Gradually turn on lights.

[toggledbits]

Looks like you haven't set the User= line correctly in the reactor.service file. It should be the name of the user that owns the directory in which Reactor is installed. While you are at it, check the pathname to the Reactor install (in the WorkingDirectory and Environment keys), and the pathname to the node executable used in the ExecStart key. If you're not sure where your node lives, just type which node on the command line and it will tell you.

[Matteburk]

I checked and changed the lines to this ( I guess something is wrong there)
[Unit]
Description=Multi System Reactor
After=network.target

[Service]
Type=simple
User=pi
WorkingDirectory=/home/pi/reactor
Environment=NODE_PATH=/home/pi/reactor
ExecStart=/home/pi/.local/lib/nodejs/node-v14.15.4-linux-armv7l/bin/node

Restart=on-failure
RestartSec=5s

[Install]
WantedBy=multi-user.target

and restarted reactor....... then I see this in log.....

Sep 5 15:26:16 raspberrypi systemd[9870]: reactor.service: Failed to determine user credentials: No such process
Sep 5 15:26:16 raspberrypi systemd[9870]: reactor.service: Failed at step USER spawning /usr/local/lib/nodejs/bin/node: No such process
Sep 5 15:26:16 raspberrypi systemd[1]: reactor.service: Main process exited, code=exited, status=217/USER
Sep 5 15:26:16 raspberrypi systemd[1]: reactor.service: Failed with result 'exit-code'.
Sep 5 15:26:21 raspberrypi systemd[1]: reactor.service: Service RestartSec=5s expired, scheduling restart.
Sep 5 15:26:21 raspberrypi systemd[1]: reactor.service: Scheduled restart job, restart counter is at 20060.
Sep 5 15:26:21 raspberrypi systemd[1]: Stopped Multi System Reactor.
Sep 5 15:26:21 raspberrypi systemd[1]: Started Multi System Reactor.
Sep 5 15:26:21 raspberrypi systemd[9871]: reactor.service: Failed to determine user credentials: No such process
Sep 5 15:26:21 raspberrypi systemd[9871]: reactor.service: Failed at step USER spawning /usr/local/lib/nodejs/bin/node: No such process
Sep 5 15:26:21 raspberrypi systemd[1]: reactor.service: Main process exited, code=exited, status=217/USER
Sep 5 15:26:21 raspberrypi systemd[1]: reactor.service: Failed with result 'exit-code'.
Sep 5 15:26:22 raspberrypi systemd[1]: Reloading.
Sep 5 15:26:22 raspberrypi systemd[1]: /etc/systemd/system/teamviewerd.service:8: PIDFile= references path below legacy directory /var/run/, updating /var/run/teamviewerd.pid \u2192 /run/teamviewerd.pid; please update the unit file accordingly.
Sep 5 15:26:26 raspberrypi systemd[1]: reactor.service: Service RestartSec=5s expired, scheduling restart.
Sep 5 15:26:26 raspberrypi systemd[1]: reactor.service: Scheduled restart job, restart counter is at 20061.
Sep 5 15:26:26 raspberrypi systemd[1]: Stopped Multi System Reactor.
Sep 5 15:26:26 raspberrypi systemd[1]: Started Multi System Reactor.
Sep 5 15:26:27 raspberrypi systemd[1]: reactor.service: Succeeded.
Sep 5 15:26:42 raspberrypi systemd[1]: Started Multi System Reactor.
Sep 5 15:26:43 raspberrypi systemd[1]: reactor.service: Succeeded.
Sep 5 15:34:06 raspberrypi systemd[1]: Started Multi System Reactor.
Sep 5 15:34:06 raspberrypi systemd[1]: reactor.service: Succeeded.

[toggledbits]

It looks like it's referring to a different pathname for nodejs than you have configured in the service file. Did you make a change to that value somewhere along the way? If you make any changes to the config file, you need to do sudo systemctl daemon-reload to get systemd to read the updated config file. So the first step is to try sudo systemctl daemon-reload followed by sudo systemctl restart reactor.

If that doesn't work, it is reported elsewhere that sudo systemctl daemon-reexec may resolve this (or perhaps simply rebooting the whole system).

Then step three, if you're still not successful, is to see if Reactor is logging anything in its own log files.

[Matteburk]

@toggledbits

I have followed your instructions but no success.

