These are my links for 26 ago 2014 through 27 ago 2014:
MySQL active-passive cluster | Your IT goes Linux – We will use the iSCSI Lun defined in our iSCSI cluster as a shared storage and we will run MySQL in active-passive (fail-over) mode using Pacemaker and Corosync cluster engine. The cluster will have to connect to the iSCSI target, mount the iSCSI partition on one node and start a MySQL service which has all its data on this partition.
Perl – [...] Perl has horrors, but it also has some great redeeming features. In this respect it is like every other programming language ever created. This document is intended to be informative, not evangelical. It is aimed at people who, like me: dislike the official Perl documentation at http://perl.org/ for being intensely technical and giving far too much space to very unusual edge cases learn new programming languages most quickly by "axiom and example" wish Larry Wall would get to the point already know how to program in general terms don't care about Perl beyond what's necessary to get the job done. This document is intended to be as short as possible, but no shorter[...]
Linux Performance – This page links to various Linux performance material I've created, including the tools maps on the right, which show: Linux observability tools, Linux benchmarking tools, Linux tuning tools, and Linux observability sar. For more diagrams, see my slide decks below.
AIXchange: Useful Storage Links – Here's an assortment of really good storage-related articles — the majority of which are found on IBM developerWorks — that are worth your time. While some of them are a few years old, they still provide relevant information.
These are my links for 10 apr 2014 through 15 apr 2014:
ditaa – ditaa is a small command-line utility written in Java, that can convert diagrams drawn using ascii art ('drawings' that contain characters that resemble lines like | / – ), into proper bitmap graphics. This is best illustrated by the following example — which also illustrates the benefits of using ditaa in comparison to other methods
RegExr: Learn, Build, & Test RegEx – RegExr is an online tool to learn, build, & test Regular Expressions (RegEx / RegExp). * Results update in real-time as you type. * Roll over a match or expression for details. * Save & share expressions with others. * Explore the Library for help & examples. * Undo & Redo with Cmd-Z / Y. * Search for & rate Community patterns.
Opencall – Open Source Call Tracking Software – Call tracking is a method of monitoring inbound phone calls. It allows you to record conversations, track key statistics such as caller id, call duration, call source and streamline your sales, customer service and marketing. Opencall is the world’s first (and only) open source call tracking software. The software is available under the GPL v3 license, is written in PHP and utilises MySQL as the database platform. The original Opencall source code was written and developed by CallTracking Hong Kong to service clients in Hong Kong and other Asian countries. After 8 months of internal development the founder of CallTracking, Scott Bowler, decided to release their proprietary code to the public and change his business model to servicing companies who would make use of the open source call tracking platform. The major driver behind this choice was to open up the product to a global user base and encourage more rapid development of the platform.
calligrafia.org » il sito dell’Associazione Calligrafica Italiana – [...] Nel settembre 1991 a Milano, un gruppo di calligrafi fonda l'Associazione calligrafica Italiana. Da allora il programma dell'Associazione è cresciuto con successo anche grazie ai contatti mantenuti con altre associazioni calligrafiche all'estero (in Europa e in America) garantendo così scambi di informazioni e soprattutto la possibilità di avvalersi della collaborazione di insegnanti di riconosciuta competenza. In questi anni l'ACI ha sicuramente ottenuto successi e risultati. Oramai la calligrafia è praticata anche in Italia, sono state organizzate mostre e avviati contatti con biblioteche e scuole[...]
Rajiv’s blog – I was in charge of scaling Dropbox for a while, from roughly 4,000 to 40,000,000 users. For most of that time we had one to three people working on the backend. Here are some suggestions on scaling, particularly in a resource-constrained, fast-growing environment that can’t always afford to do things “the right way” (i.e., any real-world engineering project ;-). If people find this useful, I’ll try to come up with more tips and write a part 2.
Learn Ruby The Hard Way — Learn Ruby The Hard Way – Welcome to Learn Ruby the hard way. This is a translation of "Learn Python The Hard Way" to teach total beginners Ruby. It's in the same style, and the content is nearly the same, but it will teach you Ruby.
Learn Python The Hard Way | A Beginner Programming Book – [...] Have you always wanted to learn how to code but never thought you could? Are you looking to build a foundation for more complex coding? Do you want to challenge your brain in a new way? Then Learn Python the Hard Way is the book for you[...]