[CentOS-virt] Install nested ESXi 6.x host under CentOS 7 kvm host

Patrick Laimbock patrick at laimbock.com
Fri Nov 27 13:32:41 UTC 2015

On 11/26/15 09:47, C. L. Martinez wrote:
> Hi all,
>   I am trying to install nested Esxi 6.x under a Centos7 kvm host to
> use it as test lab for new ESXi versions, but I am doing something
> wrong because I can't install it.
>   I have configured kvm and kvm_intel modules with the following options:
> options kvm ignore_msrs=1
> options kvm_intel nested=1 ept=1
>   and I add the following options in <cpu> xml guest file:
>    <cpu mode='custom' match='exact'>
>      <model fallback='allow'>Westmere</model>
>      <feature policy='require' name='vmx'/>
>    </cpu>
> qemu-kvm package is installed from Virtualization SIG:
> qemu-kvm-common-ev-2.1.2-23.el7_1.8.1.x86_64
> qemu-kvm-ev-2.1.2-23.el7_1.8.1.x86_64
>   Am I doing something wrong or is it not possible to accomplish this scenario??

Here are my old notes how to run ESXi6 on KVM on Fedora 21:

# cat /etc/modprobe.d/nested.conf
options kvm ignore_msrs=1
options kvm-intel nested=y ept=y

Install ESXI6 Hypervisor with the vmxnet3 nic:

# virt-install --connect=qemu:///system -n esxi6 --cpu=host --vcpus=2 
--ram 4096 --os-type=linux 
--hvm --network=default,model=vmxnet3 --virt-type=kvm --arch=x86_64 
--graphics spice --accelerate --video qxl --channel spicevmc

or with the e1000 nic:

# virt-install --connect=qemu:///system -n esxi6 --cpu=host --vcpus=2 
--ram 4096 --os-type=linux 
--hvm --network=default,model=e1000 --virt-type=kvm --arch=x86_64 
--graphics spice --accelerate --video qxl --channel spicevmc

Boot the ESXi VM and in the console interface go to Troubleshooting 
Options and enable SSH and Console access.

SSH to the ESXi VM:

$ ssh -o IdentitiesOnly=yes root@<IP of ESXi6 VM>

# cd /etc/vmware
# vi ./config and add the following options:

vmx.allowNested = TRUE
hv.assumeEnabled = TRUE

Add the IP address of the ESXi Hypervisor to /etc/hosts esxi.lab.local

Now reboot the ESXi VM to make those options active.

I was able to install vCenter 6 (VCSA) on ESXi6 with these steps:

Create the template json file which is explained in

Some tips:

$ cat /home/patrick/VMware/patrick_embedded.json
         "Test template for VCSA deployment on a nested ESXi Hypervisor 
running on KVM on F21"





Next mount the VMware-VCSA-all-6.0.0-2562643.iso file
# cd /run/media/patrick/VMware\ VCSA/vcsa-cli-installer/lin64

And run the command to deploy the VCSA appliance on top of ESXi:
$ vcsa-deploy -v /home/patrick/VMware/patrick_embedded.json

[patrick at lab lin64]$ ./vcsa-deploy -v 

Start vCSA command line installer to deploy vCSA "vcsa", an embedded node.

Please see /tmp/vcsa-cli-installer-8159mI.log for logging information.

The SSO password meets the installation requirements.
Opening vCSA image: /run/media/patrick/VMware VCSA/vcsa/vmware-vcsa
SSL fingerprint 
fb:9a:f8:d2:86:14:c0:17:6d:02:f4:9d:da:e8:31:ee:fb:3b:58:d4 is different 
from host fingerprint 
51:A6:F1:28:E7:2D:9B:02:7A:97:0A:1A:87:A3:42:A8:4C:42:24:03 for host 
esxi.lab.local as target type.
Accept update of SSL fingerprint in known host file
Write 'yes' or 'no'
Opening VI target: vi://root@esxi.lab.local:443/
Deploying to VI: vi://root@esxi.lab.local:443/

Progress: 99%
Transfer Completed
Powering on VM: vcsa

Progress: 48%
Power On Completed

Installing services...
Progress: 5%. Setting up storage
Progress: 50%. Installing RPMs
Progress: 55%. Installed VMware-unixODBC-2.3.1.vmw.2-6.0.0.x86_64.rpm

Or not because the Firefox VCSA plugin did not work on a Linux (Fedora) 
host which you need to actually use vCenter. If you make the VCSA gui 
work with Firefox on Linux, I would appreciate an update.


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