Oblyk RoRVsWild Agent

Oblyk uses the very good rorvswild tool to monitor its API server. This project is a minimal installation of Ruby On Rails with the RoRVsWild Gem to collect metrics from the front and database servers and aggregate them in the monitoring back office.

• Ruby version : 3.1.2
• Rails version : 7.0.7

From scratch installation on Debian server

Note: "Deployment" is managed by pulling the 'oblyk-ror-agent' repository via git.
Note 2: The following approach works for Oblyk's servers, I'm documenting my approach so that you can get inspired. Adapt the following to your needs and environment.

On your local computer

Create a lightness Ruby on Rails app on your personal computer.

rails new oblyk-ror-agent --api
cd oblyk-ror-rails

Install ror-vs-wild gem Follow RoRVsWild instruction : https://github.com/BaseSecrete/rorvswild

On your production serveur

Installing the minimum for rails to work :

• sqlite3 (apt install sqlite3)
• ruby (preferably with rbenv? https://github.com/rbenv/rbenv) version 3.2.1 for this project (problem ? see troubleshooting 1)
• bundler

Tips : for install rbenv and bundler follow this guide : https://www.digitalocean.com/community/tutorials/how-to-install-ruby-on-rails-with-rbenv-on-debian-8 until gem install bundler

Clone oblyk-ror-agent on your server :

cd /path/to/your/applications
git clone https://github.com/oblyk/oblyk-ror-agent.git

Install gem

bundle

(problem ? see troubleshooting 2)

Copy local_env.example.yml

cp config/local_env.example.yml config/local_env.yml
nano config/local_env.yml
# enter your RorVsWild key

Create your config/master.key file

test if it works :

RAILS_ENV=production bundle exec rails s

Go to your RorVsWild back office, tab : server
Your data influx?

Start or kill app

Run your application in background with nohup :

cd /your/app/folfer/
RAILS_ENV=production nohup bundle exec rails s &

Note : for some reason running server rails in --daemon mode does not work

Check that your app is running

ps -aux | grep puma

to kill app :

kill `cat /your/app/folfer/tmp/pids/server.pid`

Troubleshooting

1. Problem installing ruby version

If installing a ruby version takes a long time and blocks on 'install openssl ...'
Try installing libssl-dev

sudo apt-get install libssl-dev

2. Problem installing pschy when install gem

If you get this error when installing gems :

An error occurred while installing psych (5.1.0), and Bundler cannot continue.

Try installing libyaml-dev

sudo apt-get install libyaml-dev