Donet Blog » Clustering http://blog.donet.com Just another WordPress weblog Fri, 19 Mar 2010 19:01:19 +0000 http://wordpress.org/?v=2.8.2 en hourly 1 http://blog.donet.com http://www.donet.com/favicon.ico Donet Blog WebHostingStuff Awards Donet Hosting “Excellent” Rating! http://blog.donet.com/2009/12/02/webhostingstuff-awards-donet-hosting-excellent-rating/ http://blog.donet.com/2009/12/02/webhostingstuff-awards-donet-hosting-excellent-rating/#comments Wed, 02 Dec 2009 23:12:59 +0000 David Mezera http://blog.donet.com/?p=1253 Webhostingstuff.com awarded Donet an EXCELLENT rating for achieving a 99.99% overall uptime for our web hosting services.

See the screencap below:

Screen shot 2009-12-02 at 6.02.56 PM

We are very proud of this achievement, but we’re not stopping there. With our virtual machine infrastructure our objective is to achieve 99.999% uptime, with less than 6 minutes per year of unplanned downtime.

]]> http://blog.donet.com/2009/12/02/webhostingstuff-awards-donet-hosting-excellent-rating/feed/ 0 Building a Castle ( VLANs and LVS ) http://blog.donet.com/2009/02/05/building-a-castle-clustering-multiple-linux-vlans-with-lvs/ http://blog.donet.com/2009/02/05/building-a-castle-clustering-multiple-linux-vlans-with-lvs/#comments Fri, 06 Feb 2009 03:01:27 +0000 James http://staff.donetblog.com/?p=36 Uptime is King when it comes to any network service; so I like to think of the Linux Virtual Server Project (LVS) as the castle protecting the King.  As with any castle, you want to keep it organized and clean, the Dark Ages were such a messy time.  So the castle is organized into rooms for specific tasks, just like a network might be organized into different VLANs . Each VLAN being dedicated to a specific network function, now add the complexity of keeping each room safe inside the castle, despite having doors, windows and the occasional secret passage, and you can begin to understand the possible complications of clustering services which run on VLANs inside of Linux.

However, if you are able to sort this ball of tangled chain mail and get things working, you can be handsomely rewarded with gold and riches (slightly embellishing).  What you will get however, is the ability to provide clustered services to ANY TCP/UDP service running across ANY VLAN in your network.  Not a bad deal if you are willing to put up with some headaches when you start out.

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