# Raspberry Pi MQTT Monitor

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<p align="center">
  <img src="./images/rpi-mqtt-monitor-2-min.png" alt="Raspberry Pi MQTT Monitor" />
</p>

The easiest way to track your Raspberry Pi or Ubuntu computer system health and performance in Home Assistant.

* Start monitoring your system in just a few minutes.
* Monitor: cpu load, cpu temperature, free space, used memory, swap usage, uptime, wifi signal quality, voltage and system clock speed.
* Automatic HASS configuration: Supports discovery messages, so no manual configuration in [Home Assistant](https://www.home-assistant.io/) configuration.yaml is needed.
* Automated installation and configuration: you can install it and schedule it with a service or cron with just one command from shell.
* Configurable: You can select what is monitored and how the message(s) is send (separately or as one csv message)
* Easy update: You can update the script by calling it with command line argument --update


## Table of Contents

- [What is new](#what-is-new)
- [CLI arguments](#cli-arguments)
- [Installation](#installation)
  - [Automated](#automated)
  - [Manual](#manual)
- [Configuration](#configuration)
- [Test Raspberry Pi MQTT Monitor](#test-raspberry-pi-mqtt-monitor)
- [Schedule Raspberry Pi MQTT Monitor execution as a service](#schedule-raspberry-pi-mqtt-monitor-execution-as-a-service)
- [Schedule Raspberry Pi MQTT Monitor execution](#schedule-raspberry-pi-mqtt-monitor-execution)
- [How to update](#how-to-update)
- [Home Assistant Integration](#home-assistant-integration)
- [To Do](#to-do)
- [Feature request](#feature-request)

## What is new

* 2024-01-28: Improved error handling for the MQTT connection
* 2024-01-28: Script version is displayed in home assistant device information
* 2024-01-28: Update the script by calling it with command line argument --update
* 2024-01-27: Now you can run the script as a service (systemd) or as a cron job
* 2024-01-27: Support for command line arguments
* 2024-01-27: Added a binary sensor for github to monitor for new versions of the script
* 2024-01-27: Updated the sensors names not to include the device name as per home assistant guidelines
* 2024-01-10: Added support for Raspberry Pi 5 fan speed monitoring (only works on Raspberry Pi 5 with stock fan)

## CLI arguments

```
usage: rpi-cpu2mqtt.py [-h] [--display] [--service] [--version] [--update]

options:
  -h, --help     show this help message and exit
  --display, -d  display values on screen
  --service, -s  run script as a service
  --version, -v  display version
  --update,  -u  update script and config
```



## Installation

### Automated

Run this command to use the automated installation:

```bash
bash <(curl -s https://raw.githubusercontent.com/hjelev/rpi-mqtt-monitor/master/remote_install.sh)
```

Raspberry Pi MQTT monitor will be intalled in the location where the installer is called, inside a folder named rpi-mqtt-monitor.

The auto-installer needs the software below and will install it if its not found:

* python (2 or 3)
* python-pip
* git
* paho-mqtt

Only python is not automatically installed, the rest of the dependancies should be handeled by the auto installation.
It will also help you configure the host and credentials for the mqtt server in config.py and create the cronjob configuration for you.


### Manual

If you don't like the automated installation here are manuall installation instructions (missing the creation of virtual environment).

1. Install pip if you don't have it:

```bash
sudo apt install python-pip
```

2. Then install this python module needed for the script:

```bash
pip3 install paho-mqtt
```

3. Install git if you don't have it:

```bash
apt install git
```

4. Clone the repository:

```bash
git clone https://github.com/hjelev/rpi-mqtt-monitor.git
```

5. Rename ```src/config.py.example``` to ```src/config.py```



## Configuration

(only needed for manual installation)
Populate the variables for MQTT host, user, password and main topic in ```src/config.py```.

