Kernel-based Virtual Machine (KVM) vs. OpenVZ

KVM is the best solution in the case you need to test and turn up any virtual environment with limited vCPU/RAM resources. The obvious area of its use is a network environment when we want to avoid being tied to one type of hardware/vendor and being able to swap from one instance to another with no downtimes. The use of a vSwitch (that supports VLAN tagging) is a significant bonus for network engineers that some other hypervisors do not provide.

Incentivized

If you are considering to use Docker and Kubernetes then you can give a try to OpenVZ and Proxmox. It is a good alternative and it is as good as Docker and Kubernetes

Incentivized

• KVM is really good at providing fast and reliable virtualization for Linux guests
• Since KVM is a kernel module, every VM is a Linux process which can be managed by Linux system tools
• KVM integrates very well with the management framework libvirt, which is why KVM can be integrated in automation tools as well

Incentivized

• It is container-based virtualization
• It is not resource-heavy
• It is better then KVM

Incentivized

• KVM itself doesn't ship with a management interface
• KVM itself is a bit complicated to handle
• KVM needs Qemu to virtualize Windows guests

Incentivized

• Since it is a container-based solution, you can't run any other OS, except for Linux
• It is not so popular as Docker, but it's not that bad

Incentivized

It does the job and stays out of the way. The specifics of usability relies on the implementation, but with things like Icarus and libvirt, things are standardizing nicely.

Incentivized

It is a very reliable solution that can be used for x86 architecture virtualization with low overhead. It is a free and open source software. Easy to use withOpenStack.

Incentivized

Kubernetes and Docker are de-facto standards today, but I think that OpenVZ and Proxmox are better solutions

Incentivized

• Fast provisioning of new servers.
• Huge drop of the cost of servers compared to bare metal.
• Easy upgrades of resources, sometimes now even requiring a server restart.

Incentivized

• It's free, so you can try it and figure out if it suited for your needs

Incentivized