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Mar 22, 2018   |  By Chris Hartwig
How I used Swarm to rearchitect a monolith. Some decisions take time to make. Should I learn Golang or Elixir? Should I use Docker Swarm or Kubernetes? You start by learning Docker, then you outgrow it when you want to deploy an app on more than one server. But you must choose between Swarm and k8s…
Feb 24, 2018   |  By Chris Hartwig
Say you have a golang project that you will deploy with Docker. You need to build Docker images. You will use Gitlab-CI to automate this task for free. And use the free Gitlab Docker registry. But you want to know exactly what code you’re running, not just what Docker tag.
Jun 23, 2016   |  By Chris Hartwig
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 is about to expire (in 10 days): it’s using Letsencrypt, and it’s been 80 days since I installed the cert.
Jun 7, 2016   |  By Chris Hartwig
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.
Apr 20, 2016   |  By Chris Hartwig
It was in your TodoList: install the SSL certificate. So you’ve setup your SSL certificate on the web server. It’s quite trendy to use SSL. Google will give you a modest ranking bump, some users will feel safer, all is good. You have even tested your configuration with Qualys, got you an A+. Good job: most got a C, even banks. Now what? What will happen when your cert is about to expire? Your CA will send an email to renew your cert. But maybe someone in the accounting dept will get that email.