geekism and nerdism

Bookmarks for 28 ago 2012 through 3 set 2012

These are my links for 28 ago 2012 through 3 set 2012:

  • Join di una macchina RHEL a un dominio Active Directory Windows e uso dei dischi condivisi dal dominio – Mia mamma usa Linux! – Questo documento descrive, in salsa cookbook, come realizzare il join di una macchina Red Hat Linux Server versione 6 ad un dominio Active Directory realizzato con Windows server 2003 o 2008.

    Segue una seconda parte che descrive come poter montare i dischi esposti da Windows ed usarli in scrittura e lettura.

  • Modern Perl – download ePub, HTML, Mobipocket – Perl.it – Modern Perl, scritto da chromatic è un libro sul linguaggio Perl adatto ai programmatori di tutti i livelli.

    Per chi si avvicina al linguaggio, il libro costituisce una introduzione a Perl aggiornata e moderna, che permette di prendere confidenza con il linguaggio utilizzandone gli strumenti e le metodologie sviluppate negli ultimi anni.

    Per il programmatore più esperto, Modern Perl costituisce un ideale aggiornamento su tutto quanto è stato introdotto con perl 5.12 e 5.14.

    Consulta oppure scarica il libro

  • TCP Port Scanner in Bash – good coders code, great reuse – I just had this quick idea to write a tcp port scanner in bash. Bash supports the special /dev/tcp/host/port file that you can read/write. Writing to this special file makes bash open a tcp connection to host:port. If writing to the port succeeds, the port is open, else the port is closed.

    [ Geeeeeeeeeeeeeeeeeeeeeeek 😀 ]

Bookmarks for 13 ago 2012 from 13:00 to 15:00

These are my links for 13 ago 2012 from 13:00 to 15:00:

  • Relaxing rain audio for work, play and sleep –
  • Fake S3 – Save time, money, and develop offline « – Amazon S3 is a extremely powerful service at the core of Amazon Web Services. However, outside of a production environment, S3 can be challenging to work with. It involves passing keys around, provisioning user accounts, and a reliable network connection — not to mention it costs money.

    At Spool, we built Fake S3 to make working with S3 in development and testing environments much easier. Our goal was to make a self contained executable that can mimic the majority of S3 Rest API with few external dependencies.

  • fake-s3/jubos – FakeS3 is a lightweight server that responds to the same calls Amazon S3 responds to.
    It is extremely useful for testing of S3 in a sandbox environment without actually making calls to Amazon, which not only require network, but also cost you precious dollars.

    The goal of Fake S3 is to minimize runtime dependencies and be more of a development tool to test S3 calls in your code rather than a production server looking to duplicate S3 functionality. Trying RiakCS, ParkPlace/Boardwalk, or Ceph might be a place to start if that is your goal.

    FakeS3 doesn't support all of the S3 command set, but the basic ones like put, get, list, copy, and make bucket are supported. More coming soon.

Bookmarks for 13 ago 2012 from 12:52 to 12:55

These are my links for 13 ago 2012 from 12:52 to 12:55:

  • Baculaconf – Babel Services – What is Baculaconf?
    Baculaconf is a Web interface written in php and that use Web 2.0 technic. This interface is made to set up Bacula, the free backup software.This interface allow to configure one or many Bacula backup platform.
  • Perdition: Mail Retrieval Proxy – Perdition is a POP3, IMAP4 and managesieve proxy server. It is able to handle both plain-text and SSL/TLS encrypted connections, and redirect users to a real-server based on a database lookup. Perdition supports modular based database access. ODBC, MySQL, PostgreSQL, GDBM, POSIX Regular Expression and NIS modules ship with the distribution. The API for modules is open allowing arbitrary modules to be written to allow access to any data store.
    Perdition has many uses. Including, creating large mail systems where an end-user's mailbox may be stored on one of several hosts, integrating different mail systems together, migrating between different email infrastructures, and bridging plain-text and SSL/TLS services. It can also be used as part of a firewall. The use of perditon to scale mail services beyond a single box is discussed in high capacity email.
  • DeleGate Home Page (www.delegate.org) – DeleGate is a multi-purpose application level gateway, or a proxy server which runs on multiple platforms (Unix, Windows, MacOS X and OS/2). DeleGate mediates communication of various protocols (HTTP, FTP, NNTP, SMTP, POP, IMAP, LDAP, Telnet, SOCKS, DNS, etc.), applying cache and conversion for mediated data, controlling access from clients and routing toward servers. It translates protocols between clients and servers, applying SSL(TLS) to arbitrary protocols, converting between IPv4 and IPv6, merging several servers into a single server view with aliasing and filtering. Born as a tiny proxy for Gopher in March 1994, it has steadily grown into a general purpose proxy server. Besides being a proxy, DeleGate can be used as a simple origin server for some protocols (HTTP, FTP and NNTP).

