In this article, we will explain how we are using Rocket.chat as our internal chat and how we deploy this tool. You can use IRC, Jabber (XMPP) or any other "modern" chat system: Slack, Rocket.Chat, etc. After using XMPP for a couple of months, we decided to move to Rocket.Chat.

At Bleemeo, as many geeks, we use a couple of tools on a day to day basis. Most of those tools are small Open Source web applications and, to be trendy, we deploy those tools with Docker. In the past, we used to create a virtual machine per service, deploy the tool and configure web server on each machine. Moreover if you are using https, you need to deploy certificates and private keys on each server.

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SSLping was born as a side project. It’s useful to people, which is cool, but today it was also helpful to me! I use it to monitor my HTTPS websites. This morning, my own SSLping project sent me an email about how my website https://hire.chris-hartwig.com is about to expire (in 10 days): it’s using Letsencrypt, and it’s been 80 days since I installed the cert.

TL;DR you’re never done with Let’s encrypt: once your servers are secure, you must ensure they stay that way. Let’s encrypt is a no brainer: this initiative benefits us all, with free domain-validated certificates. It’s easy to setup and free. There’s probably automatic installation for your web server of choice, the community behind it can help, and tutorials are everywhere. Then you head to https://.com and you’re done… not.