Sentinel is an autonomous agent for persisting, processing and automating Innova governance objects and tasks.

Sentinel is implemented as a Python application that binds to a local version innovad instance on each Innova Masternode.

This guide covers installing Sentinel onto an existing Masternode in Ubuntu 14.04 / 16.04.

Make sure Python version 2.7.x or above is installed:

python --version

Update system packages and ensure virtualenv is installed:

$ sudo apt-get update
$ sudo apt-get -y install python-virtualenv

Make sure the local Innova daemon running is at least version 12.1 (120100)

$ innova-cli getinfo | grep version

Clone the Sentinel repo and install Python dependencies.

$ git clone https://github.com/innovacoin/sentinel.git && cd sentinel
$ virtualenv ./venv
$ ./venv/bin/pip install -r requirements.txt

Set up a crontab entry to call Sentinel every minute:

$ crontab -e

In the crontab editor, add the lines below, replacing '/home/YOURUSERNAME/sentinel' to the path where you cloned sentinel to:

* * * * * cd /home/YOURUSERNAME/sentinel && ./venv/bin/python bin/sentinel.py >/dev/null 2>&1

Test the config by runnings all tests from the sentinel folder you cloned into

$ ./venv/bin/py.test ./test

With all tests passing and crontab setup, Sentinel will stay in sync with innovad and the installation is complete

An alternative (non-default) path to the innova.conf file can be specified in sentinel.conf:

innova_conf=/path/to/innova.conf

To view debug output, set the SENTINEL_DEBUG environment variable to anything non-zero, then run the script manually:

$ SENTINEL_DEBUG=1 ./venv/bin/python bin/sentinel.py