Bookmarks for 6 ago 2012 through 8 ago 2012

These are my links for 6 ago 2012 through 8 ago 2012:

  • open.NASA – a collaborative approach to open, direct, and transparent communication about your space agency – open.nasa.gov is a collaborative platform for the open government community to share success stories and projects they are working on. The content on this site is written by NASA employees and contractors across the agency. We are excited to highlight the ways that transparency, participation, and collaboration are being embraced by NASA policy, technology, and culture – and the amazing future that becomes possible because of that commitment.
  • VirtuaLinux – Official WebSite – VirtuaLinux is a Linux meta-distribution that allows the creation, deployment and administration of virtualized clusters with no single point of failure. VirtuaLinux architecture supports disk-less configurations and provides an efficient, iSCSI based abstraction of the SAN. Clusters running VirtuaLinux exhibit no master node to boost resilience and flexibity.
  • tindie | For Sale – buy & sell homemade gadgets, kits, & parts. Raspberry Pi, Arduino, 3dprinting, and more! As seen on: hackaday, reddit, wired, treehugger, and hackaday (again)

Bookmarks for 2 ago 2012 through 3 ago 2012

These are my links for 2 ago 2012 through 3 ago 2012:

  • andihofmeister/squidGuard · GitHub – squidGuard cleanup/rewrite

    The version here is a rewrite of most of the code. While it provides (almost) all features found in SG 1.5, the configuration is not entirely compatible.
    This repostiroy does NOT contain an official version of squidGuard (see below)

  • eAccelerator – eAccelerator is a free open-source PHP accelerator & optimizer. It increases the performance of PHP scripts by caching them in their compiled state, so that the overhead of compiling is almost completely eliminated. It also optimizes scripts to speed up their execution. eAccelerator typically reduces server load and increases the speed of your PHP code by 1-10 times.
  • Server World – Build Network Server – This site explains how to build home server connected to internet with static IP address. You need to get at least one static IP address from your ISP. Please make sure the terms of use from your ISP, and Get one or some IP addresses if possibles. It's possible to build a network server, not with static IP address but with dynamic IP address by using Dynamic DNS, though. But I don't recommend it because there are some limits. It's the best to get at least one static IP address in order to build a network server, there is no limit. To get one static IP address is not so high costs. It's easy to build network server at your home.
    This site explains how to configure a server with commands basically, not with Graphical User Interfaces.
    […]

Bookmarks for 31 lug 2012 through 2 ago 2012

These are my links for 31 lug 2012 through 2 ago 2012:

  • Magento optimization Howto – Welcome to this Magento hardcore performance howto, I hope it will be useful.
  • Nginx+PHP(FPM)+MySQL+Memcache+eAccelerator on Debian6 | Qi Yang – I recently rebuild my linux image on Linode, so I have to reinstall the LEMP stack again from ground. Last time was probably more than a year ago, with the help of many tutorials from google. So this time I decide to write what I did step by step for my reference in the future […]
  • Magento caching, APC, eAccelerator Memcached, files, sqlite, Vanish, what’s the … happen? | Alex Paradise – Magento is slow! It’s how start most of the article about Magento cache optimization. Yes, Magento is slow and this because of the way the code is written, extreme object oriented. Stackoverflow say “It is written in an Enterprise Java idiom” and there are right. Anyway, we can’t change anything about it and in one side that let us lot of flexibility.
    So, Magento IS SLOW! And what’s can we do? There is many thing to do, many, many. But the most important one is to work around the cache. I am searching for a cache solution and found so much different stuff like APC, eAccelerator, memcached, tmpfs, varnich, lighthttpd, nginx and so on… I will try to explain the different possibilities if found while my research and finished by the one I will implement[…]
  • Do you have any tips for making WorldClient run faster? – Question:

    Do you have any tips for making WorldClient run faster?

