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

• Complex networking
• GPU processing is not fully supported
• It's hard to set up without support tools

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

Kernel-based Virtual Machine is an open-source and free solution, compared to Virtualbox which is a product from Oracle.

Incentivized

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

Incentivized

• KVM just works and gets out of the way
• KVM is working great with other open-source technologies like QEMU and libvirt

Incentivized

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

Incentivized