Posts tagged as:

Open-source

Review: SuperMicro’s SC847 (SC847A) 4U chassis with 36 drive bays

May 7, 2010
SuperMicro SC847 Thumbnail

[Or "my quest for the ultimate home-brew storage array."] At my day job, we use a variety of storage solutions based on the type of data we’re hosting. Over the last year, we have started to deploy SuperMicro-based hardware with OpenSolaris and ZFS for storage of some classes of data. The systems we have built [...]

Tagged as: Deduplication, Hardware, Nexenta, Open-source, OpenSolaris, Storage, SuperMicro, ZFS

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Web interface with Java console for XenServer (and Xen Cloud Platform)

December 4, 2009
Citrix Logo

One of the things that is nice with the release of Xen Cloud Platform (which I mentioned previously) is Project XVP. As the site mentions, it has four major components – xvp (a VNC proxy to allow you to connect to the console of a VM hosted on XenServer or Xen Cloud Platform), xvpviewer (TightVNC’s [...]

Tagged as: Citrix, Cloud, Open-source, Virtualization, Xen

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Are there any open-source worm filesystems?

November 8, 2009

I recently came across Nexenta’s WORM plugin for their commercial storage system, which is based on the OpenSolaris kernel and ZFS. For those of you that aren’t familiar with the term, WORM means ‘write-once read-many’ — in other words, after it’s written it cannot be modified, but can be read any number of times. I’d [...]

Tagged as: Nexenta, Open-source, Storage, ZFS

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Xen Cloud Platform

November 3, 2009
Citrix Logo

Wow, that was fast! As I mentioned yesterday, Citrix has open sourced the server-side components of XenServer. It came in the form of Xen Cloud Platform. As I expected, they open-sourced xapi, but not the client or the Windows components.
In any case, I will update once I play with it.. but this is great!

Update: Another [...]

Tagged as: Citrix, Cloud, Open-source, Virtualization, Xen

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Sun adds block-level deduplication to zfs

November 2, 2009
ZFS Logo

I’ve been eying ZFS for quite some time. I love the concepts of the filesystem, but am still not a huge fan of Solaris/OpenSolaris (I miss my apt-get, and am just used to the many Linux/GNU-isms.) I may actually have to give it a closer look (most likely via Nexenta, which is essentially Ubuntu with [...]

Tagged as: BackupPC, Deduplication, Nexenta, Open-source, OpenSolaris, Storage, Sun Microsystems, ZFS

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citrix to open-source xenserver

November 2, 2009
Citrix Logo

Well, I didn’t see this one coming. It appears that Citrix is about to open-source XenServer. There are few details so far, but I’d expect that what they are open-sourcing are the server-side components — IE, their management framework for Xen. I’d be surprised if they open-sourced their .Net XenServer client, but by open sourcing [...]

Tagged as: Citrix, Open-source, Virtualization, Xen

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Debian Lenny on Nehalem-based systems

April 16, 2009
Debian Logo

I recently had the opportunity to set up a few Nehalem based servers at SoftLayer to replace some older hardware that we were using.. and these servers /rock/. The servers have the E5520 CPU’s, and kick the snot out of the E5430’s that they replaced. We were able to actually able to replace 6 dual-5430’s [...]

Tagged as: Debian, Linux, Open-source

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Using Procmail with Plesk: rules via Ingo

January 7, 2009

In my previous post, I discussed how to get automatic procmail integration working with Plesk, to let you set up procmailrc rules to sort mail into folders. At the end of the post, I mentioned that it would be nice to figure out how to get Plesk’s version of Ingo set up to generate the [...]

Tagged as: Horde, Hosting, Ingo, Linux, Mail, Open-source, Plesk, Procmail

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Using Procmail with Plesk

January 6, 2009

For many years now, I’ve been maintaining a separate mail server, web server, and shell server. I’m getting busy these days, and just don’t have the time to dedicate to this maintenance. About a year and a half ago, I purchased a 30-domain Plesk license, which I am using for all the sites I host [...]

Tagged as: Hosting, Linux, Mail, Open-source, Plesk, Procmail

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xenenterprise 4.1

March 31, 2008

As many of you know, I’m a big fan of XenEnterprise as a virtulization platform, as it’s based on open source software, and just makes it a lot nicer to manage. For some reason, it just seems to make a lot more sense to me than VMware ESX when I’m trying to debug a problem [...]

