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Microsoft announces Hyper-V Containers

azure.microsoft.com

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Re: Microsoft announces Hyper-V Containers

#91

Post by DiabloD3 »

mushiake wrote: post #78
tkmcc wrote: post #76

Earlier quoted context omitted.

There used to be Windows Services for UNIX (a.k.a. Subsystem for UNIX-based Applications): http://en.wikipedia.org/wiki/Windows_Services_for_UNIX https://technet.microsoft.com/en-us/library/cc771470.aspx

They ditched in Windows Server 2012. Now recommend cygwin. "The Subsystem for UNIX-based Applications (SUA) is deprecated. If you use the SUA POSIX subsystem with this release, use Hyper-V to virtualize the server. If you use the tools provided by SUA, switch to Cygwin's POSIX emulation, or use either mingw-w64 (available from Sourceforge.net) or MinGW (available from MinGW.org) for doing a native port. " https://tec…

msys2 is a lot better than mingw+msys and cygwin, in my opinion. I switched months ago and its been a lot easier to deal with.

Re: Microsoft announces Hyper-V Containers

#92

Post by guelo »

kolencherry wrote: post #14
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?

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…

> All management is performed remotely

Wow, I've been out of the Windows world for years, can you really fully manage a Windows box without the GUI?

Re: Microsoft announces Hyper-V Containers

#93

Post by ianmcgowan »

binarycrusader wrote: post #72
bydo wrote: post #65

Earlier quoted context omitted.

And where FreeBSD did jails in 2000 (or actually a bit earlier). https://www.freebsd.org/releases/4.0R/notes.html

Yes, everyone refers to jails, but I think most people would agree that jails weren't really containers. They didn't provide true isolation for a set of applications. I guess you could argue they were the original prototype for them though. Solaris containers are the first "lightweight virtualization" technology that I'm personally aware of that provided true isolation of one more processes from the host operating sy…

Not sure if "lightweight" counts when talking about a mainframe, but when first encountering Solaris zones they seemed equivalent to LPAR's in the mainframe world.

http://en.wikipedia.org/wiki/VM_%28operating_system%29

There are a lot of things from the mainframe world that are being newly "discovered" that seem quite mundane to the greybeards...

http://en.wikipedia.org/wiki/IBM_System_z#Comparison_to_othe...

Re: Microsoft announces Hyper-V Containers

#94

Post by walterbell »

jpgvm wrote: post #55
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 means their memory isolation is using hardware accelerated extensions. I would imagine it's still shared kernel and thus not "virtual machines". It makes sense for their container solution to make use of existing Hyper-V components like the virtual switch etc. But for that to be possible it's likely they needed to make use of VT-x and VT-d (if using stuff like hardware accelerated network device isolation like SRI…

How is the performance of Bromium?

Re: Microsoft announces Hyper-V Containers

#95

Post by trentnelson »

johngossman wrote: post #68
sgwealti wrote: post #51

What filesystem backend does docker use on Windows? Doesn't it require a copy on write filesystem to be efficient?

We're building a new one as part of the Windows Server Container implementation. Also doing copy-on-write registry and tightening up Job Objects: https://msdn.microsoft.com/en-us/library/windows/desktop/ms6... With any OS, containers are actually made up of several low-level components put together behind a management experience (which will include Docker).

Dang, COW registry is pretty neat.

Re: Microsoft announces Hyper-V Containers

#96

Post by willejs »

dikaiosune wrote: post #45
dordoka wrote: post #41

Earlier quoted context omitted.

Thanks a lot for your answer. We create a separate container for each application, as it seemed like the correct approach. In our company we do have several "levels" of library (even jvm) version requirements. Containers have been very helpful to easy the pain that was managing that on the server side.

I've found that building fat JARs with all dependencies bundled solves a lot of the same dependency management issues containers can be used for. And it does it without container overhead.

This is exactly what should be done.

Re: Microsoft announces Hyper-V Containers

#97

Post by binarycrusader »

ianmcgowan wrote: post #93
binarycrusader wrote: post #72

Earlier quoted context omitted.

Yes, everyone refers to jails, but I think most people would agree that jails weren't really containers. They didn't provide true isolation for a set of applications. I guess you could argue they were the original prototype for them though. Solaris containers are the first "lightweight virtualization" technology that I'm personally aware of that provided true isolation of one more processes from the host operating sy…

Not sure if "lightweight" counts when talking about a mainframe, but when first encountering Solaris zones they seemed equivalent to LPAR's in the mainframe world. http://en.wikipedia.org/wiki/VM_%28operating_system%29 There are a lot of things from the mainframe world that are being newly "discovered" that seem quite mundane to the greybeards... http://en.wikipedia.org/wiki/IBM_System_z#Comparison_to_othe...

Yes, there are LPARs, but we were discussing software-based virtualisation. LPARs are more partitioning than virtualization which is very different from a multi-tenancy perspective.

The equivalent to LPARs in the Solaris world would be LDOMs on SPARC.

Re: Microsoft announces Hyper-V Containers

#98

Post by skeletonjelly »

Scuds wrote: post #38

It'd be nice if Visual Studio tooling could let you hit F5 and your app could Compile, Deploy to an On-Desktop Container after running a dockerfile, Start Debugging from a 'remote' debugger.

Would certainly reduce the difference between dev and live testing environments!

Re: Microsoft announces Hyper-V Containers

#99

Post by robert_nsu »

antod wrote: post #86
simonjgreen wrote: post #33

Top it off with SSH access to PowerShell and we're all set? (Something something something dark side)

Yes please. And native rsync interoperability too? I've love to banish cygwin from my Windows servers. Although I'm finding the remote powershell execution from a Linux machine use case is now handled quite well by tools like Salt (via ZeroMQ to the minion) and Ansible (via WinRM). Native SSH would still be good though for tunnelling etc.

> And native rsync interoperability too? I've love to banish cygwin from my Windows servers.

Hear, Hear! You and me both. I've never liked Cygwin and do my best to avoid when possible.

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