Bookmarks for 27 lug 2012 through 30 lug 2012

These are my links for 27 lug 2012 through 30 lug 2012:

  • Rex V: an AJAX Regular EXpression eValuator – – This site is a Regular Expression evaluator for several different regular expression systems:
    PHP PCRE
    PHP Posix
    Perl
    Python
    Javascript
    Node.JS
  • 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.

Bookmarks for 23 lug 2012 from 15:38 to 17:02

These are my links for 23 lug 2012 from 15:38 to 17:02:

  • Graphvis visualisation of Nagios Config – Nagios Exchange – Graphvis visualisation of complex Nagios configs.
    I have written a couple of utilities one to walk a nagios config tree and turn it into a perl hash (called nagparse)and another to use that hash converting the tree into a graphvis directed graph (called graphit). These are then brought together with a CGI program called explorenagios that lets you select what parts of the config to graph. If you have a non trivial config then showing it ALL in one graph is not fun!

    You can use the two component programs on the command line too – and feed the output into dot (it has been optomised to make nice dot graphs) or one of the other engines like neato if you want to do some hacking of the output options.

    It is now useful enough to be worth sharing. Not prefect yet but useful. Surprisingly fast.

  • Findafont – Find a Font
    Information about how to find a font you're looking for
  • Switching from Red Hat Network to Unbreakable Linux Network (ULN) – This document describes how to connect to the Oracle Unbreakable Linux Network (ULN) to obtain software updates. It outlines the steps needed to switch a server installed with Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 5, Red Hat Enterprise Linux version 4 or Red Hat Enterprise Linux Server version 3, Update 8 or Update 9 from Red Hat Network(RHN) to Unbreakable Linux Network(ULN).

Bookmarks for 23 lug 2012 from 14:20 to 14:37

These are my links for 23 lug 2012 from 14:20 to 14:37:

  • Nagrestconf README – What is Nagrestconf?
    Nagrestconf is a REST interface and configuration GUI for Nagios.
    Nagrestconf is written in Bash and PHP.
    Specifically, Nagrestconf:
    allows Nagios configuration files to be written using a REST api.
    allows the server to be restarted using the REST api.
    provides a configuration Web GUI built on the REST api.
    It can be useful for:
    Bulk loading
    Bulk editing
    Automation
    Catching common configuration mistakes
    Configuration Delegation (using additional tools)
    Distributed monitoring (using additional tools)
    Not all of the Nagios directives are implemented, refer to the Status section.
  • Oracle Linux: A better alternative to CentOS – We firmly believe that Oracle Linux is the best Linux distribution on the market today. It's reliable, it's affordable, it's 100% compatible with your existing applications, and it gives you access to some of the most cutting-edge innovations in Linux like Ksplice and dtrace.

    But if you're here, you're a CentOS user. Which means that you don't pay for a distribution at all, for at least some of your systems. So even if we made the best paid distribution in the world (and we think we do), we can't actually get it to you… or can we?

    We're putting Oracle Linux in your hands by doing two things:

    We've made the Oracle Linux software available free of charge
    We've created a simple script to switch your CentOS systems to Oracle Linux
    We think you'll like what you find, and we'd love for you to give it a try.

  • configure time service on AIX host – Waldemar Mark Duszyk – First, you have to decide/select the appropriate devices to be your time providers. It could be one or more “official/public” time servers or maybe your routers. When you decide what these servers are you should validate that they deliver what you need and that you are (your host) is capable to receive and use what is delivered.