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. …

This post is a follow up on our tutorial guiding you through the setup on how to submit and run a Node.js app on a CoreOS cluster. Within the previous post, we only showed you how to submit and run a single app instance on a given machine within …

During the last weeks, we’ve learned the fundamentals of three important components of the CoreOS ecosystem. Additionally, you’re able to manage key-value-pairs within etcd and services within our cluster using fleet featuring systemd. This gives us all the required knowledge to finally make the step from just running …

If you’ve read the previous articles within this CoreOS series, you’re already familiar with an essential component within the ecosystem: etcd. This post will introduce two other fundamental components of the CoreOS: fleet and systemd {{outline}} systemd systemd is an init system providing functionality to manage processes on …

This is the second part about etcd and completely geared towards etcd’s HTTP/JSON API and the command line utility etcdctl. Within the previous post on etcd, we described how etcd can bootstrap a new cluster with the help of an existing one. Further, we showed you two configuration …

There are multiple great utilities and tools within the CoreOS ecosystem. One of them is etcd, a distributed key value store. etcd is used to share and store data within a cluster of CoreOS machines and make the data generally available for every machine. Additionally, the shared configuration is used …

Last week we’ve learned about CoreOS’ components and technologies within the ecosystem. This week, we’re directly diving into the practical part and get our hands dirty. If you read the first post, you already know that CoreOS is an operating system geared towards high-availability. Setting up a cluster …

CoreOS is a new operating system with a completely changed mindset. The idea goes away from single servers and moves completely towards security and high-availability clusters. All the management is done at cluster level. CoreOS ships and integrates with components that simplify the overall cluster management. Within this series, we’ …