You can also choose what messages are sent and what is the delay (sleep_time is only used for multiple messages) between them.
If you are sending a grouped message, and you want to delay the execution of the script you need to use the ```random_delay``` variable which is set to 1 by default.
This is the default configuration (check the example file for more info):

```
random_delay = randrange(1)
discovery_messages = True
group_messages = False
sleep_time = 0.5
service_sleep_time = 120
cpu_load = True
cpu_temp = True
used_space = True
voltage = True
sys_clock_speed = True
swap = True
memory = True
uptime = True
uptime_seconds = False
wifi_signal = False
wifi_signal_dbm = False
rpi5_fan_speed = False
```

If ```discovery_messages``` is set to true, the script will send MQTT Discovery config messages which allows Home Assistant to automatically add the sensors without having to define them in configuration.  Note, this setting is only available when ```group_messages``` is not used.

If ```group_messages``` is set to true the script will send just one message containing all values in CSV format.
The group message looks like this:

```
1.3, 47.1, 12, 1.2, 600, nan, 14.1, 12, 50, -60
```

## Test Raspberry Pi MQTT Monitor

Run Raspberry Pi MQTT Monitor (you might need to update the path in the command below, depending on where you installled it)

```bash
/usr/bin/python3 /home/pi/rpi-mqtt-monitor/rpi-cpu2mqtt.py -d
```

Once you run Raspberry Pi MQTT monitor you should see something like this:

```
:: Device Information
   Model Name: Intel(R) Pentium(R) Silver J5040 CPU @ 2.00GHz
   Manufacturer: GenuineIntel
   OS: Ubuntu 23.10
   Hostname: ubuntu-pc
   IP Address: 192.168.0.200

:: Measured values
   CPU Load: 71.0
   CPU Temp: 68
   Used Space: 11
   Voltage: False
   CPU Clock Speed: False
   Swap: False
   Memory: 67
   Uptime: 0
   Wifi Signal: False
   Wifi Signal dBm: False
   RPI5 Fan Speed: False
   Git Update: off
```
## Schedule Raspberry Pi MQTT Monitor execution as a service

If you want to run Raspberry Pi MQTT Monitor as a service you can use the provided service file.
You need to edit the service file and update the path to the script and the user that will run it.
Then copy the service file to ```/etc/systemd/system/``` and enable it:

```bash
sudo cp rpi-cpu2mqtt.service /etc/systemd/system/
sudo systemctl enable rpi-cpu2mqtt.service
```

To test that the service is working you can run:

```bash
sudo service rpi-cpu2mqtt start
sudo service rpi-cpu2mqtt status
```

## Schedule Raspberry Pi MQTT Monitor execution with a cron

Create a cron entry like this (you might need to update the path in the cron entry below, depending on where you installed it):

```
*/2 * * * * cd /home/pi/rpi-mqtt-monitor; /usr/bin/python /home/pi/rpi-mqtt-monitor/rpi-cpu2mqtt.py
```
## How to update

Remote updates via Home Assistant are now available. 

To use these you need to have the script running as a service. (the installer now supports this)

Manual update:

```bash
cd rpi-mqtt-monitor
python3 src/update.py
```

## Home Assistant Integration

If you are using ```discovery_messages```, then this step is not required as a new MQTT device will be automatically created in Home Assistant and all you need to do is add it to a dashboard.

![Rapsberry Pi MQTT Monitor in Home Assistant](images/rpi-cpu2mqtt-hass.jpg)

Once you installed the script on your raspberry you need to create some sensors in home assistant.

This is the sensors configuration if ```group_messages = True``` assuming your sensors are separated in ```sensors.yaml``` file.

```yaml
  - platform: mqtt
    name: 'rpi4 cpu load'
    state_topic: 'masoko/rpi4'
    value_template: '{{ value.split(",")[0] }}'
    unit_of_measurement: "%"

  - platform: mqtt
    state_topic: 'masoko/rpi4'
    value_template: '{{ value.split(",")[1] }}'
    name: rpi4 cpu temp
    unit_of_measurement: "°C"

  - platform: mqtt
    state_topic: 'masoko/rpi4'
    value_template: '{{ value.split(",")[2] }}'
    name: rpi4 diskusage
    unit_of_measurement: "%"

  - platform: mqtt
    state_topic: 'masoko/rpi4'
    value_template: '{{ value.split(",")[3] }}'
    name: rpi4 voltage
    unit_of_measurement: "V"

  - platform: mqtt
    state_topic: 'masoko/rpi4'
    value_template: '{{ value.split(",")[4] }}'
    name: rpi4 sys clock speed
    unit_of_measurement: "MHz"

  - platform: mqtt
    state_topic: 'masoko/rpi4'
    value_template: '{{ value.split(",")[5] }}'
    name: rpi4 swap
    unit_of_measurement: "%"

  - platform: mqtt
    state_topic: 'masoko/rpi4'
    value_template: '{{ value.split(",")[6] }}'
    name: rpi4 memory
    unit_of_measurement: "%"

  - platform: mqtt
    state_topic: 'masoko/rpi4'
    value_template: '{{ value.split(",")[7] }}'
    name: rpi4 uptime
    unit_of_measurement: "days"

  - platform: mqtt
    state_topic: 'masoko/rpi4'
    value_template: '{{ value.split(",")[8] }}'
    name: rpi4 wifi signal
    unit_of_measurement: "%"

  - platform: mqtt
    state_topic: 'masoko/rpi4'
    value_template: '{{ value.split(",")[9] }}'
    name: rpi4 wifi signal
    unit_of_measurement: "dBm"
```

