dvpn_price

Update Sentinel DVPN Node Prices with Market Changes including IBC coin prices based on TWAP (Time Weighted Average Price). Updates the config.toml for hourly and gigabyte prices based on this average and user specified price.

Note

This is for dVPN node versions 0.7.0

We have compiled it into a package distribtion now for cross-compatibility on all amd64 linux systems.

Install (binary)

Download the latest version of dvpn_price from the releases page and extract, i.e., :

wget -O - https://github.com/freQniK/dvpn_price/releases/download/v0.4.3/dvpn_price_v0.4.3.tar.gz | tar xvzf -

Run

We now distribute this as a cross-platform package so untarballing it will product a bin folder where libraries and binaries reside.

$ sudo ./bin/dvpn_price -h
dVPN Price Oracle for dVPN Node operators v0.4.3 - freQniK


usage: dvpn_price.py [-h] [-t days] [-p price] [-q hprice] [-u user]

dVPN Price Oracle for dVPN Node operators v0.4.3 - freQniK

optional arguments:
  -h, --help            show this help message and exit
  -t days, --twap days  Time Weighted Average Price.
  -p price, --price-gb price
                        Set the price per GB you would like to charge in USD.
                        i.e., --price 0.005
  -q hprice, --price-hr hprice
                        Set the price per hour you would like to charge in
                        USD. i.e., --price 0.005
  -u user, --user user  Set the base directory where .sentinelnode/ exists
                        i.e., --user dvpn - implies (/home/dvpn/.sentinelnode)

Where days in --twap is the number of days to average a price over based on market price of the coin for each previous day.

i.e., -p/--price-gb 0.008 - $0.008/GB -q/--price-hr 0.004 - $0.004/hr -t/--twap 7 - Average all IBC and DVPN prices over 7 days

Example

sudo dvpn_price --twap 7 --price-gb 0.008 --price-hr 0.001 --user sentinel

This will average the price of OSMO, SCRT, ATOM, DEC, DVPN over the last 7 days. It will set a price of $0.008/GB and $0.005/hr and change the config.toml in the directory /home/sentinel/.sentinelnode/config.toml

Note

Be sure to run this as sudo as the config directory is root permissions only.

Install (source)

sudo apt install python3-pip
sudo pip install toml pycoingecko

Run (from source)

sudo ./dvpn_price.py -h

Cronjob

You can also create a cronjob (as root) to have this run every week, every month, every day, every hour, every minute. Just be sure to restart your node eventually for the changes to take place.

Example

sudo crontab -e

Place the following line at the bottom of the file:

59 12 * * * /home/sentinel/bin/dvpn_price --twap 7 --price-gb 0.008 --price-hr 0.001 --user sentinel

This will update your sentinel node config.toml every day at 12:59 p.m.

Cronjob Helper Script

I have included a helper script for those node runners who are hosting many nodes. This script will SSH to all your node boxes and set up the cronjobs respectively.

dvpn-price-cronjob.sh

Open the file and edit the lines where it asks and fill in your values.