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jcataluna
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Joined: 15 Apr 2003
Posts: 6
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 Posted: Wed Oct 29, 2003 2:03 pm Post subject: gentoo-sources + user mode linux |
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Hello all,
im very happy with gentoo-sources. for my gentoo box that acts as a Firewall , LVM, linux desktop, and numerous services for my home lan.
The problem its that i want to play with UML, basically for having virtual machines for development uses. I dont want to drop gentoo-sources in favor of usermode-sources. What i want its to apply UML patches to gentoo-sources.
its there a gentoo-way to do this? I think patching gentoo-sources with oficial uml patches its dangerous for gentoo healthy.
Thanks all for reading. |
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r_yuan
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Joined: 07 Jun 2003
Posts: 66
Location: Montreal, Canada
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| Posted: Wed Oct 29, 2003 4:28 pm Post subject: Re: gentoo-sources + user mode linux |
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Since you didn't mention skas, I'll assume it's not a problem. Remember that in using UML, you essentially have two kernels: the host kernel and the UML kernel. You use gentoo-sources for the host and usermode-sources for your virtual machines.
Does that help?
(BTW: skas is a patch you apply to the host kernel for improved UML performance, unfortunately, it doesn't patch against gentoo-sources.)
Edit: Re-phrased last sentence of 1st paragraph.
Last edited by r_yuan on Wed Oct 29, 2003 6:37 pm; edited 3 times in total |
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jcataluna
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Joined: 15 Apr 2003
Posts: 6
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| Posted: Wed Oct 29, 2003 5:26 pm Post subject: |
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r_yuan, first thanks for your fast reply 
The purpose of this project is to have 3 virtual machines, each one for: production, Quality Assurance, and development environments. I want to try some things of my "real work" at a national bank.
i think i dont understand very well UML;) Reading your post it seems that usermode-sources arent for "host kernel".
please tell me if im wrong on my next steps.
1) emerge usermode-sources.
2) build a kernel, inside /usr/src/uml/linux (basically iptables + grsecurity)
3) follow the doc to make things go.
dont have to recompile "host kernel" to add somethig about UML? |
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r_yuan
n00b
Joined: 07 Jun 2003
Posts: 66
Location: Montreal, Canada
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| Posted: Wed Oct 29, 2003 7:01 pm Post subject: |
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| jcataluna wrote: | | Reading your post it seems that usermode-sources arent for "host kernel". |
That's right.
| jcataluna wrote: | | please tell me if im wrong on my next steps. |
1) I prefer to patch my own kernel from the vanilla-sources. The reason being that the uml-patch used in the usermode-sources may be a bit outdated.
2) Your host will act as a gateway, so put your firewall on the host to protect your virtual machines. (Unless you have more specific needs.) You can forget grsecurity; it is not available in the vanilla-sources.
3) Pretty much.
You may need to recompile your kernel if you're missing options in your kernel. If your are networking your VMs, you should have the TUN/TAP option in your kernel (compiled or as a module). |
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Installing Gentoo
