The mqtt_input service runs the phpmqtt_input script which subscribes to MQTT topics and posts data to local Emoncms. It’s used on the emonSD which is running on emonPi / emonBase. Following on from mqtt_input script debugging, see threads: [image] Adding a node with MQTT problem E…

Okay, sussed it! My fault! There was another “edit” I had made and overlooked. Lastest emonSD image updates on every reboot! opened 01:05PM - 26 Dec 16 UTC (UTC) closed 07:35PM - 27 Dec 16 UTC (UTC) …

Argh Systemd - where to start with that… It’s supposed to be the fix-all solution to everything, and to some extent it is, but we’re at the point where there are some stupid dependancies relating to desktop type services that now rely on systemd, crazy IMO. As for logging - there are usually two w…

[image] jimmy: Having the ability to grep, awk and other text manipulation commands is vital for us for debugging Yup, totally agree. The systemd logs can be outputted as text using journalctl then the usual text manipulation tools can be applied. sudo journalctl -f -u mqtt_input -o cat | gr…

I should point out that all my changes do - is revert to using the /var/log/mqtt_input.log rather than using /var/log/daemon.log as systemd will do by default. You / We still need to work out why when I updated the init.d script was removed but the systemd script was not added.

I tried sudo journalctl -f -u mqtt_input -o cat | grep emontx ( and some similar searches) before changing anything and found it worked ok prior to the tag being added, also there is no time and date printed can that be set in command line? Since updating emonpi I am unable to restart the service a…

[image] Andy_Taylor: I should point out that all my changes do - is revert to using the /var/log/mqtt_input.log rather than using /var/log/daemon.log as systemd will do by default. What changes are these? Sorry if I missed something. As I’m typing this, your order has just been shipped …

The changes are the ones a few posts up where I pasted a copy of the systemd unit file I modified to make mutt_input log to the correct file again.

@glyn.hudson thanks the correction fixed the unit issue, unfortunately your alternative log option doesn’t seem to work, even after reloading and restarting the unit the logs still go to the daemon.log, although I can now see the “mqtt_inpu” tag in place of the “php” tag. pi@emonpi(rw):~$ tail /va…

Apologies, I missed your post above. Got it now, thanks. Is possible I would like to move to using the systemd journal log, this seems to be the preferred way to go ‘all-in’ with systemd. This is how nodeRED runs. I have been looking at the nodeRED unit file as an example. However, it would be goo…

[image] pb66: I tried sudo journalctl -f -u mqtt_input -o cat | grep emontx ( and some similar searches) before changing anything and found it worked ok prior to the tag being added, also there is no time and date printed can that be set in command line? Yes adding -o short instead of -o cat …

[image] Andy_Taylor: One other note - running the update failed on my Pi - the init.d script was removed, but the systemd unit file was not added to /etc/systemd/system - check that you have the file system writable at that point in the script… I’ve just tested again on a fresh emonPi and the…

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Mqtt_input script run as systemd instead of initd

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