Tagged as: Citrix, Open-source, Storage, Virtualization, Xen

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How to compile Nvidia kernel modules on 2.6.20+ with paravirt_ops enabled

May 2, 2007
Thumbnail image for How to compile Nvidia kernel modules on 2.6.20+ with paravirt_ops enabled

If you try to compile the nvidia kernel module on 2.6.20 or higher kernels that have paravirt_ops enabled (like the Debian kernels), you will run into a problem – it’ll complain that a non-GPL compatible license is using the GPL-only code paravirt_ops. I finally found a workaround (other than building the kernel without paravirt ops) [...]

Tagged as: Linux, Open-source

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finally, a “control panel” that i kind of like!

September 6, 2006

I’ve seen a wide gamut of those “control panel” things for hosting providers, and most of the ones I’ve looked at, I haven’t liked. They usually cost tons of money, use software I hate (ie, qmail), and do not integrate well with my preferred distribution (Debian). I ran across one today that seems to work [...]

Tagged as: Hosting, Open-source

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hp’s printer support under linux is getting better

May 3, 2006

Our printer (Epson Stylus Photo R200) died on us Monday night. I talked things over with Tiff, and we decided to go with an all-in-one printer, so she could do copying and such, too (she often could use that for work). One of my requirements was also to get a network-connected printer, so we don’t [...]

Tagged as: Linux, Open-source

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google analytics wordpress plugin

April 3, 2006

For those of you using WordPress and Google Analytics, you’ve got to check out this plugin:
http://www.oratransplant.nl/uga
It’ll track just about everything you can do on your blog with Google Analytics. Much larger feature set than any of ther others I’ve seen. Also much simpler than hacking the themes to add the code, which I had done [...]

Tagged as: Google, Open-source, Wordpress

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new debian i386 libc6 packages for xen

March 23, 2006

As those of you who use Xen on the i386 arch know, the libc6 stuff can be rather annoying. The Debian libc6 developers have finally released a test glibc that includes xen compatibility — no more moving /lib/tls out of the way and losing performance!
You can grab the packages from:
http://people.debian.org/~aurel32/xen/
Hopefully these will be mainline soon.

Tagged as: Linux, Open-source, Virtualization

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wordpress breakage?

February 25, 2006

Seems like pings aren’t working properly with WordPress 2.0… odd. I’ll have to keep playing with it. Appreciate any comments if other people are having this issue.
I’m trying svn now, to see if it fixes anything..

Tagged as: Open-source, Wordpress

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Types of VPN available on Linux

November 22, 2005

Virtual Private Networks, or VPNs, are a way of securely accessing resources on your network from untrusted points on the internet. This page describes some of the various types of open-source VPN solutions that are available on Linux systems, with benefits and drawbacks for each solution. I’m not making a VPN comparison, per se, but [...]

Tagged as: IPsec, Linux, Open-source, OpenVPN, PPTP, VPN

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using advanced routing to control traffic across your interfaces

November 21, 2005

[This page originally lived at http://www.natecarlson.com/linux/advanced-routing-in-out.php. I am working on migrating all content over to WordPress, which is why this post exists. This document is mostly up-to-date; please leave a comment with any changes!]
One of my tasks at work has been to set up Nagios to monitor all of our critical services. In the process [...]

Tagged as: Linux, Open-source, Routing

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advanced routing in linux to force traffic to interfaces

November 21, 2005

At work, I had an interesting problem where boxes would just seem to stop responding to ping packets for awhile on one interface, until you ping the other interface on the box. It turned out to be a problem with the way that Linux sends ARP requests when you’ve got routing set up across two [...]

Tagged as: Linux, Open-source

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fix for wpa_supplicant breaking on ipw2200 when upgrading to 1.0.8

October 28, 2005

I just upgraded the Linux kernel on my laptop to 2.6.13.3, and in the process had to upgrade the ipw2200 (Intel Wireless Drivers) to version 1.0.8. After the upgrade, no matter what I did, I couldn’t get wpa_supplicant to work – it kept returning an error saying:
ioctl[IPW_IOCTL_WPA_SUPPLICANT]: Operation not supported
I finally figured it out – [...]

Tagged as: Linux, Open-source

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per-user spamassassin preferences in ldap with mimedefang

September 21, 2005

[This page originally lived at http://www.natecarlson.com/linux/mimedefang-ldap-prefs.php. I am working on migrating all content over to WordPress, which is why this post exists. This document is mostly up-to-date; please leave a comment with any changes!]
This document describes how to set up my patches for Mimedefang which allow you to store per-user preferences for SpamAssassin in LDAP. [...]

Tagged as: LDAP, Linux, Open-source, Spam

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