I have managed to install node red on a ubuntu server and start it via systemd. Where does the log go to and how can I set the file the log shall go to. In specific I am looking for all logs on access attempts.

[image] Colin: StandardOutput=append:/full/path/to/file.log StandardError=append:/full/path/to/file.log I confirm, this works for me!!! Now I have the log-entries in a separate file. Will see how I can process it with fail2ban. Thanks for help!

Assuming that you installed using the recommended method for ubuntu, by default it goes to syslog and to the journal, accessible using journaltcl, which is used by node-red-log. To send it elsewhere I think you should be able to redirect stdout and stderr to a file in the systemd script.

yes, I installed according to the docu. I have found some systemd start file at /lib/systemd/system/nodered.service To be honest, I expected it somewhere under /etc/systemd/ I will check how to reroute stdout since I am not very much familiar with the syntax on systemd start-files. Thanks for th…

[image] khfischbach: I have found some systemd start file at /lib/systemd/system/nodered.service To find where the script is you can run sudo systemctl status nodered The output includes where the script is. I think you should just be able to add to the end of the ExecStart command in the…

[image] Colin: I think you should just be able to add to the end of the ExecStart command in the script >> full/path/to/outfile 2>&1 No, that doesn't appear to work. This is probably the right route. https://nodered.org/docs/user-guide/runtime/logging

To view the logs, use journalctl, see the docs for systemd for details. By default, I believe that the journals are not persisted to disk but you can change that. My custom startup is called nrmain so to see and follow the log, this works: sudo journalctl -u nrmain -f -n 500 -o cat --no-hostname…

This does work to redirect to a file if journalctl does not do what you want, add to the systemd script, after the ExecStart line StandardOutput=append:/full/path/to/file.log StandardError=append:/full/path/to/file.log

To use journalctl with the standard install use -u nodered

[image] TotallyInformation: journalctl If I am not wrong, journalctl catches entries of syslog. And with param -u nrmain you filter on one specific service. Since NR logs to syslog already (I checked that) with service "Node-RED", I could filter syslog by this. I think I will use syslog-ng …

[image] Colin: This does work to redirect to a file if journalctl does not do what you want, add to the systemd script, after the ExecStart line Assumes systemd > v240 On my Raspberry Pi I have v241. systemctl --version

[image] jbudd: systemctl --version systemd 249 (249.11-0ubuntu3.10)

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Where does the node red log go to

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khfischbach 2 October 2023 14:59 12

I confirm, this works for me!!!

Now I have the log-entries in a separate file. Will see how I can process it with fail2ban.

Thanks for help!

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Where does the node red log go to

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