MySQL Error : mysql is not running but lock exists

/etc/init.d/mysql status

coming back with:

mysql is not running but lock exists

Solved by removing the lock file:

rm /var/lock/subsys/mysql

Installing JBoss Java Application Server in RHEL / CentOS 5

Just execute following command:-

yum install java-1.5.0-sun-devel jbossas

For old RHEL use following command:-

up2date -i java-1.5.0-sun-devel jbossas

Done.

Monitor Network Usage / Network Status

Debain / Ubuntu Installation


Install by using following command:-

sudo apt-get update
sudo apt-get install ntop

Centos / RedHat Installation

Download the RPM packages:-

http://dag.wieers.com/rpm/packages/ntop/
http://rpmfind.net/linux/RPM/fedora/4/i386/glib-1.2.10-16.i386.html

Install all RPM packages using following command:-

rpm -ivh  glib-1.2.10-16.i386.rpm
rpm -ivh ntop-3.2-1.el4.rf.i386.rpm

After finish installion ntop for both, need to setup the admin password:-

/usr/sbin/ntop -A
OR
sudo /usr/sbin/ntop -A

Restart ntop service:-

/etc/init.d/ntop restart

by default ntop using port 3000, verify by using following command:-

netstat -tulpn | grep :3000

follow this link to view network status and usgae:-

http://localhost:3000/
or
http://{IP number}:3000/

Install Suhosin as extension / PHP harden

Download the latest version of suhosin:-

wget http://download.suhosin.org/suhosin-0.9.27.tgz

Suhosin required php-devel:-

yum install php-devel

Install suhsosin:-

cd suhosin-0.9.27
phpize
./configure
make
make install

Congfirue Suhosin congiguration file:-

echo 'extension=suhosin.so' > /etc/php.d/suhosin.ini

Restart your webserver..
blockquote>

/etc/init.d/httpd restart

Check your suhsosin:-

php -v

or crate phpinfo page.