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Yellow Dog Linux v6.0 for Sony PS3, Apple G4/G5, and IBM System p. has been released. It is built upon the CentOS foundation, a popular derivative of Red Hat Enterprise Linux (RHEL), YDL v6.0. It means you can have enterprise grade Linux quality on the home computer. You can install YDL 6.0 on:

=> Sony Playstation 3 (PS3)

=> Apple PowerPC G4 and G5

=> IBM System p such as 510, 520, 540 etc

See Yellow Dog Linux 6.0 release note for more information. You can grab YDL 6.0 here. I may try it out on my PS3 for fun ;)

RHEL 5.1 has been released. Redhat announced the availability of Red Hat Enterprise Linux 5.1, with integrated virtualization. This release provides the most compelling platform for customers and software developers ever, with its industry-leading virtualization capabilities complementing Red Hat's newly announced Linux Automation strategy. It offers the industry’s broadest deployment ecosystem, covering standalone systems, virtualized systems, appliances and web-scale "cloud" computing environments.

Besides supporting Linux virtual machines, RHEL 5.1 will also support Windows XP, Windows 2000, Windows Server 2003 and the forthcoming Windows 2008, Crenshaw said. RHEL 5.1 uses Xen for its virtualization.

How do I upgrade to RHEL 5.1?

Login as the root user and simply type the command to fetch all updates via RHN:
# yum update
Depend upon your network condition and software configuration it may take anywhere between 5-20 minutes. Once completed, just reboot the server:
# reboot
Verify that everything is working fine:
# netstat -tulpn
# netstat -nat
# tail -f /var/log/messages
# egrep -i 'error|warn' /var/log/messages
# egrep -i 'error|warn' /path/to/apps/log

Community driven enterprise CentOS Linux users should expect update soon too. You can apply above commends to upgrade your CentOS box.

If you have recently updated your Red Hat Enterprise Linux Server release 5.1 (Tikanga) / CentOS 5.1, dovecot imap server might give out the following error:

Nov 5 13:21:13 p5ora1 dovecot: imap-login: imap-login: error while loading shared libraries: libsepol.so.1: failed to map segment from shared object: Cannot allocate memory
Nov 5 13:21:13 p5ora1 dovecot: pop3-login: pop3-login: error while loading shared libraries: libsepol.so.1: failed to map segment from shared object: Cannot allocate memory

This error is not related to shared libraries. You need to set maximum process size in megabytes. If you don't use login_process_per_connection you might need to grow this. Just open /etc/dovecot.conf file
# vi /etc/dovecot.conf
Find line read as follows:
login_process_size
Uncomment and set it to 64:
login_process_size = 64
Save and close the file. Restart dovecot imap server:
# /etc/init.d/dovecot restart

The Dovecot package on x86_64 (64 bit system) kernels requires the parameter "login_process_size = 64" to be added to /etc/dovecot.conf after an upgrade to RHEL / CentOS 5.1.

Currently Dell only offers Red Hat Enterprise Linux (RHEL) and Suse Novell on Dell Server. Canonical, the company that supports Ubuntu Linux, is trying to work out a deal with hardware vendors such as Dell to make Ubuntu available preinstalled on servers.

Ubuntu Desktop from Dell was the first preinstalled mainstream distro for end users. It's been hard to tell how popular the Ubuntu desktop has been for Dell, which started selling the OS in May on two desktop PCs and the Inspiron E1505n notebook. Asked how well those PCs have sold, Canonical referred the questions to Dell. A Dell spokeswoman said the figures are confidential. I'm quite sure there will be a good demand for server product too.

=> Canonical chases deals to ship Ubuntu Server preinstalled

Oracle 11g for Linux x86 has been released and available for download from official web site:
Oracle Database 11g extends Oracle's unique ability to deliver the benefits of grid computing with more self-management and automation, making it easier to innovate faster with confidence using Real Application Testing, manage more data for less with advanced partitioning and compression, and much more.

The following are the operating sytem requirements for Oracle Database 11g release 1:
=> Asianux 2.0
=> Asianux 3.0
=> Oracle Enterprise Linux 4.0
=> Oracle Enterprise Linux 5.0
=> Red Hat Enterprise Linux 4.0
=> Red Hat Enterprise Linux 5.0
=> SUSE Enterprise Linux 10.0

I'm sure you will be able to use Debian or Cent OS for testing purpose.

Download Oracle Database for Linux

=> Click here to download Oracle 11g for Linux

See also:

=> How to: Install Oracle Database XE Server on my Ubuntu / Debian Linux desktop system

VMware virtualization software is an excllent choice for x86-compatible computers. They have both commercial and free version. I received few email regarding VMWARE on 64 bit Linux. Installing VMWARE server on CentOS 5 or Red hat enterprise Linux 64 bit version is a tricky business. In this small howto I will explain vmware installation on 64 bit Linux server without facing any dependencies problem.

Following instructions are tested on both RHEL 5 and CentOS 5 running 64 bit Intel / AMD hardware and software. My kernel:
$ uname -mrs
Output:

Linux 2.6.18-8.1.6.el5 x86_64

My RHEL 5 release (same kernel for CentOS):
$ cat /etc/redhat-release
Output:

Red Hat Enterprise Linux Server release 5 (Tikanga)

Make sure you have following software installed:

  • Full gcc compiler and development environment
  • Kernel headers and devel packages for current kernel (i.e. kernel-headers and kernel-devel)

[click to continue…]

nixCraft FAQ Roundup June 19, 2007

Recently updated/posted Linux and UNIX FAQ (mostly useful to Linux/UNIX new administrators or users) :