create database wikidb;
grant index, create, select, insert, update, delete, alter, lock tables on wikidb.* to 'mediawiki'@'localhost' identified by 'GiveAPasswordHere';
exit

11] "cd /var/www/lighttpd"
12] "wget http://download.wikimedia.org/mediawiki/1.18/mediawiki-1.18.2.tar.gz"
13] "tar xzpf mediawiki-1.18.2.tar.gz"
14] "mv mediawiki-1.18.2 wiki"
15] "chown -R lighttpd:lighttpd wiki"
16] "vi /etc/lighttpd/lighttpd.conf", and set:
server.use-ipv6 = "disable"
server.bind = "(the installation's IP address or hostname)"
server.max-connections = 512
17] "vi /etc/lighttpd/modules.conf", and uncomment:
include "conf.d/fastcgi.conf"
18] "vi /etc/lighttpd/conf.d/fastcgi.conf", and append:
fastcgi.server = ( ".php" =>
( "localhost" =>
(
"socket" => "/var/run/lighttpd/php-fastcgi.socket",
"bin-path" => "/usr/bin/php-cgi",
"max-procs" => 5,
"bin-environment" => (
"PHP_FCGI_CHILDREN" => "16",
"PHP_FCGI_MAX_REQUESTS" => "10000" ),
"broken-scriptfilename" => "enable"
)
)
)
19] "mkdir /var/lib/php/session"
20] "chmod 770 /var/lib/php/session"
21] "chown root:lighttpd /var/lib/php/session"
22] "chown root:lighttpd /var/lib/php"
23] "chmod 775 /var/www/lighttpd/wiki/images"
24] "vi /etc/php.ini"

post_max_size = 128M
upload_max_filesize = 128M
cgi.fix_pathinfo=1

25] Open ports 80. You may use "system-config-firewall-tui".
26] "service lighttpd restart"
27] Setup MediaWiki by visiting in a browser: http://(IP or hostname of MediaWiki installation)/wiki . I used "wikidb" for the database name, and "mediawiki" for the database username. Please use the password you substituted above. You may also use "PHP object caching" when the option shows up.
28] Save your "LocalSettings.php" file when it becomes available for download. And then put it in your /var/www/lighttpd/wiki MediaWiki installation.
29] To enable file uploads (Warning: Your default directory for uploads /var/www/lighttpd/wiki/images/ is vulnerable to arbitrary scripts execution.):
"vi /var/www/lighttpd/wiki/LocalSettings.php"

$wgEnableUploads = true; # Set this to true
# Append the following:
$wgFileExtensions = array('png','gif','jpg','jpeg','doc','xls','mpp','pdf','ppt','tiff','bmp','docx', 'xlsx', 'pptx','ps','odt','ods','odp','odg','exe');
$wgFileBlacklist = array_diff( $wgFileBlacklist, array ('exe') );

30] "chkconfig lighttpd on"
31] "chkconfig mysqld on"
32] "chkconfig sendmail on"
33] "service sendmail start"
34] Congratulations, you've setup MediaWiki. Test to verify.
Note: Logo is in (Lighttpd server root)/wiki/skins/common/images/wiki.png

create database wikidb;
grant index, create, select, insert, update, delete, alter, lock tables on wikidb.* to 'mediawiki'@'localhost' identified by 'GiveAPasswordHere';
exit

7] "cd /var/www/html"
8] "wget http://download.wikimedia.org/mediawiki/1.18/mediawiki-1.18.2.tar.gz"
9] "tar xzpf mediawiki-1.18.2.tar.gz"
10] "mv mediawiki-1.18.2 wiki"
11] "chown -R apache:apache wiki"
12] "vi /etc/httpd/conf/httpd.conf", and append the following:

<Directory "/var/www/html/wiki/images">
Options -Indexes
# Ignore .htaccess files
AllowOverride None

# Serve HTML as plaintext, don't execute SHTML
AddType text/plain .html .htm .shtml .php

# Don't run arbitrary PHP code.
php_admin_flag engine off

# If you've other scripting languages, disable them too.
</Directory>

13] Also, you may need to set "ServerName" in /etc/httpd/conf/httpd.conf .
14] "chmod 775 /var/www/html/wiki/images"
15] "vi /etc/php.ini"

post_max_size = 128M
upload_max_filesize = 128M

16] Open ports 80 and 443. You may use "system-config-firewall-tui".
17] "service httpd restart"
18] Setup MediaWiki by visiting in a browser: http://(IP or hostname of your installation)/wiki . I used "wikidb" for the database name, and "mediawiki" for the database username. Please use the password you substituted above. You may also use "PHP object caching" when the option shows up.
19] Save your "LocalSettings.php" file when it becomes available for download. And then put it in your /var/www/html/wiki MediaWiki installation.
20] "vi /var/www/html/wiki/LocalSettings.php"

