CoreOS

What do you like best?

The ease of running cintainers, which is different from traditional virtual machines in that they share the kernel of the host system without a need for a hypervisor, which allows great operational density

What do you dislike?

The recent migration from CoreOS Container Linux to fedora container linux was not that smooth. Plus as coreos does all the dirty work for us in terms of installing and maintaining docker, sometimes troubleshooting can get a bit difficult

What problems are you solving with the product? What benefits have you realized?

Coreos provides minimal memory usage and is also cost efficient. It is suited for services needing high availability. Systemd on the service level and fleet at the node level provide redundancy capability. They ensure that the service containers are always available and running. Overall maintainability is less