xen

Bookmarks for 16 gen 2014 from 10:51 to 11:03

These are my links for 16 gen 2014 from 10:51 to 11:03:

  • Using KVM virtualization – Kernel Virtual Machine (KVM) virtualization has largely replaced Xen as the default open source mechanism for creating and supporting virtual machines (VMs) on most Linux systems. Though the motivation for this change is primarily build and support related rather than technical, the reality is that many enterprise IT groups that are interested in virtualization will need to learn the administrative command-and-control tools that KVM uses. Similarly, IT shops with an existing investment in Xen virtualization that are moving to KVM will probably want to convert existing VMs to the formats that KVM supports whenever possible, rather than having to re-create them.
  • Create Linux and Windows images for OpenStack private clouds – This article proposes a new way to construct Linux® and Windows® images for private clouds built with the OpenStack cloud operating system. Current image-creation methods for OpenStack environments are cumbersome and time-consuming. The authors present an online, self-service method that makes image construction faster and easier for operators and end users of private clouds.
  • The Tengine Web Server – Tengine is a web server originated by Taobao, the largest e-commerce website in Asia. It is based on the Nginx HTTP server and has many advanced features. Tengine has proven to be very stable and efficient on some of the top 100 websites in the world, including taobao.com and tmall.com. Tengine has been an open source project since December 2011. It is being actively developed by the Tengine team, whose core members are from Taobao, Sogou and other Internet companies. Tengine is a community effort and everyone is encouraged to get involved.

Bookmarks for 8 nov 2011 through 14 nov 2011

These are my links for 8 nov 2011 through 14 nov 2011:

  • using mod_auth_kerb and Windows 2000/2003/2008R2 as KDC – This tutorial contains my knowledge about using Apache/mod_auh_kerb and Windows 2000/2003/2008R2 as KDC.
  • Squid kerberos authentication and ldap authorization in Active Directory « Klaubert’s Blog – The squid web cache include a authenticator for kerberos, it is simple to use, but the documentation is not very clear about how to make it work. Below some steps use by me to make Squid 3.0 Stable1 and Squid 2.6 Stable17 authenticate against Active Directory (Windows 2003 Directory Service) and also to make it make the authorization using Ldap. This setup was not used in production environment yet, so its possible to had some problems not seen by me or scalabilities issues.
  • active directory – Getting Squid to authenticate with kerberos and Windows 2008/2003/7/XP – Server Fault – This is setup with Squid 3.0, has also been tested with Squid 3.1 and should work with Squid 2.7. Your Windows user must be a member of the SQUID_USERS group in Active Directory (for this case anyway).

    On the Windows side, Windows XP and Windows 2007 have been tested against Windows 2008, and Windows XP against Windows 2003.

  • Open vSwitch – What is Open vSwitch?

    Open vSwitch is a production quality, multilayer virtual switch licensed under the open source Apache 2.0 license. It is designed to enable massive network automation through programmatic extension, while still supporting standard management interfaces and protocols (e.g. NetFlow, sFlow, RSPAN, ERSPAN, CLI, LACP, 802.1ag). In addition, it is designed to support distribution across multiple physical servers similar to VMware's vNetwork distributed vswitch or Cisco's Nexus 1000V.

  • 21 Ruby Tricks You Should Be Using In Your Own Code – 2009 Update: This post was written in early 2008 and looking back on it, there are a couple of tricks that I wouldn't recommend anymore – or to which extra warnings need to be added. I've added paragraphs like this where necessary. Enjoy! 🙂

Bookmarks for 26 gen 2011 from 20:20 to 20:25

These are my links for 26 gen 2011 from 20:20 to 20:25:

