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The Fedora Project’s infrastructure team needed a way to ensure the reliability of its Fedora Hosted service, while making the most of their available hardware resources. The team tapped GlusterFS replicated volumes to convert what had been a two-node, active/passive, eventually consistent hosting configuration into a well-synchronized setup in which both nodes could take on user load. Hosting Fedora Hosted The Fedora Infrastructure team develops, deploys, and maintains various services for the Fedora Project. One of these services, Fedora Hosted,…
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This morning I was trying to help figure out why a slick new Mediawiki skin was working just fine on an OpenShift-hosted Mediawiki instance, but was totally borked on a second Mediawiki instance, running on a VPS server. Both the VPS and OpenShift run on the same OS: Red Hat Enterprise Linux. Both were running the same version of Mediawiki, 1.19.2, both had the same version of PHP: 5.3.3. I compared the php.ini file from the VPS machine with the…
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I’ve been installing oVirt 3.1 on some shiny new lab equipment, and I came across a pair of interesting snags with engine-iso-uploader, a tool you can use to upload iso images to your oVirt installation. I installed the tool on a F17 client machine and festooned the command with the many arguments required to send an iso image off through the network to the iso domain of my oVirt rig. The command failed with the message, “ERROR:root:mount.nfs: Connection timed out.”…
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A little while back, I tested out the Unified File and Object feature in Gluster 3.3, which taps OpenStack’s Swift component to handle the object half of the file and object combo. It took me kind of a long time to get it all running, so I was pleased to find this blog post promising a Quick and Dirty guide to UFO setup, and made a mental note to return to UFO. When my colleague John Mark asked me about this…
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One of the cooler new features in oVirt 3.1 is the platform’s support for creating and managing Gluster volumes. oVirt’s web admin console now includes a graphical tool for configuring these volumes, and vdsm, the service for responsible for controlling oVirt’s virtualization nodes, has a new sibling, vdsm-gluster, for handling the back end work. Gluster and oVirt make a good team — the scale out, open source storage project provides a nice way of weaving the local storage on individual compute nodes…
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Yesterday I removed Fedora 17 from the server I use for oVirt testing, mainly, because I’ve been experiencing random reboots on the server, and I haven’t been able to figure out why. I’m pretty sure I wasn’t having these issues on Fedora 16, but I can’t go back to that release because the official packages for oVirt are built only for F17. There are, however, oVirt packages built for Enterprise Linux (aka RHEL and its children), and I know that some…
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Update: I’ve written an updated version of this guide for oVirt 3.2. Last February or so, I wrote a post about getting up and running with oVirt, the open source virtualization management project, on a single test machine. Various things have changed since then, such as a shiny new oVirt 3.1 release, so I’m going to update the process in this post. What you need: A test machine, ideally an x86_64 system with multiple cores, hardware virtualization extensions and plenty…
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There’s work underway over at the oVirt Project to produce some screencasts of the open source virtualization management platform in action. Since you can find oVirt in action each day in my home office, I set out to chip in and create an oVirt screencast, using tools available on my Fedora 17 desktop. Here’s the five minute screencast, which focuses on creating VMs on oVirt, with a bit of live migration thrown in: The first step was getting my oVirt…
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This weekend I upgraded our family PC to Fedora 17. I’ve been running this latest release for a while on my regular work machine and on my various (and generally short-lived) test systems, but I tend to be slower on the distro upgrade draw with the family computer. For me, slow usually means upgrade within two weeks of release, but this time around, it took me almost two months to undertake the upgrade. I did try upgrading from Fedora 16…
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We’re about one week away from the release of oVirt 3.1, and I’m getting geared up by sifting through the current Release Notes Draft, in search of what’s working, what still needs work, and why one might get excited about installing or updating to the new version. Web Admin In version 3.1, oVirt’s web admin console has picked up a few handy refinements, starting with new “guide me” buttons and dialogs sprinkled through the interface. For example, when you create a…
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