In this howto i will describe how to fix MySql error ‘Could not parse relay log event entry’. On one of my client database replication cluster we got issue of ‘Could not parse relay log event entry’ on slaves. On investigating it found he has deleted some relay log files to free up the space. You can see the error in show slave status command on Last_Error field. Read the rest of this entry…

In this howto i will describe quick fix for Access Points not shown in Fedora 13 even you install Broadcom wireless driver using rpmfusion.org. For those who doesn’t know how to install broadcom driver for wireless card, you need to do following steps to install broadcom driver for wireless card. Read the rest of this entry…

In this howto i will describe how to let root user to Graphical Login in Fedora 13. From Fedora 10 it was disable by default to let it login from GUI.We will be configure pam authentication files gdm and gdm-password respectively. Read the rest of this entry…

In this howto i will describe how to install Skype on Fedora 13 64bit. As Skype dont provide 64bit version of Skype for Fedora. We can use i586 version of Skype and to achieve this we need to install i686 libraries. This howto can be used to install Skype on 64bit Fedora 10 – 11 – 12 – 13. Read the rest of this entry…

In this howto i will describe how to upgrade Fedora 12 to Fedora 13. There are graphical and command line method and i will be using command line because it works on all kind of systems i.e Laptop, Desktop or any online server. Read the rest of this entry…

In this howto i will describe how to add multiple bonding interface (teaming multiple ethernet interfaces) in LINUX. You can learn more about bonding from

vi /usr/share/doc/kernel-doc-2.6.18/Documentation/networking/bonding.txt

The Linux bonding driver provides a method for aggregating multiple network interfaces into a single logical “bonded” interface. The behavior of the bonded interfaces depends upon the mode; generally speaking, modes provide either hot standby or load balancing services. Additionally, link integrity monitoring may be performed. Read the rest of this entry…

In this howto i will describe how to update PHP rpms on servers to latest version. If you have server running CentOS/Fedora/RHEL, you will noticed that it will use regular rpms of distro to install PHP and to update you have to restrict yourself with distro update of said rpms of PHP, which can be not a major update. Read the rest of this entry…

Today i face an issue, which is quite old and i experienced a lot with it and i usually doing reboot to fix it but you cannot reboot your production server. The issue founds on RHEL, Fedora and CentOS system that whenever you run any rpm command i.e trying to install any software or query rpm database, it just stuck after enter and wont do anything.

After diagnosing it, I found up2date is running on my server, so first thing just clear that if something related to rpm is running including yum or up2date, it will lock some files to do any other rpm transaction.

I use kill command to kill the process of up2date but still the problem was same, rpm got stuck / hang and wont do anything further.

Then i issued lsof command to find which files were locked and in used by any old or dead process related to rpm

lsof | grep /var/lib/rpm/

I found /var/lib/rpm/__db* are locked by some process maybe up2date, so i need to delete them to release rpm database for further transaction.

rm -rf /var/lib/rpm/__db*

and it works, all the installation/query of rpm working absolutely fine. I hope this will help.

I encountered an error while installing Solaris 10 under my KVM running on Fedora 12. I get following error after booting Solaris 10 and select Solaris for booting to start installation

panic[cpu0]/thread=xxxxxxxx: page_unlock: page xxxxxxx is not locked

After searching i found that minimal required RAM for installation of Solaris 10 is 768MB and i was using 512MB. So i increase the RAM under my KVM configuration and bingo the installation starts smoothly.

In this howto i will describe how to import large mysql dump files without PHPMyAdmin and Shell Access. I am writing this howto because my hosting company (well most of them) wont allow to import very large files using MySQL dump files. Like Godaddy.com limit you to import only 2MB file using PHPMyAdmin. This also goes to large mysql dump files which has extremely high queries like i have more than 146000 records in one table. Read the rest of this entry…