Setting up Raid 1 on live Ubuntu system
Note: this originally from howto-forge and copied here for my own reference. http://www.howtoforge.com/software-raid1-grub-boot-debian-etch This guide explains how to set up software RAID1 on an...
View ArticleRemove svn directories using find command on linux
A quick tip on how to remove .svn directories if you accidentally copy them using a folder copy. find . -name '.svn' -exec rm -rf {} \; If you copy code from on svn codebase to another then you can...
View ArticleBlock and IP Address with iptables
I had a nasty hacker trying to get access to one of my Asterisk machines tonight so a quick reminder for myself on how to block a single IP address using iptables: Block an IP: iptables -I INPUT -s...
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Internet Explorer cannot download file
I had a report recently from a client that they couldn't download a file from one of our servers using Internet Explorer 7: The message they got was: Internet Explorer cannot download [filename] from...
View ArticleTomcat: Out of memory – permgen
I ran into a permgen out of memory issue with one of our applications running on Tomcat/Railo and did a bit of digging around. The main answer on the web is: Increase the size of you permgen by adding...
View ArticleDevOps/Linux Engineer in Sydney, Australia
Learnosity are looking for a DevOps/Linux Engineer to join our growing team. Note: this role has now been filled. Thanks to all who applied. Learnosity is an award winning company which develops...
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Cloudfront performance testing
We're in the process of rolling out Amazon Cloudfront on our systems as the next step in enhancing performance for our customers and users. While I was confident that it would make a difference I...
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Job: DevOps/Linux Engineer in Sydney, Australia
Learnosity are looking for a DevOps/Linux Engineer to join our growing team in Sydney Learnosity is multi award winning company which provides assessment technology to the largest education publishers...
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Regionalised API performance testing
We are a bit obsessed with performance at Learnosity and are constantly looking at both big and little changes that we can make in order to improve the performance of our systems for our clients. For...
View ArticleAWS RDS PHP connections hanging during failover
As part of our ongoing efforts to improve redundancy for our customers, Learnosity has been actively researching and preparing to migrate all of our EC2 databases into Amazon RDS. After putting RDS...
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