Check Installing CentOS 6.2 on VMware and mounting partitions with noatime posts.
This is very important performance tuning for any web server more information here
#adduser www first http://gadelkareem.com/2012/02/26/adding-new-users-and-admins-to-linux-server/
ulimit -n unlimited - www
#check default number of concurrently open file descriptors
cat /proc/sys/fs/file-max
#set the number to high value depending on server config
echo '1773914' > /proc/sys/fs/file-max
echo 'fs.file-max=1773914' >> /etc/sysctl.conf
/sbin/sysctl -w fs.file-max=1773914
Check Installing CentOS 6.2 on VMware and increase linux file descriptors posts.
This should help reduce disk IO by telling the system not to update inode access times. more here
vi /etc/fstab
#add noatime to the options of the / file system ex:
/dev/mapper/vg_centos6-lv_root / ext4 defaults,noatime 1 1
– remount file system
mount -o remount /
#check
cat /proc/mounts | grep noatime
Check Installing CentOS 6.2 on VMware post.
– configure ssh port
cp /etc/ssh/sshd_config /etc/ssh/sshd_config.old
vi /etc/ssh/sshd_config
#uncomment port 22 and change to
port 4568
– enable X11 forwarding
#install needed libraries
yum -y install xorg-x11-xauth xorg-x11-fonts-base liberation-fonts
vi /etc/ssh/sshd_config
#add
X11Forwarding yes
X11DisplayOffset 10
X11UseLocalhost yes
– restart sshd
/etc/init.d/sshd restart
Now you should connect to 192.168.126.128:4568
– disable SELINUX
vi /etc/selinux/config
#change
SELINUX=disabled
– reboot or run
setenforce 0
– add iptables rules
Check Installing CentOS 6.2 on VMware post.
Adding Hostname to Linux server
vi /etc/hosts
# add
127.0.0.1 localhost.localdomain localhost
192.168.126.128 centos6.vmware.local
vi /etc/sysconfig/network
#change
HOSTNAME=centos6.vmware.local
hostname centos6.vmware.local
