Turning off un-wanted services on Redhat/CentOS/Fedora

chkconfig atd  off
chkconfig auditd  off
chkconfig avahi-daemon  off
chkconfig bluetooth  off
chkconfig cgconfig  off
chkconfig cgred  off
chkconfig cups  off
chkconfig dc_client  off
chkconfig dc_server  off
chkconfig dnsmasq  off
chkconfig ebtables  off
chkconfig firstboot  off
chkconfig gpsd  off
chkconfig haldaemon  off
chkconfig ip6tables  off
chkconfig iptables   off
chkconfig irda  off
chkconfig iscsi  off
chkconfig iscsid  off
chkconfig ksm  off
chkconfig ksmtuned  off
chkconfig libvirt-guests  off
chkconfig libvirtd  off
chkconfig lvm2-monitor  off
chkconfig mdmonitor  off
chkconfig NetworkManager  off
chkconfig netconsole  off
chkconfig netfs  off
chkconfig nfs  off
chkconfig nfslock  off
chkconfig nmb  off
chkconfig ntpd  off
chkconfig ntpdate  off
chkconfig openct  off
chkconfig openvpn  off
chkconfig pcscd  off
chkconfig portreserve  off
chkconfig psacct  off
chkconfig rdisc  off
chkconfig restorecond  off
chkconfig rpcbind  off
chkconfig rpcgssd  off
chkconfig rpcidmapd  off
chkconfig rpcsvcgssd  off
chkconfig rsyslog  off
chkconfig saslauthd  off
chkconfig sendmail  off
chkconfig smb  off
chkconfig smolt  off
chkconfig snmpd  off
chkconfig speech-dispatcherd  off
chkconfig snmptrapd  off
chkconfig squid  off
chkconfig svnserve  off
chkconfig vboxdrv  off
chkconfig vboxweb-service  off
chkconfig wicd  off
chkconfig wpa_supplicant  off
chkconfig ypbind off

===========================================================

Following services for Apache and Mysql running on the same server.
chkconfig abrtd  on
chkconfig httpd  on
chkconfig network  on
chkconfig mysqld  on
chkconfig sshd  on
chkconfig udev-post  on
chkconfig xinetd on

How to track down a high server load RedHat/CentOS/Fedora/SuSe

Line 1 - General server information - Current time, uptime (since last restart of server), number of users logged on (other than yourself), and the load average for the last 1, 5, and 15 minutes
Line 2 - Tasks - Number of processes, number of actively running processes, sleeping process, stopped process, and zombie processes
Line 3 - CPU usage info (User, System, Nice, Idle, Waiting, Hardware Interrupts, Software Interrupts).  Just worry about Idle, user, system, and waiting.
Line 4 - Memory usage
Line 5 - Swap usage (used should be almost 0 if not 0)
Table header for process list (Process ID, User, Priority, Nice, Virtual Memory, Resident Size, Shared Size, , State, CPU, Memory, CPU Time used, Command)
The processes themselves



login as: root
Access denied
root@192.168.200.102's password:
Last login: Tue Jul  3 02:47:21 2012 from 192.168.200.1

[root@openstack ~]# top -b -i -n 20 >> ./server-load

[root@openstack ~]# cat server-load
top - 00:55:00 up 4 min,  3 users,  load average: 1.84, 1.09, 0.49
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  7.5%us, 20.0%sy,  0.0%ni, 58.7%id,  7.0%wa,  6.1%hi,  0.7%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23112k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203320k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2908 1020  796 R  3.7  0.1   0:00.06 top


top - 00:55:03 up 4 min,  3 users,  load average: 1.84, 1.09, 0.49
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  1.0%us,  8.9%sy,  0.0%ni, 86.8%id,  0.0%wa,  3.0%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23112k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203336k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  0.7  0.1   0:00.08 top


top - 00:55:06 up 4 min,  3 users,  load average: 1.85, 1.10, 0.50
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.7%us,  8.7%sy,  0.0%ni, 84.7%id,  3.3%wa,  2.7%hi,  0.0%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23120k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203328k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  0.7  0.1   0:00.10 top


top - 00:55:09 up 4 min,  3 users,  load average: 1.85, 1.10, 0.50
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.7%us,  9.6%sy,  0.0%ni, 86.0%id,  0.0%wa,  3.3%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23120k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203336k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  0.7  0.1   0:00.12 top


top - 00:55:12 up 4 min,  3 users,  load average: 1.79, 1.10, 0.50
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  2.3%us,  9.9%sy,  0.0%ni, 80.9%id,  3.3%wa,  3.3%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23128k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203328k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  1.0  0.1   0:00.15 top


top - 00:55:15 up 4 min,  3 users,  load average: 1.72, 1.10, 0.50
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.7%us,  9.3%sy,  0.0%ni, 86.0%id,  0.0%wa,  3.7%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23128k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203336k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  0.7  0.1   0:00.17 top


