How to install Zend Optimizer with the (IonCube) Loader? (RHEL, Plesk)

How to install Zend Optimizer with the (IonCube) Loader? wget http://downloads.zend.com/optimizer/3.3.3/ZendOptimizer-3.3.3-linux-glibc23-i386.tar.gz tar zxvf ZendOptimizer-3.3.3-linux-glibc23-i386.tar.gz cd ZendOptimizer-3.3.3-linux-glibc23-i386 php -v (Check php version note it down) php -i | grep php.ini (note down the php.ini path) httpd -v (Check version) ./install After the above it will prompt for various path of apache, php php -v (if it […]

Service Unavailable error message on a server with Plesk Windows

Plesk Error : Service Unavailable Error under Event Viewer : The identity of application pool ‘PleskControlPanel’ is invalid, so the World Wide Web Publishing Service can not create a worker process to serve the application pool. Therefore, the application pool has been disabled. Try Plesk Reconfigurator > Repair Plesk Installation with checked option Plesk Services […]

Easy apache error on a VPS – You are only only allowed to use xx Megabytes of ram! xxx Megabytes is required

Sometimes, you can get the following error on VPS while running easy apache. You can fix by simple following steps. Login in to main VPS and edit the variable PRIVVMPAGES accordingly /scripts/easyapache Use of uninitialized value in pattern match (m//) at /var/cpanel/perl/easy/Cpanel/Easy/Utils.pm line 436. !! Critical Error (VZ): You are only only allowed to use […]

DirectAdmin License Shows To Be Expired (Early License)

DirectAdmin is fully installed but we are unable to login and access the host. Steps to try and resolve this problem. Verify IP information bound to the host matches the data in /usr/local/directadmin/scripts/setup.txt Confirm the date is correct. # date Sun Jan 4 03:14:22 CST 2004 If not then set the date with ‘rdate’ or […]

iptables string match to drop malicious urls

iptables string match to drop malicious urls ================================== Usually modsecurity rules can help filter many malicious url attack patterns combined with apache on apache port (http|https).  But what if a malicious attack using a vulnerable url pattern, that exposes or tries to break into your system is coming onto another port? This is where iptables […]

Performance tuning tools: ps, top, sar, iostat, and vmstat

Performance tuning tools :by Matt Frye P.S.—I want to see my processes Being on top Sar, yes, sar! Check your system, STAT! About the author As a system administrator, part of your daily duties is to monitor systems for performance and to tune systems where necessary. While there are expensive software products and benchmarking tools […]