Kubernetes is described as 'open source orchestration system for Docker containers' and is a popular Virtualization App in the Network & Admin category. There are more than 25 alternatives to Kubernetes for a variety of platforms, including Linux, Windows, Mac, Online / Web-based and Self-Hosted solutions. The best alternative is Vagrant, which is both free and Open Source. Other great apps like Kubernetes are virt-manager (Free, Open Source), Heroku (Freemium), Portainer (Free, Open Source) and OpenShift (Freemium, Open Source).
The virt-manager application is a desktop user interface for managing virtual machines through libvirt. It primarily targets KVM VMs, but also manages Xen and LXC (linux containers).
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virt-manager vs Kubernetes opinions
pros, cons and recent comments
virt-manager can handle clusters of several physical VM hosts, each running many VMs. It offers advanced orchestration features such as migrating VMs between hosts with no downtime, storage provisioning, networking/firewall configuration and live snapshots.
A major difference between Kubernetes and virt-manager (as well as the libvirt ecosystem in general) is that Kubernetes manages containers, whereas libvirt manages full VMs running on a hypervisor such as KVM, Xen or ESX.
Heroku is a cloud application platform for Ruby, Rails, Node.js, Java, Python, Scala and Clojure web apps. Everything you need to build, run, and scale: Dynos: Run virtually any language at any scale. Database: Enterprise-grade Postgres as a service.
Rancher is an open source project that provides a complete platform for operating Docker in production. It provides infrastructure services such as multi-host networking, global and local load balancing, and volume snapshots.
Minor rant incoming: Something's not working? Maybe a service is down. docker-compose ps. Yep, it's that microservice that's still buggy. No issue, I'll just restart it: docker-compose restart. Okay now let's try again. Oh wait the issue is still there. Hmm.