Recently, I provisioned a new Elasticsearch cluster. The installation process on Ubuntu used the apt package manager and everything looked good. I started the application as soon as Elasticsearch booted and was ready for connections. The app connected to the database, everything looked good. Yet, the Elastic SDK failed while …

We ran into the following error when creating Docker-based GitHub Actions: the “standard_init_linux.go:211: exec user process caused „no such file or directory“” Everything worked locally and the Dockerfile looked good as well. Yet, when pushing the code to the build server (in this case GitHub), building …

Ubuntu/Debian — How to Unzip Into a Folder You may download a ZIP file from the Internet and need to unzip it to a specific directory. On Unix and Linux, you can stay in the command line and unzip a packaged ZIP file to the folder of your choice! {{outline} …

Cron jobs are a nice way to automatically run scheduled tasks. The cron service in Linux systems is the typical approach when scheduling commands on the operating system. {{outline}} Testing a Cron Job Recently the certbot from Let’s Encrypt didn’t automatically renew SSL certificates anymore. We used a …

We recently provisioned a new Debian VM and noticed that the sudo command wasn’t available. Our typical workflow includes the sudo command at the beginning of commands. The good news: you can install the sudo command on Debian and give your user the “sudo” permissions. {{outline}} Install the “sudo” …

Running an Ubuntu or Debian operating system on your servers comes with a long lifetime. You won’t switch servers and migrate your applications that often. You’ll maintain your system now and then and update installed packages to keep your system secure. Recently, while maintaining the software on our …

Installing packages with the apt-get package manager on Ubuntu or Debian usually fetches the latest known version from the repositories. This is a comfortable behavior to use an up-to-date version of the package. If you want to install a specific package version, you can do that by appending an equal …

CoreOS is suited for all kinds of use cases. In the previous blog posts we’ve shown you how to submit and run a Node.js application inside a Docker container on a CoreOS cluster and also how to scale this Node.js app to multiple instances across the cluster. …