This morning, (8/26/15) Edward Haletky of the Virtualzation Practice published the article CONTAINERS ARE THE FUTURE, IF … which needs more clarification. I was going to respond over twitter, but there was no way that was happening. So lets take some of these line by line. NOTE: this is my opinion from someone who has been in the container space for almost 2 years now.
"The reasons are myriad, but there seem to be some issues with people saying that virtualization is dead (I do not agree)"
I agree too. Virtualization is the new legacy. Virtualization will be around for 10 years and longer. But it's not the new hotness.
"or that containers on bare metal with CoreOS, Red Hat Atomic, or some other container-built OS is the future (which is possible). Neither of these will happen unless we consider why clouds are so popular. Would a cloud give up the automation and tools it has just to go back to bare metal with containers?"
Yes they will give it up. Times and processes change. That's like saying we are supposed to treat VMs just like they were physical machines. The hypervisor is a CPU, Memory, and Management resource that must be accounted for with any operation. We can get rid of that hypervisor in time.
"I have yet to hear of a Docker environment being used outside of virtual machines in a multi-tenant cloud. Why? Because Docker and Docker-like containers, have no concept of tenancy."
True, 99% of cloud environments that run containers are ran on top of virtual machines for this reason. But I think you are confusing a few things. You talked about containers within "organizations". This is a service provider issue. That "service provider" could be internal IT but most shops couldn't get IaaS with VMs, why would they think multi-tenant containers are the way to do things? This technology is only 2 years old. How long did it take VMware to have a multi-tenant solution? vCloud was killed off and vCAC isn't a very good answer either. Today, multi-tenant approaches are 100% customized and will be like that for a while. Making this point pretty moot IMO.Add a comment