$wgEnableUploads = true; # Set this to true
# Append the following:
$wgFileExtensions = array('png','gif','jpg','jpeg','doc','xls','mpp','pdf','ppt','tiff','bmp','docx', 'xlsx', 'pptx','ps','odt','ods','odp','odg','exe');
$wgFileBlacklist = array_diff( $wgFileBlacklist, array ('exe') );

21] "chkconfig httpd on"
22] "chkconfig mysqld on"
23] "chkconfig sendmail on"
24] Congratulations, you've setup MediaWiki. Test to verify.

AuthUser=<your Google username>@gmail.com
AuthPass=<your password>
FromLineOverride=YES
mailhub=smtp.gmail.com:587
UseSTARTTLS=YES

6]To test: echo "Testing" | mail -s "Test Email" (your e-mail address)

1] Login as root.
2] "yum install perl-Net-XMPP"
3] Download notify_via_jabber , and save it to /usr/lib64/nagios/plugins .
4] "vi /usr/lib64/nagios/plugins/notify_via_jabber", look for the following 2 lines, and adjust properly.

my $username = "your.google.username";
my $password = "your.google.password";

5] "chmod 755 /usr/lib64/nagios/plugins/notify_via_jabber"
6] To test: "/usr/lib64/nagios/plugins/notify_via_jabber (Google username of intended recipent) test". If you get a "Cannot resolve (your server's hostname): at /usr/share/perl5/XML/Stream.pm line 406.", add your server's hostname to 127.0.0.1 in /etc/hosts. Then test again.
7] "vi /etc/nagios/objects/commands.cfg", and put in the following:

define command{
command_name host-notify-by-jabber
command_line /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$ \nState: $HOSTSTATE$\n Address: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" | /usr/lib64/nagios/plugins/notify_via_jabber $CONTACTPAGER$ "** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **"
}

define command{
command_name notify-by-jabber
command_line /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$ \nState: $HOSTSTATE$\n Address: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" | /usr/lib64/nagios/plugins/notify_via_jabber $CONTACTPAGER$ "** $NOTIFICATIONTYPE$ Service Alert: $SERVICEDESC$ on $HOSTNAME$ State: $SERVICESTATE$ Additional Info: $SERVICEOUTPUT$ **"
}

8] "vi /etc/nagios/objects/templates.cfg" and add the following contact template:

define contact{
name jabber-contact ; The name of this contact template
service_notification_period 24x7 ; service notifications can be sent anytime
host_notification_period 24x7 ; host notifications can be sent anytime
service_notification_options w,u,c,r,f,s ; send notifications for all service states, flapping events, and scheduled downtime events
host_notification_options d,u,r,f,s ; send notifications for all host states, flapping events, and scheduled downtime events
service_notification_commands notify-by-jabber ; send service notifications via email
host_notification_commands host-notify-by-jabber ; send host notifications via email
register 0 ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL CONTACT, JUST A TEMPLATE!
}

9] "vi /etc/nagios/objects/contacts.cfg" and insert the following (adjust appropriately):

define contact {
contact_name michael-jabber
use jabber-contact
alias Michael Balcos - Google Talk
email (your Google username)@gmail.com
pager (your Google username)
}

10] Add your contact name in the "admins" contact group in the /etc/nagios/objects/contacts.cfg file. EG:

define contactgroup{
contactgroup_name admins
alias Nagios Administrators
members nagiosadmin,michael-jabber
}

11] "nagios -v /etc/nagios/nagios.cfg" to check configuration.
12] "service nagios restart"

2] Setup networking. I used the "192.168.1.0/24" network. Here's my guide for setting up networking: http://blog.malaya-digital.org/setup-a-minimal-centos-6-0-64-bit-setup-with-networking/

3] Login as root.

4] Turn off selinux by issuing in a shell as root:
# setenforce 0
... and then editing /etc/sysconfig/selinux to set:
SELINUX=disabled

5] yum -y update

6] yum -y install wget

7] cd /root

8] wget http://mirror.nus.edu.sg/fedora/epel/6/x86_64/epel-release-6-5.noarch.rpm

9] rpm -Uvh epel-release-6-5.noarch.rpm

10] rpm --import http://download.openvz.org/RPM-GPG-Key-OpenVZ

11] cd /etc/yum.repos.d

12] wget http://download.openvz.org/openvz.repo

13] To see kernels to choose: yum search vzkernel

14] I chose: yum install vzkernel.x86_64 vzkernel-headers.x86_64 vzkernel-devel.x86_64 vzkernel-firmware.noarch

15] vi /etc/yum.conf

... and make sure you have a "exclude=kernel*" line under the [main] section.

