Logging

Developer

Turn on our distrubted objects name-server if it has not been done already. If you are about to run this command, do not close the terminal.
```
$ python -m Pyro4.naming
```
Open up another terminal and run our service, make sure we have the above code running before running the code below.
```
$ python logging_service.py
```
(OPTIONAL) You can try out the fake data logger too.
```
$ python fake_logging_service.py
```
Open up another terminal and run the colling command to verify our service is working:
```
$ pyro4-nsc list
```

Production

This micro-service is found in the mikapod/logging_service.py file and is responsible for polling the latest instrumentation data and saving it to our local persistent storage.

While being logged in as pi run the following:

$ sudo vi /etc/systemd/system/mikapod_logging.service

Copy and paste the following contents.

[Unit]
Description=Mikapod Data Logging Daemon
After=multi-user.target

[Service]
Type=idle
ExecStart=/home/pi/mikapod-soil-rpi/scripts/logging.sh
Restart=on-failure
KillSignal=SIGTERM

[Install]
WantedBy=multi-user.target

We can now start the Gunicorn service we created and enable it so that it starts at boot:
```
sudo systemctl start mikapod_logging
sudo systemctl enable mikapod_logging
```

Confirm our service is running.

sudo systemctl status mikapod_logging.service

If the service is working correctly you should see something like this at the bottom:
```
raspberrypi systemd[1]: Started Mikapod Data Logging Daemon.
```
Congradulations, you have setup data logging micro-service! This service will be polling the latest instrumentation data and storing it in our persistent storage.
If you see any problems, run the following service to see what is wrong. More information can be found in this article.
```
sudo journalctl -u mikapod_logging
```