Virtualization

Performing a CentOS Anaconda-based Install on a Linode for Kickstart, Root LVM and SELinux Features

Linode rocks. Seriously, read my review. I was talking to a co-worker (whom I converted to Linode as well) about how I would pay double the amount to keep my Linode now that I know how much I use it. Don't tell them that, they're cheap :) If you find this article helpful (or my article about moving VM's to and from Linode), please consider clicking one of the links in this article to sign up for a Linode - if you sign up for 90 days, I'll get $20 credited to my account.

I was setting up a second Linode that was to be a testing ground for some StackScripts I'm working on. The new Linode will eventually replace my existing one. For whatever reason, the most recent version of CentOS they had available was 5.3. Not a big deal, I can 'yum upgrade' up to 5.4 after installation. Well, after doing so, I found that a lot of features that I wanted had been stripped out. In Linode's defense, it's in their best interest to offer very stripped down images for their customers. The one feature I wanted that I couldn't get enabled was SELinux, and simply installing the packages still wouldn't let me use 'setenforce 1' to get it turned on. My best guess as to why is that the Linode kernel didn't support it, but I honestly didn't troubleshoot it too much. I really wanted root LVM capabilities as well, so I decided that a full-on anaconda based installation was the way to go. Plus, I couldn't find anything in the forums about it, so there was the lure of being the first to do it ;-)

Well, thanks to the flexibility offered by Linode, not only can you do a anaconda-based installation (with optional Kickstart), but you can do so using the GUI over VNC if you're so inclined!

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Bringing your linode home with you

Linode is, in my opinion, the best webhost out there. I recently switched this site from Wordpress to Drupal. In preparation for this switch, I wanted to be able to start with a clean slate - wipe the O/S and all, and install Drupal on top of that. Since I'm a sysadmin, I hate downtime! Read on to learn how I made my Linode portable.

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VirtualBox 2.0 Quick Impressions

I'm not new to the virtualization scene, but I'm no expert either -- I've been using VMWare Workstation since 1.0, VMWare Server since 1.0, and Xen since around 2.0. Well, I needed a Windows XP install on my laptop, and decided it would be a good time to see how VirtualBox compared. VirtualBox 2.0 was just released (changelog), so I went with the bleeding edge. Read on for my quick review of Virtualbox 2.0.

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Linode Review

I recently switched from Aplus.net shared Unix hosting to Linode Xen-based VPS hosting. Follow the jump to read my reviews of both.

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Per-subnet routing with Solaris 10 non-global zones

I had the chance to finally tinker with Solaris 10 zones the other day. They are impressive - very easy to setup! One of my biggest gripes about Solaris is that they've fallen way behind in the area of advanced IP routing. If you want to do things like policy routing in Solaris, you have to install ipfilter, which is no easy task. There is no alternative to iproute2 in Linux. Read after the jump to find a quick hack to setup proper routing for non-global zones on multiple subnets.

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