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Previous 30 Newer Entries Showing entries 31 to 60 of 95 Next 30 Older Entries

Displaying posts with tag: virtualization (reset)

How to create a private cloud in your laptop
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Everybody is moving to cloud architectures, although not all agree on what cloud computing is. In my limited understanding, and for the purpose of my work, cloud computing is a quick and versatile availability of virtual machines.
Now, if my purpose was deploying these machines, a private cloud in one host (namely, my laptop) would not make sense. But to create a flexible testing environment, it works very well.
Users of virtual machines software such as VMWare or VirtualBox may ask what's new here. You can create many virtual machines and use them within the same host.
True, but creating a new virtual machine in one minute without duplication of resources is not so easy. This is what this article


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CAOS Theory Podcast 2010.11.12
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Topics for this podcast:

*Our latest CAOS Special Report – Control and Community
*Red Hat releases RHEL 6
*Symbian and Oracle highlight community challenges
*The latest on government adoption of OSS from GOSCON
*Open core issue continues, now with Linux and evil twins

iTunes or direct download (31:02, 8.5MB)

Drupal 7 test drive appliance updated to 7.0-beta2, now with GUI option
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Over the weekend I updated my Drupal 7 test appliance in SUSE Studio to the Drupal 7.0-beta2 release, which was released on Oct. 23rd. I also added phpMyAdmin upon a user request, to provide a web-based method to work with the MySQL instance, if needed.

In addition to the lightweight "headless" appliance (which can only be accessed and configured via a remote network connection), I've now also created a

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Testing Drupal 7 on a virtual appliance with MySQL 5.1 and the InnoDB plugin
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The Drupal community just recently released another alpha test release of their upcoming Drupal 7 version, to shake out the remaining bugs and to encourage more users to test it.

If you would like to give it a try, but you don't have a free server handy, how about using a virtual machine instead? Using the fabolous SuSE Studio, I've created an appliance based on openSUSE 11.3, Drupal 7.0-alpha7 and MySQL 5.1 with the

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No, DRBD doesn’t magically make your application crash safe
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It is a common misconception that DRBD (or any block-level data replication) solution can magically make an application crash-safe that intrinsically isn’t. Baron highlights that misconception in a recent blog post.

I want to reiterate and stress that point here: if your application can’t reliably survive a node crash, it won’t successfully fail over on a replicated (or shared, for that matter) data device. But if it can, and DRBD is replicating synchronously, then DRBD won’t break it. In other words: try pulling the power plug on your machine while your app is running, and power back on. If your application recovers to a consistent state, you’re

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Is OpenStack Cloud Computing Rocket Science?
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There’s a real explosion of cloud platforms and management tools, it seems you can’t swing a dead cat without hitting one these days. In the commercial proprietary solutions space you have – CA’s 3Terra AppLogic, Enomaly, Nimbula, RightScale. In open source there are Eucalyptus



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Cloud Lock-in
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I wrote this post for the Zenoss community blog today, on cloud lock-in today. Rather than cross-posting I’ll just give you the lead in and you can read it there if you like.

2010 is definitely the year of the cloud, The IT world is abuzz with the benefits of cloud computing and rightfully so. Cloud computing, the logical extension of



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MariaDB 5.1.47 VMs for OpenSolaris, Ubuntu
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Mark’s done an excellent job again, getting VM’s of MariaDB 5.1.47 (release notes, changelog) out there for download. He’s also improved the bandwidth available at the box hosting these images. Get it for Ubuntu 10.04 or OpenSolaris 0906.

Related posts:

  • Ubuntu 10.04 LTS
  •   [Read more...]
    Under-provisioning: the curse of the cloud
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    A common problem I see people running into when using a cloud computing service is the trap of under-provisioning. There’s a chain effect that leads to this result: 1) people don’t understand how virtualization works, and therefore 2) they don’t realize how much of a computing resource they’re really buying, so 3) they assume they are entitled to more than they really are, and 4) they under-provision. A few other causes and effects come into play here, too. For example, the choice to use the cloud is sometimes founded on economic assumptions that frequently turn out to be wrong. The cloud service looks more economically attractive than it really is, due to under-provisioning.

