kvm or openvz?

[Bendik]

Can someone tell me what's difference between this two?

 

[1337]

Can someone tell me what's difference between this two?

To put it shortly, Openvz is essentially a fancy docker container, while providing isolation from the host system, it isn't virtualization in the full sense of the word. KVM is full kernel-level virtualization and when done properly, provides full isolation from the host system.

 

[TBNRShadowDev]

Can someone tell me what's difference between this two?

Also Docker CE isn't compatible with the latest openvz kernel and its virtual servers. So go for KVM if you can.

 

[Zelon-Jack]

Both come with their advantages, although I'm going to lean towards KVM in most cases.

OpenVZ:
Pros:

• A bit better performance, but it is unnoticeable in most cases.
• Less overhead
• Usually costs considerably less

Cons:

• Oversubscribing RAM and disk is common
• Can only run Linux, so BSD or Windows will not work.

KVM:
Pros:

• No oversubscribing aside from Network and CPU.
• More secure than OpenVZ.
• Kernel upgrades can be done without upgrading the node.

Cons:

• They typically cost more than OpenVZ virtual machines.

Hope this helps!