16] vi /boot/grub/menu.lst # check if you'll be booting the OpenVZ kernel. You can "rpm -ql vzkernel.x86_64 | grep \/boot\/vmlinuz" for more information on the OpenVZ kernel package.

17] yum install vzctl vzquota # packages may have been installed already, but do this just to make sure.

18] vi /etc/sysctl.conf

Make sure you have the following settings:

net.ipv4.ip_forward = 1
net.ipv4.conf.default.proxy_arp = 0
net.ipv4.conf.all.rp_filter = 1
kernel.sysrq = 1
net.ipv4.conf.default.send_redirects = 1
net.ipv4.conf.all.send_redirects = 0
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.conf.default.forwarding = 1
net.ipv6.conf.default.forwarding = 1
net.ipv6.conf.all.forwarding = 1

19] shutdown -r now

20] "vi /etc/vz/vz.conf" and set:

NEIGHBOUR_DEVS=all

21] service iptables stop

22] chkconfig iptables off

23] shutdown -r now

24] To create a container:

cd /vz/template/cache
wget http://download.openvz.org/template/precreated/centos-6-x86.tar.gz
vzctl create 101 --ostemplate centos-6-x86
vzctl set 101 --ipadd 192.168.1.215 --save
vzctl set 101 --nameserver 208.67.222.222 --nameserver 208.67.220.220 --save
vzctl set 101 --hostname "my.new.container.com" --save
vzctl set 101 --onboot yes --save
vzctl start 101

25] To set time zone to Singapore for both host and container:

rm -rf /etc/localtime 2>/dev/null; unlink /etc/localtime 2>/dev/null
ln -s /usr/share/zoneinfo/Asia/Singapore /etc/localtime
vzctl exec 101 rm -rf /etc/localtime 2>/dev/null
vzctl exec 101 unlink /etc/localtime 2>/dev/null
vzctl exec 101 ln -s /usr/share/zoneinfo/Asia/Singapore /etc/localtime

26] To enter container:

vzctl enter 101

Some usefull stuff(stop your container before doing these):

Adjust disk space:

vzctl set 101 --diskspace 4096000 --save

Adjust memory(Guaranteed 512MB and 1024MB Burstable):

vzctl set 101 --vmguarpages 512M --save
vzctl set 101 --oomguarpages 512M --save
vzctl set 101 --privvmpages 512M:1024M --save

htpasswd /etc/nagios/passwd nagiosadmin

9] To check Nagios configuration file for errors:

nagios -v /etc/nagios/nagios.cfg

10] Open port 443 for secure web access.
11] "usermod -a -G nagios apache"
12] "chkconfig nagios on"
13] "chkconfig httpd on"
14] "chkconfig sendmail on"
15] "service sendmail restart"
16] Edit /etc/httpd/conf/httpd.conf, and appropriately configure "ServerName". Also, edit /etc/httpd/conf.d/nagios.conf , and uncomment all "SSLRequireSSL" lines.
17] "service httpd restart"
18] Edit /etc/nagios/nagios.cfg, and uncomment "cfg_dir=/etc/nagios/servers".
19] Append to /etc/nagios/objects/commands.cfg:

define command{
command_name check_nrpe
command_line /usr/lib64/nagios/plugins/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}

20] "mkdir /etc/nagios/servers"
21] "chown root:nagios /etc/nagios/servers"
22] "service nagios restart"
23] Open https://(IP or hostname of Nagios server)/nagios . Enter the credentials for the nagiosadmin user.

To configure a CentOS 6 64-bit Nagios NRPE client:
1] "yum update"
2] "vi /etc/sysconfig/selinux" and set "SELINUX=disabled".
3] "setenforce 0"
4] "shutdown -r now"
5] "rpm -ivh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-5.noarch.rpm"
6] "yum install nagios-plugins-nrpe nagios-plugins-all nagios-nrpe openssl"
7] Edit /etc/yum.conf and append this to the "[main]" section:

exclude=nagios*

8] Edit /etc/nagios/nrpe.cfg . Look for:

allowed_hosts=127.0.0.1

Add the IP of your Nagios server. And add the IP of the Nagios client. Eg:

allowed_hosts=127.0.0.1,10.1.34.53,10.1.34.32

Also look for:

server_address=127.0.0.1

Assign the IP of your Nagios client. Eg:

server_address=10.1.34.32

9] "chown nrpe:nrpe /etc/nagios/nrpe.cfg"
10] Add to /etc/services :

nrpe 5666/tcp # NRPE

11] "chkconfig nrpe on"
12] "service nrpe restart"
13] open port 5666/tcp
14] To check if NRPE is working on the Nagios client(substitute the IP of the Nagios client; this command is to be executed on the client):