  • Booting once-only – GNU GRUB Manual 0.97 – You can teach GRUB to boot an entry only at next boot time. Suppose that your have an old kernel old_kernel and a new kernel new_kernel. You know that old_kernel can boot your system correctly, and you want to test new_kernel.<br />
    To ensure that your system will go back to the old kernel even if the new kernel fails (e.g. it panics), you can specify that GRUB should try the new kernel only once and boot the old kernel after that.<br />
    <br />
    [ tnx to Zarrelli ]
  • Server Control Panel and Webhosting software Kloxo | LxCenter – From Kloxo HostInaBox, a light and efficient webhosting platform, to Kloxo Enterprise, a truly distributed hosting platform.<br />
    Platform Support: CentOS 5 Stable (32Bit), RHEL 5: Stable (32Bit)
  • HyperVM – OpenVZ, Xen, Windows Virtualization Manager | LxCenter – The Most Complete Virtualization Manager. Manage your entire server cluster from a single console. Free, Flexible and Open Source.<br />
    Out of the box, HyperVM will work on: CentOS 5, Fedora 2,3,4,5,6, RHEL 5

Bookmarks for 21 gen 2011 through 23 gen 2011

These are my links for 21 gen 2011 through 23 gen 2011:

  • 500 Internal Server Error – 500 Internal Server Error
  • Rotating Log Files – O’Reilly Media – Log files grow. That's what they're there for, after all. As a systems administrator, you need to be able to control log growth. FreeBSD provides a basic log file handler, newsyslog. The newsyslog program handles standard log file rotation. The oldest logs are deleted. Each old log is renamed. Finally, the current log is moved and a new log file is created. The newsyslog program can also compress files, restart daemons, and in general handle all the routine tasks of shuffling files[…]
  • OpenFiler DRBD in High Availability – […]Oggi ho deciso di presentarvi una soluzione NAS/SAN in High Availabilty basata sulla distribuzione OpenFiler (www.openfiler.com)[…]

Bookmarks for 2 dic 2010 through 14 dic 2010

These are my links for 2 dic 2010 through 14 dic 2010:

  • TSMmonitor – This script is developed to provide an easy, customizable and effective way to monitor TSM (Tivoli Storage Manager) Servers.<br />
    It is composed of functions to check specific TSM resources. Each check returns the resource status. The available status for a resource are:<br />
    Ok / Warning / CriticalThe status returned is based on defined thresholds for each check
  • How to: Ubuntu PHP Remove Suhosin – […] One of my projects for the "holidays" is moving one of my servers from Gentoo to Ubuntu. During planning for this, I noticed that the Ubuntu version of PHP5 includes Suhosin. That's a problem.<br />
    The problem with Suhosin is that it's designed to stop sloppy applications from doing bad things. I'm sure it does a reasonable job of that, but in the process it can interfere with good applications (see examples for Joomla). Since I'm in the business of writing good applications, Suhosin is a bad idea. Worse yet, it can provide a false sense of security, since it can't deal with anything except typical PHP errors. As far as I'm concerned, this class of "security blanket" provides false comfort and is no replacement for auditing and testing.<br />
    […]
  • Jean Baptiste FAVRE – Publications – Appunti e documentazione su linux, xen, DRBD, pacemaker in francese<br />
    Gli articoli su nodi xen in cluster e migrazione da xen 3.2 a 4 sono tradotti anche in inglese
  • 140 Google Interview Questions | Seattle Interview Coach – Here's a list of 140 Google interview questions. Many of our clients have interviewed and received Google job offers. 

Bookmarks for 20 ott 2010 through 2 nov 2010

These are my links for 20 ott 2010 through 2 nov 2010:

  • Software :: SendEmail – Send email with this free command line email client – SendEmail is a lightweight, command line SMTP email client. If you have the need to send email from a command line, this free program is perfect: simple to use and feature rich. It was designed to be used in bash scripts, batch files, Perl programs and web sites, but is quite adaptable and will likely meet your requirements. SendEmail is written in Perl and is unique in that it requires NO MODULES. It has an intuitive and flexible set of command-line options, making it very easy to learn and use.<br />
    SendEmail is licensed under the GNU GPL, either version 2 of the License or (at your option) any later version.<br />
    [Supported Platforms: Linux, BSD, OS X, Windows 98, Windows NT, Windows 2000, & Windows XP]
  • 500 Internal Server Error – 500 Internal Server Error
  • openQRM | openQRM keeps your data center up and running – […] openQRM is the next generation, open-source Data-center management platform. Its fully pluggable architecture focuses on automatic, rapid- and appliance-based deployment, monitoring, high-availability, cloud computing and especially on supporting and conforming multiple virtualization technologies. openQRM is a single-management console for the complete IT-infra structure and provides a well defined API which can be used to integrate third-party tools as additional plugins. […]

