some of them were new.
I didn't screen shot it.
There couldn't be any hidden tabs as the NR version was too early.
A good point from @jbudd, if you now have pretty print enabled, and didn't have before, then I think the file may get a lot bigger when you first deploy it.
