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…

In this howto i will describe how to install subversion with TRAC. Subversion is an open source version control system alternative to CVS and TRAC an enhanced wiki and issue tracking system for software development projects which provides an interface to Subversion. I install it on CentOS 5.4 which is already running as Web Server. I will use sohailriaz.com source to be maintain by Subversion and TRAC to track all development. Read the rest of this entry…

Today tip is how to retrieve PLESK admin password. The PLESK admin password is stored in /etc/psa/.psa.shadow file and you can see it by issuing following command.

cat /etc/psa/.psa.shadow

In PLESK root user is to manage server and admin user is to manage PLESK Control Panel with database (be remember there is no root for database in PLESK, use admin).

In this how to i will describe how to install memcached on your server with PHP Extension.  memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. My server is running CentOS 5.3 with CPanel. Read the rest of this entry…

In this how to i will describe how to install RED5 server on Centos 5.3. This how to can be used to install RED5 server on Centos 4 and Fedora 8 – 11 as well. RED5 is open source flash server written in java supports streaming audio/video, recording client streams, shared objects, live stream publishing etc. Read the rest of this entry…

In this howto i will describe how to install /configure full feature firewall on your server using Config Server Firewall (CSF)  script from http://www.configserver.com. Firewall are the basic need of every server now a days and people trying to protect there server by using different scripts but CSF gives all in one solution. The tools available for the implementing are either over-complex, not user friendly, or simply aren’t as effective as they could be. So that is the reason CSF developed. Read the rest of this entry…

This is a small script which we used to setup on our large cluster of webservers to see loadavg on terminal or putty title. This was very useful as you dont have to run top or w command to see what’s the current loadavg. It automatically updated the loadavg value every 2 seconds (it can be increased or decreased) on title of terminal or putty screen. Additionally it shows hostname and current time & date with loadavg. Read the rest of this entry…

In this howto i will describe how to execute MySQL commands on BASH shell and do more on results. The beauty of BASH is that you can developed a script which help you to do different, repeated and can execute different MySQL commands on result of previous MySQL command result. My primary example is to drop all tables in MySQL database using BASH shell. Read the rest of this entry…

In this howto i will describe how to install mytop package on CentOS 5.3. MyTOP is top command clone to monitor mysql performance including queries, threads etc. You can get source of it from here to build or you can use rpmforge repositories for pre-build rpms. The machine i used to demonstrte is in production and getting very high mysql access, its running on CentOS 5.3. Read the rest of this entry…