Bookmarks for 15 dic 2009 from 18:36 to 19:16

These are my links for 15 dic 2009 from 18:36 to 19:16:

  • Making Open Source Convenient | JumpBox Virtual Appliances and Applications for Cloud Computing – It's a ready-to-deploy virtual computer that contains a pre-configured instance of an application. Self-contained, secure and optimized – it gives you the value of Open Source software without the headaches. A JumpBox has the following qualities:

    Easy to deploy on Mac, Windows or Linux.
    Portable across operating systems and cloud environments.
    Simple to manage with a web-based administration interface.
    Protected by a built-in, automated backup system.
    Isolated from interfering with existing software.
    Flexible to allow you to move between virtual and cloud systems.
    Proven through collective usage of thousands of people

  • Waldemar Mark Duszyk – Un blog su AIX molto bello, lezioni, trucchi, script.
    Materiale base e avanzato
  • Troubleshoot Connections through the PIX and ASA – Cisco Systems – This document provides troubleshooting ideas and suggestions for when you use the Cisco ASA 5500 Series Adaptive Security Appliance (ASA) and the Cisco PIX 500 Series Security Appliance. More often than not, when applications or network sources break or are not available, firewalls (PIX or ASA) tend to be a primary target and blamed as the cause of outages. With some testing on the ASA or PIX, an administrator can determine whether or not the ASA/PIX causes the problem.
  • Ricerche IT » Sniffing del traffico di rete con Cisco ASA 5505 – Può capitare, alle volte, di trovarci nella necessità di dover fare troubleshooting sulla nostra rete in conseguenza di un qualche malfunzionamento (software o hardware che sia); in alcuni casi, può essere estremamente utile “sniffare” il traffico di rete, cioé avere in una qualche forma comprensibile all’essere umano l’insieme (o, più spesso, un sottoinsieme) delle comunicazioni che avvengono sulla rete[…]

Bookmarks for 11 dic 2009 through 15 dic 2009

These are my links for 11 dic 2009 through 15 dic 2009:

  • ASCII Paint – Enjoy drawing and viewing some crazy ascii art. Output can be in C/C++/Java style comments Assembly comments, or the million other languages that support the # – sign comments.

    Use the buttons to change what your cursor does. Hit whatever key on the keyboard you want to be drawing with.

    If you make something cool, share it! It will be added to our database of ascii art, which will become much more accessible as time goes on. Right now you can only see random Ascii Art, but there will be a voting system shortly.

    via LevySoft

  • Scapy – Scapy is a powerful interactive packet manipulation program. It is able to forge or decode packets of a wide number of protocols, send them on the wire, capture them, match requests and replies, and much more. It can easily handle most classical tasks like scanning, tracerouting, probing, unit tests, attacks or network discovery (it can replace hping, 85% of nmap, arpspoof, arp-sk, arping, tcpdump, tethereal, p0f, etc.). It also performs very well at a lot of other specific tasks that most other tools can't handle, like sending invalid frames, injecting your own 802.11 frames, combining technics (VLAN hopping+ARP cache poisoning, VOIP decoding on WEP encrypted channel, …), etc.

    via downloadblog.it

  • Mac usati e iPod usati / MacExchange – annunci di Mac o iPod usati

    via http://www.bufferoverflow.it/

  • Top 20+ MySQL Best Practices – Nettuts+ – Database operations often tend to be the main bottleneck for most web applications today. It's not only the DBA's (database administrators) that have to worry about these performance issues. We as programmers need to do our part by structuring tables properly, writing optimized queries and better code. Here are some MySQL optimization techniques for programmers.
  • Stacklet | Create Virtual Images On The Fly – This site will be the home of all development of the stacklet engine, a new way of creating bootable images for virtualization software such as Xen. In addition to hosting the software for creating images, the site will have pre-built images spanning various operating systems, distributions and application niches. This is a large undertaking and hopefully by opening the software we can elicit multiple contributors and contributions.