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vGhetto Lab #NotSupported Slides Posted

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As promised, here are slides to my #NotSupported session at VMworld Europe which I continued the theme of home labs with my vGhetto Lab #NotSupported presentation.

The idea behind the vGhetto Lab is to easily setup a vSphere home lab without too much effort and most importantly, leveraging as little resources as possible. This is all accomplished with the following:

  • Physical host running ESXi 5.x
  • ESXi 5.x offline depot image
  • VCSA 5.x (vCenter Server Appliance)

In addition to the above, you will also need to download the vGhetto Lab scripts which are shown in the video.
Here are some additional details on how to quickly get setup with your own vGhetto Lab.

Step 1 - After installing ESXi 5.x on your physical host, you will need to deploy the VCSA. Make sure you add a second network interface to VCSA as shown in the presentation. In my example, I created another vSwitch with no uplinks and portgroup for Auto Deploy network

Step 2 - Once the VCSA is powered on, go ahead and SCP the scripts to virtual machine. The first script that we will need to execute is the setupNetwork.sh and you will need to edit the following variables:

VCENTER_IP_ADDRESS_1=192.168.1.150
VCENTER_NETMASK_1=255.255.255.0
VCENTER_GATEWAY=192.168.1.1
VCENTER_IP_ADDRESS_2=172.30.0.1
VCENTER_NETMASK_2=255.255.255.0
VCENTER_HOSTNAME=vcenter.primp-industries.com
DOMAIN_LIST=primp-industries.com
DNS_LIST=192.168.1.1

Note: To ensure that you do not accidentally run the script without changing out the variables, there is another variable called ACTUALLY_READ_SCRIPT that needs to be changed from "no" to "yes" else the script will not execute.

Step 3 - Next we need to configure the vCenter Server, we will need to execute the configureVCSA51.sh which will configure the embedded SSO Database as well as the database of the vCenter Server. You do not need to edit any variables in this script

Step 4 - Finally, we need to configure our DHCP, TFTP, Auto Deploy services as well extracting the ESXi offline depot image and preparing it for use with Auto Deploy. You will need to edit the following variables before running the setupvGhettoLab.sh script.

DHCP_SUBNET=172.30.0.0
DHCP_NETMASK=255.255.255.0
DHCP_START_RANGE=172.30.0.100
DHCP_END_RANGE=172.30.0.200
DHCP_INTEFACE=eth1
TFTP_SERVER=172.30.0.1
VCSA_SERVER=192.168.1.150
ESXI_OFFLINE_DEPOT=/root/VMware-ESXi-5.1.0-799733-depot.zip
ESXI_REPO_PATH=/etc/vmware-vpx/docRoot
ESXI_REPO_DIR=ESXi-5.1.0

Note: For the Image Profile and Auto Deploy rule creation, if you wish for the script to execute them automatically versus echoing to the screen, remove the "echo" statement as well as the double quotes from the following so the last three lines look like this:

pxe-profile-cmd create $(cat /tmp/VIBS) ${ESXI_REPO_DIR}
rule-cmd create -i pxe:${ESXI_REPO_DIR} ${AUTO_DEPLOY_RULE} vendor=='VMware, Inc.'
rule-set-cmd set ${AUTO_DEPLOY_RULE}

Step 5 - You are now ready to create your nested ESXi virtual machines. You can use RVC as shown in the presentation (there is a slide at the very end which lists the commands) or you can connect to vSphere Web Client and create the ESXi virtual machines the traditional way via the GUI.

After updating the DHCP configurations with the new MAC Addresses from your nested ESXi virtual machines, you should then see Auto Deploy automatically provision your ESXi hosts and join them to the VCSA you deployed earlier.

Additional Links:

 

#NotSupported Sessions at VMworld 2012, A Dream Come True

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There is going to so much awesomeness at this year's VMworld, but one new event that I am most excited for this year is the #NotSupported Sessions which will be held at the VMware Community Lounge. The concept of this event was thought of by no other than Randy Keener, who works in TechOps at VMware. Randy's idea was to put together an event where people from all around could share tips/tricks, best practices, etc. on some of the neat and cool things  people have done with VMware technologies that may not be "officially supported". This can include installing ESXi on not supported white box configurations, to running nested ESXi for home lab environments. 

I am really glad Randy pushed for this event this year, as this is like a dream come for myself as I tend to walk on the "Not Supported" road quite frequently for those who know me well. I enjoy pushing the boundaries of VMware's products and it will be great to meet other people who also enjoy doing the same. I will also be presenting at #NotSupported which will take place on Wednesday 8/29, so be sure to come check out my session as well as Duncan Epping's session from 1-3pm or even coming by and just saying hello. 

For more details about #NotSupported sessions, including the vBrownBags which will also be taking place in the VMware Community Lounge, take a look at the schedule here.

In addition to the awesome session line-up, there will also be some NEW stuff that I have been working on with Randy and some of our engineers which will be unveiled by Randy during the #NotSupported event, so you won't want to miss out! #NotSupported will be the PLACE to be at VMworld 2012! Hope to see you there!

The Missing Piece In Creating Your Own Ghetto vSEL Cloud

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Awhile back I discovered an undocumented flag called "esxvm" in the SQL statements of the new vCloud Director 1.5 installer that suggested the possibility of deploying nested ESXi hosts in vCD. However, after further investigation the flag only enables the automated deployment of an ESXi 5 parameter (vhv.allow) which is required to run nested ESXi 4.x/5.x hosts as part of preparing a new ESXi 5 hosts in vCloud Director. There was still a missing piece to the puzzle to enable this functionality within vCloud Director user interface.

