How to: Upgrade Red Hat Enterprise Linux (RHEL) to latest Releases 5.1

Posted on in Categories CentOS, Howto, Linux distribution, Linux Virtualization, RedHat/Fedora Linux, Sys admin, Tips last updated November 8, 2007

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.

How to upgrade lighttpd tar ball (source code) installation

Posted on in Categories CentOS, Howto, lighttpd, Linux, RedHat/Fedora Linux, Security, Suse Linux, Sys admin, Tips, Ubuntu Linux last updated September 25, 2007

Upgrading lighttpd is a piece of cake. There are two methods:

a) Use yum or apt-get or FreeBSD ports / command to update binary lighttpd package

b) Just download latest lighttpd tar ball from official web site and install the same.

Let us see how to upgrade lighttpd using source code (tar ball).

# 1 : Download lighttpd

Use wget or lftp command line http / ftp accelerator tools:
$ cd /opt
$ wget http://www.lighttpd.net/download/lighttpd-1.4.17.tar.gz

# 2 : Verify lighttpd

Use sha1sum or md5sum hash to verify lighttpd tar ball integrity:
$ md5sum lighttpd-1.4.17.tar.gz

# 3: Configure lighttpd

Now configure and compile lighttpd web server:
$ ./configure
$ make

# 4: Stop lighttpd

First stop currently running lighttpd web server:
# /etc/init.d/lighttpd stop
Make sure you are in installation directory, use the following command to uninstall old version:
# make uninstall

# 5: Install lighttpd

Just enter the following command:
# make install
Start lighttpd:
# /etc/init.d/lighttpd start
Watch out for lighttpd log files for any problems:
# tail -f /var/log/messages
# tail -f /var/log/lighttpd/error.log
# tail -f /var/log/lighttpd/scripts.log
# tail -f /var/log/lighttpd/access.log

A note about binary package upgrade method

You can download rpm file or use yum / apt-get command:
apt-get update lighttpd
yum update lighttpd