Wiki source code of Virtual machines

Last modified by Jan Rhebergen on 2022/01/24 15:57

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1.1	1	= Discussion =
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	3	Apart from the docker containers we see a need for virtual machines as well. In fact to be able to use TLJH we employ a Linux Container (LXC). This is because for technical reasons TLJH cannot be dockerised due to dependency on systemd.
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	5	For legacy application and alternate operating systems it is smart to be able to use virtual machines. It also makes deploying and roll-out very flexible. There are several techniques available to us that are good to use for different reasons.
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	7	As an example one would like to use ArcGIS for Windows. In that case you need to have a virtual machine windows guest available. ArcGIS would benefit from GPU passthrough so that option should be available ([[https:~~/~~/docs.oracle.com/en/virtualization/virtualbox/6.0/admin/pcipassthrough.html>>https://docs.oracle.com/en/virtualization/virtualbox/6.0/admin/pcipassthrough.html]]).
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	9	Choices to consider:
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	11	* VirtualBox (by Oracle)
	12	* KVM/Qemu/Quickemu
	13	* GnomeBoxes/VirtualManager
	14	* Xen
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	16	KVM/Qemu based is preferred because of speed and robustness. A test with Quickemu was performed and show that it can be extremely easy to setup a virtualmachine with a Windows guest. However the Quickemu approach creates a NAT-ed userspace instance which is isolated and very difficult to access. It is possible to fix this but still needs some investigation.