Elijah Paul

Wow! "@tomwarren: Who remembers this? http://t.co/ivAH8FQr" • 1 day ago

What He Said…

By: Elijah
06-05-2012
Amazon AWS, Blog, CentOS, Cloud, EC2, Linux, Tech

 
Sam Bashton at Bashton Blog has created some pretty nifty Amazon EC2 CentOS 6.2 AMI’s.

They’re light weight, ‘hack’ free, (i.e. “random repositories enabled, random extra packages installed, no instance based swap etc etc.”) and come in both 32bit and 64bit, EBS or Instance Store versions.

Login Username: ec2-user
Root Device Name: /dev/sda1

Region

EBS-Backed
(32-bit)

EBS-Backed
(64-bit)

Instance Store
(32-bit)

Instance Store
(64-bit)

eu-west-1

ami-bda09ec9

ami-afa09edb

ami-7fa09e0b

ami-1ba09e6f

us-east-1

ami-94cf1cfd

ami-eece1d87

ami-62cd1e0b

ami-3ecd1e57

us-west-2

ami-c80d80f8

ami-c00d80f0

ami-e20d80d2

ami-c473fef4

Source: http://blog.bashton.com/2012/centos-6-2-ec2-ami/
Source: http://thecloudmarket.com/owner/561795456677–bashton

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Private vs Public Cloud Computing Infographic

By: Elijah
20-04-2012
Blog, Cloud, infographic, Tech

 

A brief run down of the pros and cons when deciding between Private vs Public cloud computing.

Private vs Public Cloud Infographic

Source: Internap

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Installing Percona XtraDB Cluster (Beta) on CentOS 6.2 (EC2)

By: Elijah
14-03-2012
Amazon AWS, Blog, CentOS, Cloud, Database, EC2, Linux, MySQL

 
Percona recently released the beta version of their MySQL cluster offering. Percona XtraDB Cluster (Beta).

Features:

  • Synchronous replication
  • Multi-master replication support
  • Parallel replication
  • Automatic node provisioning

I’ve been using Percona XtraDB Server as a replacement for regular old plain MySQL deployments more and more recently. And I have to say that I’ve definitely seen a performance increase with a number of different scenarios.

Percona XtraDB Cluster is built on MySQL 5.5 and Galera 2.0 GA. It’s setup such that through “parallel replication”, each node in a cluster contains a full (current) copy of data. Queries can be written to any node in a cluster and the data is synchronized to all nodes, thus maintaining data consistency. Since write queries are either committed on all nodes or not committed at all, the consistency of your data is guaranteed.

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Resizing a RightScale CentOS 6.0 EC2 Root EBS Volume

By: Elijah
03-03-2012
Amazon AWS, Blog, CentOS, Cloud, EC2, Linux, Tech

 

RightScales images are some of my favourite AMI images to use for running many applications on EC2 instances. However resizing the EBS volume of a RightScale CentOS 6.0 EC2 AMI image is not as straight forward as with some other AMI Images. The resize2fs command does not work the first time round due to the default multi-partition configuration. Therefore we have to re-partition the root device once the image has been created before resizing it.

1. Select the image (according to region) you wish to resize. For this tutorial I’m using RightScale’s EU RightImage CentOS 6.0 64bit EBS image (ami-d4a494a0 / EU-West-1 region)

AWS US-EAST
AWS US-WEST
AWS EU
AWS AP-SINGAPORE
AWS AP-TOKYO
         
ami-dfc302b6
ami-dd2f7298
ami-d4a494a0
ami-721c6720
ami-5a96235b

AMI Image Ref: http://bit.ly/wVfq3r

2. Using AWS’s EC2 Command Line Tools we’ll resize the default root EBS volume from 8GB to 30GB. (Steve Evans at SerkTools has a great tutorial on how to setup EC2 API command line tools in Windows. You’ll also need to download the Amazon EC2 API Tools).

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About Me

Virtualization and Cloud Consultant


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Email: elijah.paul@gmail.com

Twitter: @elijahpaul

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Skype: elijahpaul.co.uk

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