Octoprint goes offline often--- sometimes during print
What I have done :
New SD Card
Fresh new Software install
New 3A Power Supply
Removed PI from case
CR10 Smart Pro
I have 2 other units with same exact specs running same firmware, same cables, same plugins, Etc
1- Other Smart Pro
1 - Ender 2 S1 Pro
These do not display same issues.
Well, I reviewed your log file. Nothing sticks out as a detectable issue in the log. Well not to me anyway. I am not sure by your issue description if you are saying that the Raspberry Pi is the thing going offline(Reboot, rest, unresponsive/other) or if OctoPrint is losing its connection to the printer or maybe OctoPrint service is stopping. "offline" can mean so many thing to a user/operator. Depending on what you mean by "octoprint goes offline", one might be able to point you in a direction.
Have you run it in safeMode? If not, you could try that. It might isolate it to being related to one of your plugin's. Well that is if the issue goes away.
If you mean that OctoPrint is losing its connection to the printer, it could be a cable issue. But it would likely show up in the log.
If you mean that the OP Service stopped, it could be RPi hardware related, over heating or something. Again if its a slow build up issue it might show in the log in some way.
If the RPi is simply shutting down,that would account for the fact that the logs show nothing. If this were the case, I would suspect an OS Setup issue. Maybe the OS is going to sleep? If you are using the standard OctoPrint image, that is not likely. You dont list what image you used.
I first suspect the following issues, outside of Octoprint:
Loose power cable to the raspi
Bad USB power cable to the pi
Bad power adaptor to the pi
Bad raspberrypi components (there are sometimes chip-level issues, swap and see), this was especially true of the Raspi 3 versions. I have received a number of wonky units ( however, I was also ordering 200 at a clip, so YMMV).
bad write to the SD card - errors in writing to the SD card will pose problems, make sure the write is clean, run a verification of the write to ensure it is OK. Also - use a different SD card.
network drops due to IP address issues -- keep a ping running continuously to the pi.
DNS issues - if a network request hangs due to a DNS query, this could cause some weirdness if not handled properly from within Octopi. Use wireshark to see it's regular traffic, see if you spot a pattern.
Heat-related problems -- the Raspi could be getting too hot, it will shutdown and restart when it does.
Accidentally overclocked -- the raspi boot script defines the proper frequencies that the ARM chip should run at -- if it's been overclocked it might work for a short period of time, but it'll probably be unstable and break like you've described. Refer to the Raspi boot configurations to set a nominal power and speed.
Creality printers are infamous for EMI related communications errors. They are also infamous for being EMI generators. High quality, shielded, short USB cables with Ferrite beads help but don't always eliminate the problem. Rerouting the cables within the printer sometimes helps. Search this forum for "EMI" and you will find multiple topics on the subject along with many options to try.