Scott's Weblog The weblog of an IT pro specializing in virtualization, networking, open source, and cloud computing

One of the "Top Virtualization Blogs" of 2008

2008 was a great year for this site. Late this year, I broke over 3,000 RSS subscribers, and the site averages 5,500 to 6,000 page visits every day. Except for November, the site racked up over a million hits every month in 2008, totaling almost 15 million hits for the entire year. Wow! Thanks so much to everyone who reads, subscribes, visits, or otherwise supports my site.

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OpenVPN and mt-daapd

I have a system at home with an “older” Linux distribution for mundane tasks like DHCP and content filtering on my broadband connection (no need for the kids to see something they shouldn’t be seeing, if you know what I mean). I’ve thought frequently about rebuilding it with a newer distribution, perhaps Ubuntu, but—to be perfectly honest—I’m just too lazy. It generally just works, and overall doesn’t require a great deal of care and feeding.

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Merry Christmas!

Let us never forget the true reason behind Christmas:

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Random Reboots with VMware ESX 3.5 Update 3

I’ve been communicating with a reader who is experiencing random reboots of virtual machines on his HA/DRS-enabled cluster running VMware ESX 3.5 Update 3. At first, I thought his problem was related to the bug with VM failure monitoring that I discussed here, but upon further discussion the random reboots are continuing to occur even when VM failure monitoring is disabled. The only relief the reader has been able to find thus far has been to completely disable VMware HA on his cluster, which—to be honest—is a less than acceptable solution.

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A Closer Look at iCal, CalDAV, Google Calendar, and the iPhone

A few weeks ago I posted an article titled Manually Configuring iCal for Google Calendar and CalDAV, in which I provided a way to configure iCal in Leopard to use CalDAV to communicate with Google Calendar. I’d done this once before, but when Google made the CalDAV support “official” they removed the how-to pages and instead pointed everyone to their application to do it automatically. In any case, a bit of experimentation turned up the right settings, so in the event you’re interested, have a look there.

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Free Veeam Monitor

In the event you haven’t heard elsewhere already, the special Christmas present that Veeam had in store for the virtualization community was a new, free version of Veeam Monitor. The addition of this free solution gives system administrators a new option for real-time monitoring of VMware Infrastructure environments.

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Get Used to vSphere

That’s right, VMware has finally settled on a new name for would have been called VMware Infrastructure 4. The new name? VMware vSphere.

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VMware ESX Networking Articles

Over the past few years—almost four years now that I’ve been writing here on this site—I’ve written quite a few articles on VMware ESX networking. Here’s a collection of links to some of the more notable, and hopefully more useful, articles in that group.

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Using vmware-vim-cmd to Modify a Portgroup

While creating a command-line configuration guide for a design that I’d prepared, I found myself in need of a command that sets the NIC failover order explicitly for a portgroup. I suspected—and was correct—that vmware-vim-cmd would do the job, but was having a hard time finding documentation on the correct syntax. Even the extensive XtraVirt vimsh white paper did not have information on the syntax. After a little bit of digging around, I found the information for which I was looking. Here it is for future benefit.

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Enabling Enhanced VMXNet

I’ve been doing some additional digging into jumbo frames and other networking configurations, and along the way I came across references to VMware’s Enhanced VMXNet network adapters. These were apparently introduced in VMware ESX 3.5 and are necessary in order for virtual machines to take advantage of features like TCP Segmentation Offload (TSO) or jumbo frames.

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