Dont no what to do..... Here is the log from msr
/Mattias

Require stack:

• /home/pi/reactor/server/lib/Engine.js
• /home/pi/reactor/server/lib/httpapi.js
• /home/pi/reactor/app.js
  Error: Cannot find module 'common/util'
  Require stack:
• /home/pi/reactor/server/lib/Engine.js
• /home/pi/reactor/server/lib/httpapi.js
• /home/pi/reactor/app.js
  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
  at Function.Module._load (internal/modules/cjs/loader.js:725:27)
  at Module.require (internal/modules/cjs/loader.js:952:19)
  at require (internal/modules/cjs/helpers.js:88:18)
  at Engine._get_lexp_extensions (/home/pi/reactor/server/lib/Engine.js:862:25)
  at Rule.evaluateExpressions (/home/pi/reactor/server/lib/Rule.js:904:330)
  at Rule._evaluate (/home/pi/reactor/server/lib/Rule.js:994:344)
  at runMicrotasks (<anonymous>)
  at processTicksAndRejections (internal/process/task_queues.js:93:5)
  at async /home/pi/reactor/server/lib/Rule.js:963:17
  2021-09-06T16:19:30.352Z Rule:5:980:Rule.js Rule#rule-ksn5u2pn._evaluate() mutex acquired, evaluating
  2021-09-06T16:19:30.352Z Rule:5:984:Rule.js Rule#rule-ksn5u2pn update rate is 0/min limit 60/min
  2021-09-06T16:19:30.353Z Rule:5:904:Rule.js Rule#rule-ksn5u2pn evaluateExpressions() with 0 expressions
  2021-09-06T16:19:30.354Z Rule:CRIT Error: Cannot find module 'common/util'
  Require stack:
• /home/pi/reactor/server/lib/Engine.js
• /home/pi/reactor/server/lib/httpapi.js
• /home/pi/reactor/app.js
  Error: Cannot find module 'common/util'
  Require stack:
• /home/pi/reactor/server/lib/Engine.js
• /home/pi/reactor/server/lib/httpapi.js
• /home/pi/reactor/app.js
  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
  at Function.Module._load (internal/modules/cjs/loader.js:725:27)
  at Module.require (internal/modules/cjs/loader.js:952:19)
  at require (internal/modules/cjs/helpers.js:88:18)
  at Engine._get_lexp_extensions (/home/pi/reactor/server/lib/Engine.js:862:25)
  at Rule.evaluateExpressions (/home/pi/reactor/server/lib/Rule.js:904:330)
  at Rule._evaluate (/home/pi/reactor/server/lib/Rule.js:994:344)
  at runMicrotasks (<anonymous>)
  at processTicksAndRejections (internal/process/task_queues.js:93:5)
  at async /home/pi/reactor/server/lib/Rule.js:963:17
  2021-09-06T16:19:30.356Z Rule:5:980:Rule.js Rule#rule-ksm11ihr._evaluate() mutex acquired, evaluating
  2021-09-06T16:19:30.356Z Rule:5:984:Rule.js Rule#rule-ksm11ihr update rate is 0/min limit 60/min
  2021-09-06T16:19:30.357Z Rule:5:904:Rule.js Rule#rule-ksm11ihr evaluateExpressions() with 0 expressions
  2021-09-06T16:19:30.358Z Rule:CRIT Error: Cannot find module 'common/util'
  Require stack:
• /home/pi/reactor/server/lib/Engine.js
• /home/pi/reactor/server/lib/httpapi.js
• /home/pi/reactor/app.js
  Error: Cannot find module 'common/util'
  Require stack:
• /home/pi/reactor/server/lib/Engine.js
• /home/pi/reactor/server/lib/httpapi.js
• /home/pi/reactor/app.js
  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
  at Function.Module._load (internal/modules/cjs/loader.js:725:27)
  at Module.require (internal/modules/cjs/loader.js:952:19)
  at require (internal/modules/cjs/helpers.js:88:18)
  at Engine._get_lexp_extensions (/home/pi/reactor/server/lib/Engine.js:862:25)
  at Rule.evaluateExpressions (/home/pi/reactor/server/lib/Rule.js:904:330)
  at Rule._evaluate (/home/pi/reactor/server/lib/Rule.js:994:344)
  at runMicrotasks (<anonymous>)
  at processTicksAndRejections (internal/process/task_queues.js:93:5)
  at async /home/pi/reactor/server/lib/Rule.js:963:17

[Crille]

@matteburk Try installing 21200 just to see if you get MSR running again.

[toggledbits]

The messages in the log you posted indicate that NODE_PATH is incorrectly set, so I now cannot be sure if we're back at your original problem because you have tried to run it from the command line and this log is from that, or if this log is from an attempted systemd startup, which makes no sense because the service file you published earlier sets the environment variable correctly.

I've given you everything you need to get going again. I'm not sure what else to do. You need to figure it out, though, because this is how this and all future builds will be working, and right now, you're the only person I know of that isn't running, so I'm assuming its a local configuration issue and not a package/software issue.

