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Changing ESXi 5.1 Service Console VLAN ID via PowerCLI

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:

As mentioned, this wasn’t the hard part. It appears that vSphere 5.1 has a (pretty cool!) new feature that checks whether … Read more

UCS Explained in video

Brad Hedlund‘s blog is one of my favorite sources of excellent UCS (and other general) material. I just found the exceptional UCS videos, which deserved a re-share.


Part 1 – The Physical Architecture of UCS

In this video we take a look at the physical network architecture of Cisco UCS and incorporate the new capability of connecting both blade and rack mount servers to UCS Manager.


Part 2 – Infrastructure Virtualization & Logical Architecture

Here we look at how Cisco UCS virtualizes every significant component of the physical architecture; switches, cables, adapters, and servers. Then we look at how … Read more

New UCS Blade Server on older UCS Firmware

When expanding your UCS environment, Cisco will deliver your new blades with the latest firmware. If you’re running an older firmware on your UCS setup, this could cause an issue with the blade discovery.

If the new blades are hung on the discovery process with BIOS POST issues, the following message can appear in the FSM tab of the server:

Waiting for BIOS POST completion from CIMC on server 1/1 (FSM-STAGE:sam:dme:ComputeBladeDiscover:BiosPostCompletion)

This can happen when then blades firmware is newer than the firmware available in the bundle installed in the UCS Manager. The easiest way to recover and complete your … Read more

Fixing MySQL slaves with Percona xtrabackup

For a very long time, fixing MySQL slaves was a tedious task. Slaves died, replication fails, tables would get out of sync and you’d have to import all the (consistant) data from the master database. Depending on the importance of the slave, this could mean downtime for your master while exporting.

MySQLdump is usually the application one uses to execute this task, locking the tables while exporting. For me, having a database readonly, is downtime. However you look at it, if your website is not 100% useable, it is experiencing downtime.

I came across Percona’s xtrabackup utility a while back … Read more

vSphere Web Client 5.1: Must be registered with the Lookup Service

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 ([email protected]) you created during the vCenter server installation
  • Browse to “Administration -> SSO Users and Groups”
  • Browse
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IOS Recovery of 3750 switch

I had a corrupted IOS image on a 3750E switch today and feared for a xmodem transfer to eat up my day, until I found that you can copy from TFTP. It’s very well hidden, but still possible. Here’s how:

When the switch has ‘booted’ without a proper IOS, you’ll be in the ‘switch: ‘ command line. In the following example, I will assume that the TFTP server has IP 192.168.0.10 and the switch will use 192.168.0.1.

Connect your TFTP server to the ethernet management port, then follow this sequence:

switch: set IP_ADDR 192.168.0.1/255.255.255.0
switch: set DEFAULT_ROUTER 192.168.0.10
switch: copy
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vCloud Integration Manager

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

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