[docs] Add quickstart tutorial to README

[nemesifier]

We need a quickstart that helps first time users to set up and understand the monitoring system.

Let's add more points to this issue!

• recommend setting openwisp-config management_interface option
• explain how to trigger monitoring checks without management interface (valid only if openwisp is in the same layer2 network)
• explain how default checks are created
• explain difference between active checks and passive metric collection
• explain that openwrt-openwisp-monitoring is needed for some features to work (point out which features)

[minhng99]

I'd like the quickstart to mentioned about ansible installed it into a virtual environment in /opt/openwisp2 which all the other openwisp-* modules located at and it doesn't need to be installed on the real OS, this got me really frustrated at first. Also about the supervisorctl is for restarting the service.

[chanduaki]

Summary

we are using the Freeradius Sucessfully for the Network Authentication & Authorisation we want to monitor our device , we had configured the Openwisp monitoring on the same system to Track the CPU, RAM stats etc When we are cloned the repo and added the device , it shows device is adding but there is no Stats in the Charts

Steps executed

• Cloned the repo from github (https://github.com/openwisp/openwisp-monitoring)

  git clone https://github.com/openwisp/openwisp-monitoring.git

• Navigated to path and build &run the docker

  cd openwisp-monitoring docker-compose up --build

• Accessing the openwispmonitoring at localhost:8000

• Login into portal with username: admin , password: admin

In the Admin Panel

• Navigated to Home › Network Configuration › Devices › Add Device Name: mac address of the device Organization:default Key: given the Ubuntu Machine unique key(cat etc/machine-id) Mac Address: mac address of the device Model: CPU Model Operating system:Ubuntu 20.04 SOC / CPU: Intel Notes: NA

• Configuration Configuration: #1

  • Backend: OPENWRT
  • Configuration status:modified (its by default, it is a readable field)

  • Templates:

    • Click on Plus and added a Template with configuration

    config system 'system' option hostname 'OpenWRT' option timezone 'UTC' option zonename 'UTC'

    package network

    config globals 'globals'

    config interface 'samo' option auto '1' option enabled '1' option ifname 'samo' option mtu '1500' option proto 'none'

Need clarification about the configuration variables (key, value) here we had given as key ping and value 30 can you tell what are the values does we have to given in the key, value

• Under templates , selected Monitoring (default) , sample template
• Clicked on SaVE
• Device is Added Sucessfully
• Device Shows State as Unkown, not changing to any other

Queries

• Where could we miss the steps during the implementation

[nemesifier]

@chanduaki have you set management_interface in /etc/config/openwisp?

What happens if you input these commands on the OpenWRT device?

which netjson-monitoring
netjson-monitoring
which openwisp-monitoring
openwisp-monitoring

[chanduaki]

@nemesisdesign i havent set management_interface in /etc/config/openwisp

 /etc/config/openwisp
bash: /etc/config/openwisp: No such file or directory

Can you please tell how can we set in '/etc/config/openwisp'. It sgows that No such file or directory

[nemesifier]

@chanduaki did you install openwisp-config in your OpenWRT device?