Cloudflare Domains doesn’t work with Digitalocean Droplets

When registering a new domain on Cloudflare, you need to keep two things in mind:

They don’t allow their domains to have non Cloudflare-branded nameservers. Which means that while the domain lives on Cloudflare, its DNS records will also have to stay.
Even newly registered domains have SSL/TLS configured to Full, so if you’re starting out with a new server, certbot will fail because HTTP traffic is not allowed.

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Git, Tools, Ubuntu

How to Auto-Deploy to Server on Git Push

Goal:

If git push on master branch
Then sync files onto server and deploy (e.g., running yarn run build or any other scripts)

I’m on DigitalOcean’s server, but this works on any self hosted servers.

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DigitalOcean: ssh Permission denied (publickey) when SSH as Created User

Allowing password login will undermine the safety of server, so instead we can set up SSH login for each user.

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Can’t Login to WordPress wp-admin after Change of URL

Steps to change site URL without visual login panel:

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OS X, Rails, Ruby

DigitalOcean: How To Create A Rails App with Git Auto Deploy

What we want to achieve:

one click create a working version of rails project on DigitalOcean
set up a local working version of the project
set up remote & local git repo so we could push to update remote rails project folder
and deploy automatically with push

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