I have started learning Kubernetes for last few months now. While learning this, I had come across a beautiful concept of etcd. Doing further research on etcd I came to know that it has come from CoreOS. The latest I hear is etcd will now be part of CNCF (Cloud Native Compute Foundation). So some basic information I gathered about CoreOS is here. CoreOS is sometimes referred to as Container Linux CoreOS is a linux distribution It does not have a package manager, so nothing like yum or apt-get CoreOS took inspiration from Chrome browser, so they push all the required updates automatically. Only containers can run on CoreOS CoreOS at best works with multiple machines (like a cluster) Fleet is used to bring systems together to form a cluster Fleet is now discontinued in favor of Kubernetes etcd is a distributed key value data store. It can be used for storing configuration values, service discovery etc CoreOS is building many components that work w...