Showing entries 91 to 100 of 102
« 10 Newer Entries | 2 Older Entries »
Displaying posts with tag: virtualization (reset)
First official release of DRBD User’s Guide


After a month of intense public review by our community users and contributors, we have made the initial “official” release of the DRBD User’s Guide.

This does not only include helpful information about building, installing, and configuring DRBD, but also on DRBD integration with Xen and LVM, Heartbeat, and many other applications. MySQL users will find the example MySQL HA configurations for both Heartbeat R1 and Heartbeat CRM clusters particularly helpful.

The release announcement is here: http://lists.linbit.com/pipermail/drbd-user/2008-March/009071.html

[Read more]
MySQL Benchmark UltraSPARC T2 beats Xeon on Consolidation of OLTP & Web

Recently we put together a consolidation benchmark to see how an open-source stack performs against the proprietary stack from Microsoft. Solaris, MySQL, and Sun Web Server running on the open-source UltraSPARC T2 processor were pitted against a Microsoft SW stack running on a 4-socket QC Xeon server. This benchmark highlights the continued trend to incorporate MySQL open-source databases and how it works under virtualization (Solaris Zones).

The Sun SPARC Enterprise T5220 (1.4 Ghz UltraSPARC T2 processor) and Solaris Containers managing a consolidation of Open-Source Software components (MySQL Database and Sun Java System Web Server) provided 2.4 times better performance than the HP DL580 system (four Xeon quad-core processors) and a major virtualization software, Microsoft Windows 2003 Server EE, Microsoft SQLserver database and Microsoft IIS webserver.

The Sun SPARC Enterprise T5220 using the MySQL database in Solaris zones is …

[Read more]
MySQL Benchmark UltraSPARC T2 beats Xeon on Consolidation of OLTP & Web

Recently we put together a consolidation benchmark to see how an open-source stack performs against the proprietary stack from Microsoft. Solaris, MySQL, and Sun Web Server running on the open-source UltraSPARC T2 processor were pitted against a Microsoft SW stack running on a 4-socket QC Xeon server. This benchmark highlights the continued trend to incorporate MySQL open-source databases and how it works under virtualization (Solaris Zones).

The Sun SPARC Enterprise T5220 (1.4 Ghz UltraSPARC T2 processor) and Solaris Containers managing a consolidation of Open-Source Software components (MySQL Database and Sun Java System Web Server) provided 2.4 times better performance than the HP DL580 system (four Xeon quad-core processors) and a major virtualization software, Microsoft Windows 2003 Server EE, Microsoft SQLserver database and Microsoft IIS webserver.

The Sun SPARC Enterprise T5220 using the MySQL database in Solaris zones is …

[Read more]
MySQL Benchmark UltraSPARC T2 beats Xeon on Consolidation of OLTP & Web

Recently we put together a consolidation benchmark to see how an open-source stack performs against the proprietary stack from Microsoft. Solaris, MySQL, and Sun Web Server running on the open-source UltraSPARC T2 processor were pitted against a Microsoft SW stack running on a 4-socket QC Xeon server. This benchmark highlights the continued trend to incorporate MySQL open-source databases and how it works under virtualization (Solaris Zones).

The Sun SPARC Enterprise T5220 (1.4 Ghz UltraSPARC T2 processor) and Solaris Containers managing a consolidation of Open-Source Software components (MySQL Database and Sun Java System Web Server) provided 2.4 times better performance than the HP DL580 system (four Xeon quad-core processors) and a major virtualization software, Microsoft Windows 2003 Server EE, Microsoft SQLserver database and Microsoft IIS webserver.

The Sun SPARC Enterprise T5220 using the MySQL database in Solaris zones is …

[Read more]
Book review: "Xen Virtualization" by Prabhakar Chaganti (Packt Publishing)

I recently received a review copy of the book "Xen Virtualization" by Prabhakar Chaganti (Packt Publishing) and finished reading it a few days ago.

The subtitle "A fast and practical guide" is a matching description - I managed to read the ~130 pages over the course of a week. The book is by no means an exhaustive reference manual, but it gives the reader a good overview about Xen and assists with performing the first steps and getting started.

 


Continue reading "Book review: "Xen Virtualization" by Prabhakar Chaganti (Packt Publishing)"

SXDE 1/08 is Released!

 

Sun Microsystems has released Solaris Express Developer Edition 1/08, Sun's free OpenSolaris-based distribution targeted at developers.

This release brings together integrated web stack (Apache, MySQL, Ruby, Php, PostgreSQL), NetBeans 6.0, interoperability with Microsoft's CIFS protocol, support for virtual machines via Sun xVM hypervisor, based on  technology developed by the Xen community, Sun HPC ClusterTools based on the Open MPI effort.

There are …

[Read more]
Free Virtualization, and Sun's Q2 Results

Please read the luculent Safe Harbor Statement at the bottom of this page....

We released our official earnings on Thursday last week, after pre-announcing the news one week prior alongside the announcement of our intent to acquire MySQL.

Our second quarter financial announcement came down to this: we doubled our profitability compared to a year ago, with $260 million in net income on revenues of $3.6 billion, while generating $336 million in cash from operations. We also repurchased $750 million of our own shares within the quarter, and reaffirmed our guidance for the full year of low to mid …

[Read more]
Becoming a DBA, Part II

This is a follow-up to part I from last week. You've considered what you want to do, you've looked at your soft skills, and you still want to be a DBA. How then do you get started?

The first thing to do is decide which platform you're going to focus on. Each "flavor" has its own proprietary tools and commands. While all share a basic SQL language foundation, DBCC CHECKDB() doesn't run on MySQL and DESCRIBE doesn't get you anything SQL Server. Likewise, SQL Server Management Objects (SMO) don't help you with Oracle and if you're looking for " …

[Read more]
When not to use DRBD


Now you may not believe me, but there actually are situations when DRBD is not the right choice for meeting your storage needs. Since I’ve been asked to compile some of these and present them here, let’s take a look.

Don’t use DRBD when…

  • All or most of your data is static. Front-end web servers are a prime example for this. Even though they usually serve highly dynamic content these days, your PHP documents and Perl scripts and JSP’s usually don’t change that often. Using DRBD for that type of data isn’t much use. Use DRBD for your backend store instead. On the front end, you’ll do fine with rsync, although it …
[Read more]
Using DRBD directly (without a file system)

Some applications require direct access to a block device, without an intermediate file system. Some Oracle and MySQL configurations are an example, as are some Xen setups, or IET. Can you do this with DRBD? Sure you can.

However, you need to fulfill two prerequisites:

  1. Your application can’t access DRBD while it’s in the Secondary role. So, you must make sure DRBD is Primary before your application attempts using that device.
  2. The user in whose context your application runs needs read/write access to that device.

Your cluster manager, when configured properly, normally takes care of item #1 for you. #2 is a little trickier:
Normally, DRBD’s device nodes are owned by root:disk, with permission bits set to 0660 (rw-rw----). So in order to allow your application to use the device, you have two options:

  • Add …
[Read more]
Showing entries 91 to 100 of 102
« 10 Newer Entries | 2 Older Entries »