W dream

Posted on Tuesday, 16th February 2010 by Balazs

Problem
In order to manage the 3ware raid controller under Linux, an embedded web server needs to be installed. 3ware provides a download-able tarball on their site, however, the installation on Lenny is problematic. The following steps explain how to get the install and the configuration done.
Solution

Edit /etc/apt/sources.list and add the following lines:
# 3Ware
deb [...]

Tags: 3ware, Debian, Lenny, RAID
Posted in Linux | Comments (Comments)

Posted on Wednesday, 10th February 2010 by Balazs

Problem
An OpenVZ host can share any part of its filesystem with any guest operating system running on it. This post describes how to manually mount a filesystem tree from the host OpenVZ box to a guest, and how to automate the process. We will also address an error that can happen with a [...]

Tags: Bind Mount, OpenVZ, Virtuozzo, vzctl
Posted in Linux | Comments (Comments)

Posted on Monday, 25th January 2010 by Balazs

Summary
Patching AIX can be intimidating at first for someone coming from the Windows / Linux world. AIX has capabilities that natively support production quality operations. One of these qualities is that one can install patches on an alternative volume, make that volume bootable for testing and allowing an easy way out if something [...]

Tags: AIX 6.1, IBM, Patch, smit, smitty, SUMA
Posted in AIX | Comments (Comments)

Posted on Friday, 22nd January 2010 by Balazs

Introduction
Cacti is a great tool to graph performance of the various hardware components of a network. With the use of the yum repository manager, it is very simple to install on Red Hat Enterprise Linux 5 or CentOS 5.
Install steps

First make sure that you have the dag repository configured in yum. Edit or [...]

Tags: Cacti, CentOS, RHEL 5
Posted in Linux | Comments (Comments)

Posted on Thursday, 21st January 2010 by Balazs

OS X developers do not need to use a virtual machine any longer to be able to run DB2 in their favorite development environment. The latest version of DB2 9.5 available for download works on Snow Leopard (OS X 10.6).

Tags: DB2 9.5, IBM, OS X 10.6, Snow Leopard
Posted in DB2, Mac OS X | Comments (Comments)

Posted on Thursday, 21st January 2010 by Balazs

Problem
How to view folders from the Mac that hosts the VMWare Fusion guest operating system CentOS or Red Hat Linux?
Solution

First, make sure that the VMWare Tools are installed. That always helps.
Next, in the WMWare configuration menu of the guest, set up the desired shared folders. There might be already a default shared folder [...]

Tags: CentOS, OS X 10.6, RHEL, Shared Folders, VMWare, VMWare Fusion
Posted in Linux, Mac OS X | Comments (Comments)

Posted on Thursday, 21st January 2010 by Balazs

To solve the problem, the easiest way is to flush the routes by rebooting. The elegant way however is to shut down the interface connecting the Mac to the Internet, flush the routing table, and bring the interface back up.

Tags: OpenVPN, OS X 10.6, Tunnelblick
Posted in Mac OS X | Comments (Comments)

Posted on Monday, 18th January 2010 by Balazs

Joshua Kramer has an article in LJ about Qpid and AMQP. One of the most compelling aspects of Qpid is its cross plaform and cross language capability. Finally there is a message broker that is easy to use and has ready to go clients for C++, Java, Python, Ruby and .Net. [...]

Tags: AMQP, Apache, Qpid
Posted in Java | Comments (Comments)

Posted on Tuesday, 29th December 2009 by Balazs

I have posted a number of tips to use DB2. If you haven’t used DB2 before, it is one of the best databases out there, and best of all, it is available completely free from IBM. Get your DB2 discovery kit from IBM. As Grant Allen puts it in Beggining DB2, “IBM [...]

Tags: DB2 9.7, IBM
Posted in DB2 | Comments (Comments)

Posted on Thursday, 17th December 2009 by Balazs

Problem
Even though XML schema has been around for a decade, still many APIs reference a DTD in the XML documents sent back and fourth. Such is the OpenSRS API. DB2 requires an XML schema or a DTD to be registered before it will process XML documents that refer to an XML Schema or [...]

Tags: DB2 9.7, DTD, IBM, pureXML, XML, XML Schema, XQuery
Posted in DB2 | Comments (Comments)