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Update docs about not supported rhel 7.5 and 7.6 #675

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Update docs about not supported rhel 7.5 and 7.6 #675

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819164e
Update docs about not supported rhel 7.5 and 7.6
gnufied Nov 14, 2018
32bccef
Update version information about qemu
gnufied Nov 14, 2018
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4 changes: 3 additions & 1 deletion docs/dev/libvirt-howto.md
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Expand Up @@ -19,12 +19,14 @@ crw-rw-rw-+ 1 root kvm 10, 232 Oct 31 09:22 /dev/kvm
If it is missing, try some of the ideas [here][kvm-install].

### Install and Enable Libvirt
On Fedora, CentOS/RHEL:
On Fedora or RHEL systems with QEMU(2.4+):
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I think floor versions like this belong in docs/dev/dependencies.md under a new subsection:

## Runtime Dependencies

...FIXME Terraform...

### Libvirt

Versions of QEMU less than 2.4 lack support for `-fw_cfg`, which is required for Ignition.
QEMU 2.4 and later may or may not work, we're currently getting testing in place to check at least some versions.

Or something very roughly like that. Thoughts?

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Sure we can document that there too. But I did wanted to mention that, if somehow your RHEL install does have qemu version 2.4+, the installer may work.


```sh
sudo yum install libvirt libvirt-devel
```

Installer currently does not work on stock RHEL-7.5 and 7.6 versions because they ship with very old version of QEMU.

Then start libvirtd:

```sh
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