This is the sensors configuration if ```group_messages = False``` assuming your sensors are separated in ```sensors.yaml``` file.

```yaml
  - platform: mqtt
    state_topic: "masoko/rpi4/cpuload"
    name: rpi4 cpu load
    unit_of_measurement: "%"

  - platform: mqtt
    state_topic: "masoko/rpi4/cputemp"
    name: rpi4 cpu temp
    unit_of_measurement: "°C"

  - platform: mqtt
    state_topic: "masoko/rpi4/diskusage"
    name: rpi4 diskusage
    unit_of_measurement: "%"

  - platform: mqtt
    state_topic: "masoko/rpi4/voltage"
    name: rpi4 voltage
    unit_of_measurement: "V"

  - platform: mqtt
    state_topic: "masoko/rpi4/sys_clock_speed"
    name: rpi4 sys clock speed
    unit_of_measurement: "hz"

  - platform: mqtt
    state_topic: "masoko/rpi4/swap"
    name: rpi4 swap
    unit_of_measurement: "%"

  - platform: mqtt
    state_topic: "masoko/rpi4/memory"
    name: rpi4 memory
    unit_of_measurement: "%"

  - platform: mqtt
    state_topic: "masoko/rpi4/uptime_days"
    name: rpi4 uptime
    unit_of_measurement: "days"

  - platform: mqtt
    state_topic: "masoko/rpi4/wifi_signal"
    name: rpi4 wifi signal
    unit_of_measurement: "%"

  - platform: mqtt
    state_topic: "masoko/rpi4/wifi_signal_dbm"
    name: rpi4 wifi signal
    unit_of_measurement: "dBm"

```

Add this to your ```customize.yaml``` file to change the icons of the sensors.

```yaml
sensor.rpi4_voltage:
  friendly_name: rpi 4 voltage
  icon: mdi:flash
sensor.rpi4_cpu_load:
  friendly_name: rpi4 cpu load
  icon: mdi:chip
sensor.rpi4_diskusage:
  friendly_name: rpi4 diskusage
  icon: mdi:harddisk
sensor.rpi4_sys_clock_speed:
  icon: mdi:clock
sensor.rpi4_cpu_temp:
  friendly_name: rpi4 cpu temperature
sensor.rpi4_swap:
  icon: mdi:folder-swap
sensor.rpi4_memory:
  icon: mdi:memory
```

After that you need to create entities list via the home assistant GUI.
You can use this code or compose it via the GUI.

```yaml
type: entities
title: Rapsberry Pi MQTT monitor
entities:
  - entity: sensor.rpi4_cpu_load
  - entity: sensor.rpi4_cpu_temp
  - entity: sensor.rpi4_diskusage
  - entity: sensor.rpi4_voltage
  - entity: sensor.rpi4_sys_clock_speed
  - entity: sensor.rpi4_swap
  - entity: sensor.rpi4_memory
  - entity: sensor.rpi4_uptime
  - entity: sensor.rpi4_wifi_signal
  - entity: sensor.rpi4_wifi_signal_dbm
  ...
```

## To Do

- maybe add network traffic monitoring via some third party software (for now I can't find a way to do it without additional software)

## Feature request

If you want to suggest a new feature or improvement don't hesitate to open an issue or pull request.
