I am new to this.
Docker lets us use same set of configs so that we have uniform server setup everywhere right ? How is this different from Vagrant ? Or did I miss something ?
Docker lets us use same set of configs so that we have uniform server setup everywhere right ? How is this different from Vagrant ? Or did I miss something ?
Docker is a tool for packaging your code and all its dependencies into a portable lightweight container. You can deploy docker containers across VMs and physical machines, regardless of how they are configured. Some of your machines may be configured with Vagrant, some of them with Puppet, Chef, Salt or any number of home-made tools. But all of them can run your docker container exactly as you built it, byte for byte.
It appears to be a configuration management / deployment tool for KVM containers. New to me too, gonna dive in and check it out.
Docker uses LXC which is like BSD Jails, most of the advantages of VMs but you don't have to emulate a whole system, there's only one kernel atop which multiple containers/jails can run different software and have thorough isolation. Very fast and light-weight, but you can't run different OS kernels.