The answer eventually came from attending a recent session at VMworld 2011 in Las Vegas CIM1436 - Virtual SE Lab (vSEL) Building the VMware Hybrid Cloud by Ford Donald of VMware. I will not go into detail about what vSEL is, if you would like more information take a look at this blog post The Demo Cloud at VMworld Copenhagen or check out Ford's VMworld presentation online. In one of Ford's slides, he describes the necessary steps to enable nested ESXi called ESX_VM mode in vCloud Director which actually consists of two parts:

  • Enable nested virtualization and 64-bit vVM support in vSphere 5
  • Enable special mode in vCloud Director called ESX_VM to allow for vSphere 4 and 5 hosts as valid guestOS types

There are also some additional steps that are required after enabling ESX_VM mode:

  • Preparing or re-preparing ESXi 5 hosts
  • Allowing for Promiscuous Mode in vCD-NI or VLAN-backed Network Pool

********************* DISCLAIMER *********************
This is not a supported configuration by VMware and this can disappear at any time, use at your own risk 

********************* DISCLAIMER *********************

Note: I will assume the reader has a good understanding of how to install/configure vCloud Director and how it works. I will not be going into any details in configuring or installing vCD, you can find plenty of resources on the web including here, here, here and here. I will also assume you understand how to configure vCD-NI and VLAN-backed network pools in vCloud Director and how they work.

The first part is to enable nested virtualization (nested ESXi) support within the ESXi 5 hosts when they're being prepared by vCloud Director by updating the following SQL statement as noted in my earlier blog post Cool Undocumented Features in vCloud Director 1.5:

UPDATE config SET value='true' WHERE name='extension.esxvm.enabled';

The second part is to update the vCloud Director database to add support for both vSphere 4 and 5 hosts as valid guestOS types:

INSERT INTO guest_osfamily (family,family_id) VALUES ('VMware ESX/ESXi',6);

INSERT INTO guest_os_type (guestos_id,display_name, internal_name, family_id, is_supported, is_64bit, min_disk_gb, min_memory_mb, min_hw_version, supports_cpu_hotadd, supports_mem_hotadd, diskadapter_id, max_cpu_supported, is_personalization_enabled, is_personalization_auto, is_sysprep_supported, is_sysprep_os_packaged, cim_id, cim_version) VALUES (seq_config.NextVal,'ESXi 4.x', 'vmkernelGuest', 6, 1, 1, 8, 3072, 7,1, 1, 4, 8, 0, 0, 0, 0, 107, 40);

INSERT INTO guest_os_type (guestos_id,display_name, internal_name, family_id, is_supported, is_64bit, min_disk_gb, min_memory_mb, min_hw_version, supports_cpu_hotadd, supports_mem_hotadd, diskadapter_id, max_cpu_supported, is_personalization_enabled, is_personalization_auto, is_sysprep_supported, is_sysprep_os_packaged, cim_id, cim_version) VALUES (seq_config.NextVal, 'ESXi 5.x', 'vmkernel5Guest', 6, 1, 1, 8, 3072, 7,1, 1, 4, 8, 0, 0, 0, 0, 107, 50);

To apply these SQL statements to your vCloud Director 1.5 database, you will need to login to either to your Oracle or SQL Server database and manually execute these statements using the account that you originally created.

Here is an example of executing the SQL statements on an Oracle Express 11g database (Oracle Express is not officially supported by VMware):

As you can see, we need we first create a new guest_osfamily type called "VMware ESX/ESXi" and we need to also provide a unique family_id, which from a default installation of vCloud Director 1.5, the next available value will be 6. Next, we need to create the two new guestos_type "ESXi 4.x" and "ESXi 5.x" and again we need to provide a unique guestos_id which from a default installation of vCloud Director 1.5, the next available values will be 81 and 82. If any errors are thrown regarding a constraint being violated, then the ids may already have been used, you can always query to see what the next value is or select a new id.

Once you have executed the SQL statements, you will need to restart the vCloud Director Cell for the changes to take effect and if you already have prepared ESXi 5 hosts, you will need to re-prepare the hosts.

If you prefer not to manually do this, you can take a look at my blog post Automating vCloud Director 1.5 & Oracle DB Installation which has been updated to allow you to enable ESX_VM mode with your vCloud Director 1.5 installation. There is a new flag in the vcd.rsp file called ENABLE_NESTED_ESX which can be toggled to true/false which will automatically perform the SQL statements as part of the post-installation of vCloud Director 1.5 and restart the vCD Cell for you.

Here is a screenshot if you decide to enable this flag:

Finally, the last configuration tweak is to enable both promiscuous mode and forged transmit in either your vCD-NI or VLAN-backed Network Pool which is a requirement to run nested ESXi hosts. You locate the name of your network pool to identify distributed portgroup.

Next you can either use the vCD API or login to your vCenter Server and enable the promiscuous mode for that specific distributed portgroup.

UPDATE: Thanks to @DasNing - You can also enable promiscuous mode by executing the following SQL query: UPDATE network_pool SET promiscuous_mode='1' WHERE name=';

We are finally done with all the configurations!

If you successfully completed the above, when you go and create a new virtual machine in vCloud Director, you should now have a new Operation System Family called "VMware ESX/ESXi"

Within this new OS family, you can now provision a new ESXi 4.x or ESXi 5.x guestOS

Here is an example of my own vGhettoPod which includes vMA5 and vESXi 5 host which I can use to perform various types of testing in my home lab.

Now you can create your own ghetto vSEL cloud using VMware vSphere 5, vCloud Director 1.5 and vShield 5!