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Microsoft announces Hyper-V Containers

azure.microsoft.com

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Re: Microsoft announces Hyper-V Containers

#31

Post by kirinan »

dordoka wrote: post #24
kirinan wrote: post #7

This will be what takes containers into the mainstream businesses. Companies may adopt docker or other instead of this, but Microsoft creating their own version of it means its a viable technology. Im more interested in the new frameworks and technologies that get adopted because of this than the fact that its in use. Traditional Java web projects that are hosted on Tomcat/JBoss don't run well inside containers but t…

Could you please explain what kind of issues did you find running tomcat/jboss inside containers? We've been running several apps on docker and so far no problem. Thanks a lot in advance.

Tomcat/Jboss are resource hogs and tend to not do well in sandboxed environments as it takes away a lot of the configurability/tuning that they provide/need for scaling. In addition, people tend to deploy multiple applications per application server to keep resources requirements down: containizeration tends not to lend itself to multi-application stategies (in particular resource heavy applications like those that run on the JVM). This is far from something that makes java an impossibility but it changes the techniques enterprises are accustomed to. Technologies like Jetty provide a good solution to the problem, and will probably see wider adoption as containers become more prevalent.

Re: Microsoft announces Hyper-V Containers

#34

Post by protomyth »

jsprogrammer wrote: post #23
kirinan wrote: post #7

This will be what takes containers into the mainstream businesses. Companies may adopt docker or other instead of this, but Microsoft creating their own version of it means its a viable technology. Im more interested in the new frameworks and technologies that get adopted because of this than the fact that its in use. Traditional Java web projects that are hosted on Tomcat/JBoss don't run well inside containers but t…

Microsoft creating their own version means the technology is viable? I think people have been using 'the technology' for years, without any input from Microsoft. It doesn't need to be anointed by Microsoft to be 'viable'.

> It doesn't need to be anointed by Microsoft to be 'viable'

Well, in a lot of corporations its viable when the big analyst companies say its viable (Gartner and Forrester Research) and they tend to be "nudged" by Microsoft. It once was does IBM have an offering in this space and then it became does Microsoft.

// one more soul crushing things done in corporate IT

Re: Microsoft announces Hyper-V Containers

#36

Post by simonjgreen »

O____________O wrote: post #13

Leveraging our deep virtualization experience, Microsoft will now offer containers with a new level of isolation previously reserved only for fully dedicated physical or virtual machines Uh. I don't understand how that sentence has any meaning. Particularly the "a new level of isolation previously reserved only for fully dedicated physical or virtual machines" bit. I mean, isn't that what a container is , a virtual m…

First half of this video will get you fully up to speed https://www.joyent.com/developers/videos/docker-and-the-futu...

Re: Microsoft announces Hyper-V Containers

#37

Post by Guvante »

bydo wrote: post #11

Pardon the skepticism, but do "Hyper-V Containers" with "enhanced isolation powered by Hyper-V virtualization" sound suspiciously like, err, Hyper-V virtual machines? And "Server Nano" has a description rather reminiscent of 2008's "Server Core". Is this just about management tools? Because that's cool, too, but why the spin?

It looks like they may be putting the container in a Hyper-V VM while allowing it callbacks to the underlying OS.

Done correctly this allows the hardware level protections to apply to the code running in the container, assuming the penalty of your OS calls routing through the VM-bridge doesn't kill your performance.

Re: Microsoft announces Hyper-V Containers

#39

Post by lawl »

throwaway1979 wrote: post #27
lawl wrote: post #21

Earlier quoted context omitted.

Thanks for the clarification. I at first assumed they'd bring OS level virtualization, apparently I'm not the only one. But it's basically just minimal images of windows in regular VMs then... A step in the right direction but still disappointing imo. Linux and BSD are still miles ahead.

So this is like boot2docker ... on Windows? You have a VM and you have containers inside it. This is not the same as containers on baremetal. But that is fine .. my confusion is the OS inside the VM. Is that Linux or Windows? Normally, I can run Ubuntu and Centos-based containers on my box. Can I run these as Hyper V containers? What about dot net? Can that be containerized.

No. When you talk about containers, you talk about operating system level virtualization[0]. This means you have one kernel, with multiple user spaces. You can run a CentOS container on Ubuntu because both use a Linux Kernel. What will actually happen is that CentOS will use your already booted Ubuntu Kernel.

So unless Windows switches to a Linux Kernel or vice versa you will never be able to run one as a container on the other.

You can however do that with Virtual Machines. But installing a stripped down version of windows in a virtual machine does not make it a container, it makes it marketing bullshit.

"Containers on baremetal" and containerizing dot net are thus a bit silly concepts since .NET has nothing to do with the operating system and you can't run a container on "bare metal" whatever you might mean by that.

[0] http://en.wikipedia.org/wiki/Operating-system-level_virtuali...

Re: Microsoft announces Hyper-V Containers

#40

Post by olavgg »

ochoseis wrote: post #26
kolencherry wrote: post #14

Earlier quoted context omitted.

From the TechNet Announcement: "we removed the GUI stack, 32 bit support (WOW64), MSI and a number of default Server Core components. There is no local logon or Remote Desktop support. All management is performed remotely via WMI and PowerShell. We are also adding Windows Server Roles and Features using Features on Demand and DISM. We are improving remote manageability via PowerShell with Desired State Configuration…

Since this is all remote powershell, it would be nice if MS/Windows introduced a native SSH server. That would probably help drive some conversion for people used to the posix world.

This!!!! One of the biggest things I really miss in Windows-land is SSH. Just today I had to create a SSH tunnel for SQL Server. While it's not a big issue with third party tools, it should just be built and ready for use as with every Linux distro, FreeBSD, Solaris and OSX.
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