About

My plans with this project was to evaluate the quality of service of my ISP, with periodical tests along the day.

The config file that I use for Telegraf execute a speedtest test every 1 hour, you can change that in input.exec - interval

Configuring the repositories

1. Necessary tools

   sudo apt-get install -y apt-transport-https dirmngr gnupg1 
   sudo apt-get install -y software-properties-common wget

2. Influx Repository

   wget -qO- https://repos.influxdata.com/influxdb.key | sudo apt-key add -
   source /etc/os-release
   echo "deb https://repos.influxdata.com/debian $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/influxdb.list

3. Grafana

   wget -q -O - https://packages.grafana.com/gpg.key | sudo apt-key add -
   
   ## Stable OSS Repository
   echo "deb https://packages.grafana.com/oss/deb stable main" | sudo tee -a /etc/apt/sources.list.d/grafana.list 
   
   ## Beta OSS Repository
   echo "deb https://packages.grafana.com/oss/deb beta main" | sudo tee -a /etc/apt/sources.list.d/grafana.list

4. Speedtest

   sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 379CE192D401AB61
   echo "deb https://ookla.bintray.com/debian $(lsb_release -sc) main" | sudo tee  /etc/apt/sources.list.d/speedtest.list

   More information about the installation of speedtest cli on: https://www.speedtest.net/apps/cli

Installing the TIC stack and Grafana

1. Install

   sudo apt clean all
   sudo apt update
   sudo apt install -y influxdb telegraf chronograf grafana speedtest

2. Auto start on startup

   sudo systemctl enable --now {grafana-server,influxdb,telegraf}

Configuration

---

1. InfluxDB

   1.1 You need to edit the /etc/influxdb/influxdb.conf

   1.2 You can use your on configuration or this influxdb.conf.

   Note: This configuration file is very simple and should be revised to work with your environment.

   1.3 After editing you gonna need restart the service InfluxDB

   sudo systemctl restart influxdb

   OPTIONAL 1.4 Create a admin user

   CREATE USER <username> WITH PASSWORD '<password>' WITH ALL PRIVILEGES

   1.5 Edit /etc/influxdb/influxdb.conf and change the value of auth-enable from false to true then restart the influx server with the command:

   sudo systemctl restart influxd

2. Telegraf

   1.1 You need to edit the /etc/telegraf/telegraf.conf

   1.2 You can use your on configuration our this telegraf.conf.

   If you user your config, you gonna need to add un [[inputs.exec]], as following, this will execute the speedtest-cli, with 60minutes interval, and return a JSON and store it in your configured [[outputs.influxdb]].

   [[inputs.exec]]
   commands = ["/usr/bin/speedtest -f json-pretty"]
   name_override = "Speedtest"
   timeout = "5m"
   interval = "60m"
   data_format = "json"
   json_string_fields = [
     "host",
     "interface_externalIp",
     "server_name",
     "server_id",
     "server_location",
     "server_host",
     "server_ip",
     "result_url"
     ]

3. Grafana

   3.1 Configuring Grafana Server to run on port 80

   3.2 Edit /etc/grafana/grafana.ini, uncomment the line http_port = 3000 and change to http_port = 80

   3.3 Allow the binary to run in port 80

   sudo setcap 'cap_net_bind_service=+ep' /usr/sbin/grafana-server

   Note: This command need to be executed every time that you update your grafana.

   3.4 Configure the InfluxDB datasource. Grafana Doc

   3.5 Import the dashboard TICK - Speedtest-External or through Grafana site with:

   ID 12618 - https://grafana.com/grafana/dashboards/12618

   

4. Speedtest
   4.1 Run a speedtest test and accept the EULA if you agree

   speedtest -f json-pretty

   4.2 Copy the .config folder in your home to /etc/telegraf/ and set the permissions

   ## copy the .config folder in your home to /etc/telegraf/
   cp -R ~/.config /etc/telegraf
   
   ## set permissions for telegraf
   chown -R telegraf /etc/telegraf/.config

Troubleshooting

1. Slow speed on downloads in raspberry pi:

   sudo sysctl -w net.core.rmem_max=8388608
   sudo sysctl -w net.core.wmem_max=8388608
   sudo sysctl -w net.core.rmem_default=65536
   sudo sysctl -w net.core.wmem_default=65536
   sudo sysctl -w net.ipv4.tcp_rmem='4096 87380 8388608'
   sudo sysctl -w net.ipv4.tcp_wmem='4096 65536 8388608'
   sudo sysctl -w net.ipv4.tcp_mem='8388608 8388608 8388608'
   sudo sysctl -w net.ipv4.route.flush=1