  • MySQL-Galera cluster with HAproxy – Sébastien han – When I started working on Open Stack, I had to investigate about the HA of the nova component. Unfortunatly the nova configuration needed a single entry point to connect to the MySQL database. The solution that came to me was to use HAProxy on top of my existing Galera cluster…

Bookmarks for 31 lug 2012 from 11:08 to 14:23

These are my links for 31 lug 2012 from 11:08 to 14:23:

  • VMweird | Tales from the Virtualization Crypt! – Tired of day-by-day activities, silly requests by customers, boring meetings?

    This website is right for you! It’s a meeting place for guys working in the Virtualization fields, to meet other like you and share the fun by telling your stories and have a laugh reading from others.

    [ via http://www.vuemuer.it/?p=3641 ]

  • Introduzione a GlusterFS: uno storage scalabile e distribuito – Mia mamma usa Linux! – GlusterFS è un file system open source distribuito e scalabile orizzontalmente, la cui capacità può essere dinamicamente espansa mediante l’aggiunta di nuovi nodi. GlusterFS è in grado di arrivare a gestire fino a diversi peta byte, migliaia di client e diverse aree dati (storage) organizzandole in blocchi che rende accessibili su Infiniband RDMA (remote direct memory access, fibra ottica) o connessioni TCP/IP.
    Le risorse “memoria e disco” vengono rese disponibili sotto un unico punto di condivisione e tali risorse possono essere montate dai client mediante tre diversi protocolli: CIFS, NFS od il client nativo Gluster.
    Questo articolo effettua una prova su strada di GlusterFS, introducendone i concetti e sperimentandone le funzionalità.
  • 800 Open Source Packages for AIX Ready for Downloading NOW (AIXpert Blog) – […] Instead of getting annoyed and complaining (like me), Michael decided to go and fix this short fall himself and a personal project and "give back" to AIX users world wide. So he compiles the open source packages on AIX and makes them freely available for download from:   http://perzl.org
       This website covers the AIX pre-compiled binaries for 800+ open source packages as RPM's and the other his hot project Ganglia for POWER, AIX and Power Linux […]
  • Variable Expansion | Variables and Parameters in the Korn Shell | InformIT – Variable expansion is the term used for the ability to access and manipulate values of variables and parameters. Basic expansion is done by preceding the variable or parameter name with the $ character. This provides access to the value.

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 25 lug 2012 from 14:52 to 15:47

These are my links for 25 lug 2012 from 14:52 to 15:47:

  • Disaster: LVM Performance in Snapshot Mode – MySQL Performance Blog – In many cases I speculate how things should work based on what they do and in number of cases this lead me forming too good impression about technology and when running in completely unanticipated bug or performance bottleneck. This is exactly the case with LVM
    Number of customers have reported the LVM gives very high penalty when snapshots are enabled (leave along if you try to run backup at this time) and so I decided to look into it.
  • Netexpertise » Mysql Ultra-Fast Backup with LVM – It is generally good practice to respect the two following points when backing up databases. The backup has to be:
    consistent
    fast
    Consistency is easily achieved putting a read lock on all tables beforehands. However, this isn’t always applied, and WILL definately lead to a database integrity problem at some stage.
    Once a lock has been set on the database, the backup has to be as quick as possible, all write instructions being held in the queue.
  • MIME and HTML in Email – How to encapsulate HTML in an email message and send via sendmail

Bookmarks for 24 lug 2012 from 17:16 to 17:32

These are my links for 24 lug 2012 from 17:16 to 17:32:

  • Five Tips for a Better sendmail Configuration – O’Reilly Media – Unix vendors bundle sendmail with the operating system and ship it out preconfigured. It is very easy to install the OS and use the sendmail configuration delivered with the system. Don't be fooled by this apparent simplicity. In the long run, it is better to take charge of your fate. Creating a custom sendmail configuration using current software and features selected for your environment will give you better performance, reliability, security, and maintainability. Here are some tips to get you started on building a better sendmail configuration.
  • Epoch Converter – Unix Timestamp Converter – Epoch & Unix Timestamp Conversion Tools
  • mylvmbackup – mylvmbackup is a tool for quickly creating backups of a MySQL server's data files. To perform a backup, mylvmbackup obtains a read lock on all tables and flushes all server caches to disk, creates a snapshot of the volume containing the MySQL data directory, and unlocks the tables again. The snapshot process takes only a small amount of time. When it is done, the server can continue normal operations, while the actual file backup proceeds.