    Let’s get back to this idea that people under-provision. How do I know that’s happening? I’ll use anecdotal evidence to illustrate.

      [Read more...]
    Ubuntu 10.04 LTS released, MariaDB 5.1.44/5.2-BETA VM’s available
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    A big congratulations to Ubuntu for the release of 10.04 LTS. While I haven’t had the chance to upgrade, I see everyone on Twitter and in the blogosphere say they are really like the Lucid experience.

    A couple of days ago, I made mention that there were VirtualBox images of MariaDB out there. Turns out there were so many downloads, Mark has had to upgrade his Internet connection!

    Anyway, to the point: Mark has created Ubuntu

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    VirtualBox images for MariaDB
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    Coming from a great MariaDB contributor, Mark, is:

  • MariaDB 5.1.44 / 5.2.0 Beta Binaries for Solaris 10 SPARC, and Debian GNU/Linux SPARC. Mark does a fabulous job of building these binaries, and he does them really quickly. If you’re on the SPARC platform, give it a go. Send some feedback, also.
  • Mark has also spent some time developing virtual machines. All you need to get started is download VirtualBox. Mark provides an OpenSolaris 0906 + MariaDB 5.1.44 VM as well as an
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    Cloud monitoring keeps open source in cool crowd
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    One of the first special reports I wrote for 451 Group was an analysis of the open source systems management vendors on the scene — GroundWork, Hyperic, Zenoss, OpenNMS Group, Nagios Enterprises and some others. These named ones are those that made it and while there was some reckoning in the market and there have been changes, it is interesting to see these players still plugging away, pushing into new markets and powering open source for systems, network and application monitoring and management, including cloud computing environments.

    When acquired by SpringSource a year ago, there was some question as to the real value of open source systems monitoring and management

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    April Fool
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    Relax. There is no DRBD Windows port.

    And of course, deploying Windows machines in a highly available, synchronously replicated enterprise cloud is something you can do today. Heartbeat, Pacemaker, DRBD, libvirt and KVM make an excellent, fully integrated HA virtualization stack.



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    It’s coming: DRBD for Windows
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    Unnoticed by many, DRBD ports have been spreading for some time on non-Linux platforms. AVS for (Open-)Solaris has been around for a while, and HAST for FreeBSD joined the club last autumn.

    And now, Windows. We have received a generous grant (from a source not wishing to have their identity disclosed in public) to fund a port to the Windows Server platform. Development work on this port has commenced back in mid-January.

    It’s pretty exciting technology. Rather than tying in with the standard Windows block layer infrastructure, DRBD-W (that’s just a working title, we’ll eventually come up with a spiffier marketing name) is at the core of a brand new storage architecture. Termed Hyper-S, said architecture is actually a highly scalable,

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    Tech Messages | 2010-02-24
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    A special extended edition of Tech Messages for 2010-02-20 through 2010-02-24:

      [Read more...]
    Cloud Computing and Virtualization Resources
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    I have been a little bit stubborn on my concession that cloud computing is really going to be the wave of the future. Though lately I have been playing with a lot of cloud related technologies and am hooked. Spin up 10 (or 100) Linux servers in a minute from a web page with no real systems management skills and then you



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    VMware,”Hey what ya’ building over there?”
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    Today I caught a tweet from Kara Swisher referencing some exclusive news she posted on Boomtown about VMware’s upcoming deal to buy Zimbra from Yahoo! This is would be VMware’s second acquisition of an open source ISV in under a

      [Read more...]
    ZFS and Solaris: storage optimization for the cloud
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    Cloud computing has been one of the most discussed topic over the year, and the discussion is not over because what is really being discussed is the way we will access computing an storage resources in the future. Even famous French intellectuals are giving their opinion and making predictions. Future will decide on predictions's accuracy.

    What is usually less discussed is the technology behind cloud-computing, though this is no secret that virtualization is playing a key role. Cloud data-centers will be loaded with virtual machines each of these machines potentially requiring in disk-space what a complete operating system (OS) requires, which can go up to many gigabytes. How much disk-space does a virtual machine image (vdi) really consum? The only good answer is: too much.

