This article is number two of a series about the upcoming network virtualization spree, specifically the one coming from VMware. Check out the other articles.
Traditional network services have evolved over the last years. Introducing more advanced firewalling, loadbalancing and remote access services. Typically, datacenter networks architecture these days look somewhat look this:
The routers can be virtualized inside a physical box, using either VRFs or vendor proprietary router virtual routers, such as Cisco VDC. However, the external and internal firewalls are usually separate monolithic hardware firewalls, which puts a large dent into the network budget.
As we move … Read more
This article is number one of a series about the upcoming network virtualization spree, specifically the one coming from VMware.
I spent 14 to 17 October at VMworld 2013 in Barcelona, basically getting my mind blown by the futuristic possibilities of network flexibility. Things are changing for the network, flattening the entire stack, distributing network services throughout the virtual network (instead of the monolithic central hardware), lowering network costs and making it more flexible and simple to manage.
In this post, I will go over the basics of the components that are used to form the VMware NSX virtual network.… Read more
Today I had the need to remove the VLAN ID from 60 ESXi 5.1 hosts. Instead of doing it 60 times manually through the KVM, PowerCLI was enlisted for the job. That wasn’t the hard part, the one-liner is quite simple..For those interested:
Get-VMHost | Get-VirtualPortGroup -Name "Management Network" | Set-VirtualPortGroup -Name "Management Network" -VLanID 0
As mentioned, this wasn’t the hard part. It appears that vSphere 5.1 has a (pretty cool!) new feature that checks whether a network change has an impact on the connectivity of the ESXi host (like changing the service console VLAN ID or IP address) … Read more
When using the “Simple Install” to install a new vCenter setup, you might encounter the following error when trying to register the vCenter server to the Web interface:
The vSphere Web Client Administration Tool only supports registration of vCenter Server version 5.0. For newer versions, the vCenter Server system must be registered with the Lookup Service to allow the vSphere Web Client to discover the system.
To resolve this, follow these steps:
- Log in to the vSphere Web client as the admin account (admin@System-Domain) you created during the vCenter server installation
- Browse to “Administration -> SSO Users and Groups”
… Read more
VMware just announced a new addition to their vCloud product family; vCloud Integration Manager.
vCloud Integration Manager was developed to provide a simple and standardized way for service providers to provision vCloud Director, vShield and vSphere in order to more quickly get new customers up and running on a cloud service. Until now, service providers either had to do these tasks manually, or redirect valuable software development resources to writing undifferentiated “glue code” and/or automation scripts.
Integration Manager reduces operational costs by automatically stepping through the configuration process for vCloud Director to set up Virtual Data Centers, virtual networks, administrator … Read more
A lot of people are saying the VCAP4-DCA and VCP5 are hard to pass. After taking the VCAP4-DCA late October and the VCP5 late December, I was wondering why there are so many warnings; passing didn’t seem too hard. Maybe it’s the practical vs. theoretical clubs, but if you administer an enterprise or service provider VMware environment using several basic techniques like HA, DRS, network or fiber-channel storage, both are really doable.
Either way, to pass these exams, you definitely need to have handson experience. If a test environment is not an option, explore on the environment you do have … Read more
When installing various VMware products that link into vCenter (vShield, vCloud Connector, vChargeback, I could go on..), you often have minimal control over what URL is actually used to browse to the plugin and you usually can’t change it later on. This can screw up your SSL certificate plans.
After a little digging, I found these tables in the SQL database:
Both have a field called ‘URL’ which has the URL (doh) to the plugin.
Two things; this is not supported by VMware and could break something. I hasn’t on my setup, but it might on … Read more