/usr/lib64/nagios/plugins/check_nrpe -H 10.1.34.32

15] You can also check NRPE daemon from the Nagios server(substitute the IP of the Nagios client; this command is to be executed on the server):

/usr/lib64/nagios/plugins/check_nrpe -H 10.1.34.32

16] Make sure the "COMMAND DEFINITIONS" in the /etc/nagios/nrpe.cfg file in the client are in order. They can be found near the end of the file.
17] "service nrpe restart"
18] Edit /etc/nagios/objects/templates.cfg in the Nagios server, and add the following(you may need to make adjustments in order to reconcile the settings described in this step to the /etc/nagios/nrpe.cfg settings in the client):

define host{
name linux-box ; Name of this template
use generic-host ; Inherit default values
check_period 24x7
check_interval 5
retry_interval 1
max_check_attempts 10
check_command check-host-alive
notification_period 24x7
notification_interval 30
notification_options d,r
contact_groups admins
register 0 ; DONT REGISTER THIS - ITS A TEMPLATE
}

19] Add a file to /etc/nagios/servers in the Nagios server(eg: "/etc/nagios/servers/linux-nagios-client.cfg" ; you can use any filename you like, just make sure it has a ".cfg" extension). It should look like this (substitute appropriate values for host_name, alias, and address)

define host{
use linux-box
host_name linux-nagios-client
alias CentOS 6
address 10.1.34.32
}

define service{
use generic-service
host_name linux-nagios-client
service_description Current Load
check_command check_nrpe!check_load
}

define service{
use generic-service
host_name linux-nagios-client
service_description /dev/hda1 Current users
check_command check_nrpe!check_users
}

define service{
use generic-service
host_name linux-nagios-client
service_description Root Partition
check_command check_nrpe!check_hda1
}

define service{
use generic-service
host_name linux-nagios-client
service_description Total Processes
check_command check_nrpe!check_total_procs
}

define service{
use generic-service
host_name linux-nagios-client
service_description Zombie Processes
check_command check_nrpe!check_zombie_procs
}

define service{
use generic-service
host_name linux-nagios-client
service_description SSH
check_command check_nrpe!check_ssh
}

define service{
use generic-service
host_name linux-nagios-client
service_description Swap Usage
check_command check_nrpe!check_swap
}

define service{
use generic-service
host_name linux-nagios-client
service_description Ping
check_command check_ping!100.0,20%!500.0,60%
}

20] Restart Nagios on the Nagios server:

service nagios restart

21] Open http://(IP or hostname of Nagios server)/nagios . Enter the credentials for the nagiosadmin user.

mkdir /nfs-share

8] Do the following:

chkconfig nfs on
chkconfig nfslock on
chkconfig rpcbind on

9] "system-config-firewall-tui"
... and include "NFS4" in trusted services.
10] Make a "/etc/exports" text file with something like this inside (substitute network settings when appropriate):

/nfs-share 10.0.0.0/255.0.0.0(rw,sync,no_root_squash)

11] Append to "/etc/hosts.allow":

mountd: 10.0.0.0/255.0.0.0

12] Append to "/etc/hosts.deny":

portmap:ALL
lockd:ALL
mountd:ALL
rquotad:ALL
statd:ALL

13] Do the following:

service rpcbind restart
service nfs restart
service nfslock restart

To configure a CentOS 6 64-bit client:
1] "yum update"
2] "shutdown -r now"
3] "yum install nfs-utils rpcbind"
4] "vi /etc/sysconfig/selinux" and set "SELINUX=disabled".
5] "setenforce 0"
6] Make a folder to be the mount point. eg:

mkdir /nfs-share

7] Do the following:

chkconfig nfs on
chkconfig nfslock on
chkconfig rpcbind on

8] Do the following:

service rpcbind restart
service nfs restart
service nfslock restart

9] To mount(do this as root):

mount -t nfs4 10.1.34.24:/nfs-share /nfs-share

10] To automatically do the mount during startup, append something like this to "/etc/fstab"(make necessary adjustments for your requirements):

10.1.34.24:/nfs-share /nfs-share nfs4 defaults 1 1

To mount the NFS share from an Ubuntu 10.04.3 client(do this as root):
"mount -t nfs4 10.1.34.24:/nfs-share /nfs-share"
NOTE: substitute the IP of your NFS server for the "10.1.34.24" IP above. Also, the trailing "/nfs-share" will be the mount point of the NFS folder on the client.