      [Read more...]
    ZFS and Solaris: storage optimization for the cloud
    Employee +0 Vote Up -0Vote Down

    Cloud computing has been one of the most discussed topic over the year, and the discussion is not over because what is really being discussed is the way we will access computing an storage resources in the future. Even famous French intellectuals are giving their opinion and making predictions. Future will decide on predictions's accuracy.

    What is usually less discussed is the technology behind cloud-computing, though this is no secret that virtualization is playing a key role. Cloud data-centers will be loaded with virtual machines each of these machines potentially requiring in disk-space what a complete operating system (OS) requires, which can go up to many gigabytes. How much disk-space does a virtual machine image (vdi) really consum? The only good answer is: too

      [Read more...]
    ZFS and Solaris: storage optimization for the cloud
    Employee +0 Vote Up -0Vote Down

    Cloud computing has been one of the most discussed topic over the year, and the discussion is not over because what is really being discussed is the way we will access computing an storage resources in the future. Even famous French intellectuals are giving their opinion and making predictions. Future will decide on predictions's accuracy.

    What is usually less discussed is the technology behind cloud-computing, though this is no secret that virtualization is playing a key role. Cloud data-centers will be loaded with virtual machines each of these machines potentially requiring in disk-space what a complete operating system (OS) requires, which can go up to many gigabytes. How much disk-space does a virtual machine image (vdi) really consum? The only good answer is: too

      [Read more...]
    HowTo: Using Virtualization to Secure MySQL in a Chrooted Environment
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    Chrooted environments are known to greatly improve system and application security by providing them with a higher degree of isolation. The objective is to separate as much as possible from other executables and resources the runtime environment of an application so that if a hacker get access to it,the rest of the system is not compromised. This technic is commonly used with MySQL.

    Traditionally, the chrooting applies at the file system level, by creating a separated and minimal operating system disk-image.  The operation consists in creating a set of directories (such a /chroot/etc, /chroot/tmp, /chroot/var/tmp, /chroot/usr/local/mysql etc.) and duplicate a minimal number of binary and configuration files into this new directory tree. After setting the right permissions on the new directories, the


      [Read more...]
    HowTo: Using Virtualization to Secure MySQL in a Chrooted Environment
    Employee +0 Vote Up -0Vote Down

    Chrooted environments are known to greatly improve system and application security by providing them with a higher degree of isolation. The objective is to separate as much as possible from other executables and resources the runtime environment of an application so that if a hacker get access to it,the rest of the system is not compromised. This technic is commonly used with MySQL.

    Traditionally, the chrooting applies at the file system level, by creating a separated and minimal operating system disk-image.  The operation consists in creating a set of directories (such a /chroot/etc, /chroot/tmp, /chroot/var/tmp, /chroot/usr/local/mysql etc.) and duplicate a minimal number of binary and configuration files into this new directory tree. After setting the right permissions on the new directories, the


      [Read more...]
    HowTo: Using Virtualization to Secure MySQL in a Chrooted Environment
    Employee +0 Vote Up -0Vote Down

    Chrooted environments are known to greatly improve system and application security by providing them with a higher degree of isolation. The objective is to separate as much as possible from other executables and resources the runtime environment of an application so that if a hacker get access to it,the rest of the system is not compromised. This technic is commonly used with MySQL.

    Traditionally, the chrooting applies at the file system level, by creating a separated and minimal operating system disk-image.  The operation consists in creating a set of directories (such a /chroot/etc, /chroot/tmp, /chroot/var/tmp, /chroot/usr/local/mysql etc.) and duplicate a minimal number of binary and configuration files into this new directory tree. After setting the right permissions on the new directories, the


      [Read more...]
    VirtualBox Factory: HowTo Automate VBox Provisioning in a Cloud
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    For many years now, Sun provides ISVs with on-line access to Solaris, MySQL, PostgreSQL, Java, Netbeans, compilers, and much more.  This service is named EZQual and is used to evaluate Sun software,  and port and test applications on the Sun platform. To satisfy the demand we must be able to host many ISVs on a single system so we decided from scratch that the service would be implemented using virtualization, just like a cloud. Also, to provide a better user experience we decided to offer a remote desktop feature that, in conjunction with the virtualiztion, really offers what is known as a virtual desktop.