top - 00:55:18 up 4 min,  3 users,  load average: 1.72, 1.10, 0.50
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.7%us,  9.0%sy,  0.0%ni, 86.0%id,  1.0%wa,  3.0%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23136k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203336k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  0.7  0.1   0:00.19 top


top - 00:55:21 up 4 min,  3 users,  load average: 1.66, 1.10, 0.50
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  1.0%us,  8.6%sy,  0.0%ni, 87.1%id,  0.0%wa,  3.0%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23136k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203344k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  1.0  0.1   0:00.22 top


top - 00:55:24 up 4 min,  3 users,  load average: 1.66, 1.10, 0.50
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.7%us,  9.3%sy,  0.0%ni, 85.7%id,  1.0%wa,  3.0%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23144k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203348k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  0.7  0.1   0:00.24 top


top - 00:55:27 up 4 min,  3 users,  load average: 1.61, 1.10, 0.51
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.7%us,  8.6%sy,  0.0%ni, 87.5%id,  0.0%wa,  3.0%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23144k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203348k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  0.7  0.1   0:00.26 top


top - 00:55:30 up 5 min,  3 users,  load average: 1.48, 1.08, 0.50
Tasks: 124 total,   1 running, 123 sleeping,   0 stopped,   0 zombie
Cpu(s):  1.0%us,  8.9%sy,  0.0%ni, 85.5%id,  1.7%wa,  2.6%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488776k used,   539192k free,    23152k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203348k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  1.0  0.1   0:00.29 top


top - 00:55:33 up 5 min,  3 users,  load average: 1.48, 1.08, 0.50
Tasks: 119 total,   1 running, 118 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.3%us,  9.6%sy,  0.0%ni, 86.8%id,  0.0%wa,  3.0%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488744k used,   539224k free,    23152k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203348k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  0.7  0.1   0:00.31 top


top - 00:55:36 up 5 min,  3 users,  load average: 1.44, 1.08, 0.51
Tasks: 120 total,   1 running, 119 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.7%us,  8.7%sy,  0.0%ni, 86.0%id,  1.7%wa,  3.0%hi,  0.0%si,  0.0%st
Mem:   1027968k total,   488744k used,   539224k free,    23160k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203340k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  0.7  0.1   0:00.33 top


top - 00:55:40 up 5 min,  3 users,  load average: 1.44, 1.08, 0.51
Tasks: 120 total,   1 running, 119 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.7%us,  9.6%sy,  0.0%ni, 86.5%id,  0.0%wa,  3.0%hi,  0.3%si,  0.0%st
Mem:   1027968k total,   488744k used,   539224k free,    23160k buffers
Swap:  2064380k total,        0k used,  2064380k free,   203348k cached

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
 1337 root      20   0  2884 1040  812 R  1.0  0.1   0:00.36 top

[root@openstack ~]#

Run you OWNCLOUD on CentOS/REDHAT/FEDORA

1. Install the following packages:    yum -y install httpd php php-mysql php-mbstring php-devel mysql mysql-server zlib zlib-devel pcre-devel phpmyadmin 
2. Download ownCloud3 sources from here
3. Extract and copy the resultant owncloud/ directory to /var/www/html
4. ‘cd’ to /var/www/html and set appropriate permission to owncloud directory so that apache can read/write from/to it: $sudo  chown -R apache:apache owncloud/
5. Start Apache server: $ sudo service httpd start
6. Start MySQL server: $ sudo service mysql start and change the root password using $mysqladmin -u root password PASSWORD
7. Create a MySQL database that you want ownCloud to use by going to: http://localhost/phpmyadmin
8. Start ownCloud: http://localhost/owncloud and setup other users or simply start using for storing files
9. Use PageKite to make your cloud publicly accessible as detailed here

Bandwidth limitation using "TC Command" RedHat /CentOS/Fedora/Ubuntu/SuSe

Use "tc" command.

# tc qdisc add dev eth0 root tbf limit 15Kb buffer 10Kb/8 rate 10Kbps

Check the configuration.

# tc -s qdisc
qdisc tbf 8001: dev eth0 root refcnt 2 rate 80000bit burst 10Kb lat 512.0ms
 Sent 994 bytes 14 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0
qdisc pfifo_fast 0: dev eth1 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1
 Sent 10861 bytes 156 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0
qdisc pfifo_fast 0: dev eth2 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1
 Sent 15932 bytes 100 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0
qdisc pfifo_fast 0: dev eth3 root refcnt 2 bands 3 priomap  1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1
 Sent 1836 bytes 10 pkt (dropped 0, overlimits 0 requeues 0)
 rate 0bit 0pps backlog 0b 0p requeues 0



If you want to delete the configuration, execute the following command.

# tc qdisc del dev eth0 root