Tag: etcd
3 Feb 2016 in etcd, CoreOS, Overview

etcd on CoreOS

In my last post, we learnt about CoreOS installation on AWS EC2 instances. Specifically, we saw how to create a CoreOS cluster with three nodes and connect to nodes from terminal window.

One of the main building blocks of CoreOS is etcd, a distributed key-value store. When applications run on a cluster, accessing application config data in a consistent manner is a problem, since using the underlying system’s file system is not feasible.

If you want to build a failsafe cluster, application config needs to be available across the cluster. etcd solves this problem. Think of it as a file system available across all the cluster nodes. See my previous post that discusses etcd in more detail.

In this post, we’re going to look at how to use etc in real-life scenarios.

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