    So far virtualization has been based on Solaris containers. Amongst other advantages, containers are easily provisioned by cloning a first


      [Read more...]
    VirtualBox Factory: HowTo Automate VBox Provisioning in a Cloud
    Employee +0 Vote Up -0Vote Down

    For many years now, Sun provides ISVs with on-line access to Solaris, MySQL, PostgreSQL, Java, Netbeans, compilers, and much more.  This service is named EZQual and is used to evaluate Sun software,  and port and test applications on the Sun platform. To satisfy the demand we must be able to host many ISVs on a single system so we decided from scratch that the service would be implemented using virtualization, just like a cloud. Also, to provide a better user experience we decided to offer a remote desktop feature that, in conjunction with the virtualiztion, really offers what is known as a virtual desktop.

    So far virtualization has been based on Solaris containers. Amongst other advantages, containers are easily provisioned by cloning a


      [Read more...]
    VirtualBox Factory: HowTo Automate VBox Provisioning in a Cloud
    Employee +0 Vote Up -0Vote Down

    For many years now, Sun provides ISVs with on-line access to Solaris, MySQL, PostgreSQL, Java, Netbeans, compilers, and much more.  This service is named EZQual and is used to evaluate Sun software,  and port and test applications on the Sun platform. To satisfy the demand we must be able to host many ISVs on a single system so we decided from scratch that the service would be implemented using virtualization, just like a cloud. Also, to provide a better user experience we decided to offer a remote desktop feature that, in conjunction with the virtualiztion, really offers what is known as a virtual desktop.

    So far virtualization has been based on Solaris containers. Amongst other advantages, containers are easily provisioned by cloning a


      [Read more...]
    Shooting with Crossbows into Zones
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    Ok, so this site (and some other stuff) is now running on OpenSolaris. The previous previous article was mostly a test entry for me to see whether the DNS update was through but as some people wonder why I'm using this system that "fails while trying to copy Linux" I decided to discuss some of the reasons in more detail.

    Some people already know that my main system meanwhile runs OpenSolaris. The reason there is DTrace - a great way to see what the system, from the kernel, over userspaces programs, into a VM like the JVM or PHP's Zend VM, ... is doing which is a big help while debugging and developing applications. Even though DTrace is meant to do such analysis on

      [Read more...]
    Got Interviewed
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    by @botchagalupe
    on Virtualization, Open Source tools and DNS Problems

    Technorati Tags: dnsproblem drupal ha heartbeat linux-ha mysql pacemaker puppet virtualization xen
      [Read more...]
    Cloud Computing Ideal for Shared-Disk Databases
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    Cloud computing is disrupting many aspects of computing. One need only witness the manner in which online applications like Google Docs and Salesforce.com are disrupting entrenched competitors. Soon, cloud computing will significantly disrupt the database market, for the reasons explained below.

    One of the most powerful arguments in technology is the price/performance ratio. Significant declines in price or significant increases in performance can result in disruption. When you get both price declines and performance increases, you get significant disruption. This is exactly what is coming to the database market.

    The Past
    Moore’s Law enabled the CPU to process data faster than the hard disk drive could get the data to the CPU. Because getting data to the CPU was the bottleneck, the database that solved that bottleneck would have a performance

      [Read more...]
    Cloud Computing Ideal for Shared-Disk Databases
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    Cloud computing is disrupting many aspects of computing. One need only witness the manner in which online applications like Google Docs and Salesforce.com are disrupting entrenched competitors. Soon, cloud computing will significantly disrupt the database market, for the reasons explained below.

    One of the most powerful arguments in technology is the price/performance ratio. Significant declines in price or significant increases in performance can result in disruption. When you get both price declines and performance increases, you get significant disruption. This is exactly what is coming to the database market.

    The Past
    Moore’s Law enabled the CPU to process data faster than the hard disk drive could get the data to the CPU. Because getting data to the CPU was the bottleneck, the database that solved that bottleneck would have a

      [Read more...]
    Previous 30 Newer Entries Showing entries 31 to 60 of 95 Next 30 Older Entries

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