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
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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
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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
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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 Sunday, 29th November 2009 by Balazs

Problem
It is necessary for some users to have all their traffic directed through the OpenVPN concentrator. The number one reason for such a configuration is to protect the HTTP traffic over unsecured WiFi (a.k.a. hotspots).
Solution
Add to the bottom of the connecting client’s configuration file (typically under /etc/openvpn/clients.d the following line:
push “redirect-gateway”

Share and Enjoy:

Tags: OpenVPN, Schimo, Tunnelblick, VPN
Posted in Linux, Mac OS X, OpenBSD | Comments (Comments)

Posted on Friday, 6th November 2009 by Balazs

Summary
The AIX NIM server allows a very flexible automated installation process to deploy hundreds or AIX nodes as well as LPARs in a matter of hours. It is possible to achieve similar results using the RHEL kickstart system. This article is about a way of automating the RHEL 5 deployment directly from AIX [...]

Tags: AIX, IBM, Kickstart, NIM, RHEL
Posted in AIX, Linux | Comments (Comments)

Posted on Sunday, 30th August 2009 by Balazs

Yum update fails
I see the question of failed dependencies come up on forums quite a bit. Users post errors like:
Missing Dependency: bind-utils = 9.3.4-10.P1.el5_3.1 is needed bind-sdb-9.3.4-10.P1.el5_3.1

or
ImageMagick-perl-6.2.8.0-4.el5_1.1.x86_64 from installed has depsolving problems
–> Missing Dependency: /usr/lib64/perl5/vendor_perl/5.8.8/x86_64-linux-thread-multi is needed by package ImageMagick-perl-6.2.8.0-4.el5_1.1.x86_64

or
httpd-2.2.3-22.el5.centos.2.x86_64 from updates has depsolving problems
–> Missing Dependency: /usr/share/magic.mime is needed by package [...]

Tags: CentOS, yum
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Posted on Sunday, 7th June 2009 by Balazs

To mount a CD or DVD in an LPAR, first you need to use the media library to assign one of the CDs in the library to the LPAR. For example, using the ivm inteface:

Click on the lpar name in the “View/Modify Partitions” section
Select the optical devices tab
Create a virtual optical device if there [...]

Tags: AIX 6.1, IBM
Posted in AIX, Linux | Comments (Comments)

Posted on Sunday, 31st May 2009 by Balazs

I found this solution originally on Kreny’s Blog
Troubleshooting for “Warning: Illegal offset type in …” in PHP
Posted by kreny at December 17, 2004 02:08 AM
System Environment:
Red Hat 9.0 + Apache 2.0.52 + PHP 4.3.10 + Zend Optimizer v2.1.0 etc.

Description:I upgraded PHP 4.3.9 to 4.3.10 and when I opened my sites like phpMyAdmin or Nucleus [...]

Tags: PHP
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Posted on Friday, 29th May 2009 by Balazs

To clear the DNS cache on RedHat Linux, open a terminal window and type: service named restart
(You need to be root.)

Share and Enjoy:

Tags: DNS
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