Can you stop any local startup, start again with systemd, and post the startup portion of the log file? I don't want to see the error message again, I need to see all the messages from a Reactor startup under systemd. That will start with the string Reactor <version> starting on <nodejs version> and give me everything up to Startup complete.

[Matteburk]

@toggledbits ok... yes for sure it is me setting something up wrong... will struggle some more...

[Matteburk]

@crille tried .....

[Matteburk]

@toggledbits
I dont see the string reactor version starting on XXXX as you wrote.

From the var/log syslog I get this after stopped and started reactor via systemctl restart reactor

Sep 6 20:58:49 raspberrypi systemd[1]: Started Multi System Reactor.
Sep 6 20:58:50 raspberrypi systemd[1]: reactor.service: Succeeded.
Sep 6 21:00:41 raspberrypi dbus-daemon[402]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.57' (uid=1000 pid=1071 comm="/usr/lib/chromium-browser/chromium-browser-v7 --fo")
Sep 6 21:00:41 raspberrypi systemd[1]: Starting Hostname Service...
Sep 6 21:00:41 raspberrypi dbus-daemon[402]: [system] Successfully activated service 'org.freedesktop.hostname1'
Sep 6 21:00:41 raspberrypi systemd[1]: Started Hostname Service.

[toggledbits]

In reactor.log

[Matteburk]

@toggledbits
hmmm nothing is being logged there after stop ,start. the log file has not been updated since I tried node app.js for a couple of hours ago

[toggledbits]

OK. Post that startup, then. It will tell me a few things as well.

[toggledbits]

Wait, I'm really confused, you said "nothing is being logged there after stop ,start". Then where did the stuff you posted here come from?

[Matteburk]

@toggledbits they that you refer to are there but nothing after I now stopped and started

[Matteburk]

@toggledbits But if I no try to start via node app.js
I get in terminal window

pi@raspberrypi:~ $ node app.js
internal/modules/cjs/loader.js:883
throw err;
^

Error: Cannot find module '/home/pi/app.js'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
at Function.Module._load (internal/modules/cjs/loader.js:725:27)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
at internal/main/run_main_module.js:17:47 {
code: 'MODULE_NOT_FOUND',
requireStack: []
}
pi@raspberrypi:~ $

[toggledbits]

Well that's because you're not in the Reactor directory.

[Matteburk]

@toggledbits
Gaaah..... im tired and beginner.....Sorry....

ok so this I no get when I run node app.js

2021-09-06T19:59:36.893Z Rule:5:980:Rule.js Rule#rule-kmst5xze._evaluate() mutex acquired, evaluating
2021-09-06T19:59:36.894Z Rule:5:984:Rule.js Rule#rule-kmst5xze update rate is 1/min limit 60/min
2021-09-06T19:59:36.895Z Rule:5:904:Rule.js Rule#rule-kmst5xze evaluateExpressions() with 0 expressions
2021-09-06T19:59:36.897Z Rule:CRIT Error: Cannot find module 'common/util'
Require stack:

• /home/pi/reactor/server/lib/Engine.js
• /home/pi/reactor/server/lib/httpapi.js
• /home/pi/reactor/app.js
  Error: Cannot find module 'common/util'
  Require stack:
• /home/pi/reactor/server/lib/Engine.js
• /home/pi/reactor/server/lib/httpapi.js
• /home/pi/reactor/app.js
  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:880:15)
  at Function.Module._load (internal/modules/cjs/loader.js:725:27)
  at Module.require (internal/modules/cjs/loader.js:952:19)
  at require (internal/modules/cjs/helpers.js:88:18)
  at Engine._get_lexp_extensions (/home/pi/reactor/server/lib/Engine.js:862:25)
  at Rule.evaluateExpressions (/home/pi/reactor/server/lib/Rule.js:904:330)
  at Rule._evaluate (/home/pi/reactor/server/lib/Rule.js:994:344)
  at processTicksAndRejections (internal/process/task_queues.js:93:5)
  at async /home/pi/reactor/server/lib/Rule.js:963:17

[toggledbits]

Right. And we've covered that. If you run it from the command line, you need to use

    NODE_PATH=$(pwd) node app

Do that, and please post (a) the startup messages from logs/reactor.log as specified in my previous post, and (b) the contents of /etc/systemd/system/reactor.service again.

[Matteburk]

@toggledbits

We have a winner!

I did
cd reactor
NODE_PATH=$(pwd) node app ( this line I totally missed)

and my house lit up like a Christmas trea!

Thank you for your patience with me Patrick!

[toggledbits]

No, we're not done. That's not the way to run Reactor. You need to be running it under systemd. Please provide the information above as requested.