Eriekeberg at 17:39, 23 July 2019

2019-07-23T17:39:10Z

← Older revision		Revision as of 17:39, 23 July 2019
Line 11:		Line 11:

	= Operating System =		= Operating System =
	The cluster currently runs Debian 7.0 ''amd64''. The recommended method of installing the base operating system is to download the ''Small CD'' ISO from [http://www.debian.org/distrib/netinst Debian] and burn it to a CD/DVD.		The cluster currently runs Debian 8.0 ''amd64''. The recommended method of installing the base operating system is to download the ''Small CD'' ISO from [http://www.debian.org/distrib/netinst Debian] and burn it to a CD/DVD.

	The (MBR) partitioning of the main 1TB disk should be:		The (MBR) partitioning of the main 1TB disk should be:

MediaWiki default at 16:05, 31 October 2014

2014-10-31T16:05:12Z

@@ Line 144: / Line 144: @@
   install -v -m 600 -o root -g root /mnt/flash/admin-tools/linux/cluster/var/lib/samba/passdb.tdb /var/lib/samba/
   service samba restart
 === MySQL ===

Wiki Administrator: /* DHCP */

2013-10-22T00:23:56Z

DHCP

← Older revision		Revision as of 00:23, 22 October 2013
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	* isc-dhcp-server		* isc-dhcp-server
			* bridge-utils
			* dnsmasq

	Install the configuration files for the DHCP server:		Install the configuration files for the DHCP server:
Line 213:		Line 215:
	ifup eth1		ifup eth1
	service isc-dhcp-server restart		service isc-dhcp-server restart

	~~Install the following package using ''apt-get'':~~

	* bridge-utils

	Run the following commands:		Run the following commands:

Wiki Administrator: /* DHCP */

2013-10-21T23:29:31Z

DHCP

@@ Line 213: / Line 213: @@
   ifup eth1
   service isc-dhcp-server restart
 === Octave ===

Wiki Administrator at 14:35, 4 October 2013

2013-10-04T14:35:50Z

← Older revision		Revision as of 14:35, 4 October 2013
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	== Third-party Software ==		== Third-party Software ==
	FIXME		FIXME

			[[Category:Sysadmin]]

Wiki Administrator: Created page with "= Hardware = The cluster was built from parts ordered from [http://www.newegg.com Newegg]. The important components of the system are as follows: * '''PSU:''' ''(1x)'' Corsai..."

2013-10-04T14:35:31Z

Created page with "= Hardware = The cluster was built from parts ordered from [http://www.newegg.com Newegg]. The important components of the system are as follows: * '''PSU:''' ''(1x)'' Corsai..."

New page

= Hardware =
The cluster was built from parts ordered from [http://www.newegg.com Newegg]. The important components of the system are as follows:

* '''PSU:''' ''(1x)'' Corsair RM850 850W 92% Efficiency Active-PFC
* '''Mobo:''' ''(1x)'' Gigabyte GA-EP45-UD3P (rev 1.1)
* '''CPU:''' ''(1x)'' Intel Core 2 Quad Q8300 2.5GHz
* '''RAM:''' ''(4x)'' Corsair XMS2 DDR2 800 (PC2 6400) 2GB
* '''Gfx:''' ''(1x)'' NVIDIA GeForce 9500 GT PCI-E 2.0 x8
* '''RAID:''' ''(1x)'' 3ware 9650SE-4LMPL PCI-E 2.0 x1
* '''RAID:''' ''(4x)'' WD 1TB 7200RPM SATA-II HDD

= Operating System =
The cluster currently runs Debian 7.0 ''amd64''. The recommended method of installing the base operating system is to download the ''Small CD'' ISO from [http://www.debian.org/distrib/netinst Debian] and burn it to a CD/DVD.

The (MBR) partitioning of the main 1TB disk should be:

{|
| Num. || Size || Filesystem || Mount point
|-
| 1 || 256 MB || ext2 || /boot
|-
| 2 || 317 GB || ext4 || /
|-
| 3 || 2.5 GB || swap || swap
|}

The 2.7TB RAID5 array should ''already be partitioned'' (GPT). '''At all costs, maintain the integrity of the data already contained on the RAID5 array.''' Keep frequent backups of the array to at least one external source.

Other important settings to choose during the installation are summarized below:
FIXME

= Software =
The software on the cluster consists of packages installed through the Debian repositories and third-party software installed into '''/opt'''. It is highly recommended that the software in this section be installed in the order it is listed here, if possible.

== Debian Packages ==
Install Debian packages before third-party software, if at all possible. Many of these commands will require mounting the administrator flash drive, in which case this documentation assumes it will be mounted to '''/mnt/flash'''.

=== Initial configuration ===
We don't want all the ports on our precious cluster to be out there flapping in the breeze. Install some files that loosely restrict which daemons can provide services to which addresses:

install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/hosts.allow /etc/
install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/hosts.deny /etc/

Install a file that defines WAN and LAN IP-hostname mappings:

install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/hosts /etc/

Add support for hosting both 32-bit and 64-bit packages on this 64-bit system:

dpkg --add-architecture i386
apt-get update

Now install the the following packages using ''apt-get'':

* libc6-i686
* libx11-6:i386
* libxext6:i386

=== The groundwork ===
Some miscellaneous software packages need to be installed as boilerplate. Install the following packages using ''apt-get''...

First, install some required shells:

* tcsh
* bash-completion

Lay down a decent text editor:

* vim

Add a few extra utilities:

* zip
* nmap
* links
* rsync
* screen
* gnuplot
* imagemagick

Now install some more language support:

* pkg-config
* build-essential
* libtool
* texlive
* texi2html
* ruby
* gfortran
* perl

=== Python ===
A few Python packages are standard fare for programmers in the group. Install the following packages using ''apt-get'':

* python3
* python2.7
* python3.2
* python-numpy
* python-sklearn
* python-matplotlib

=== R ===
The R language is useful to some people, I guess.

* r-base
* r-recommended

=== Sudo ===
Install the ''sudo'' package using ''apt-get''. Then add the following line to the '''/etc/sudoers''' file:

%bionmr ALL=(ALL:ALL) ALL

=== OpenSSH ===
The OpenSSH daemon allows users to log into the cluster from anywhere in the world using their RSA private key. First, install the following packages using ''apt-get'':

* openssh-client
* openssh-server

Then install the '''/etc/ssh/sshd_config''' file from the administrator flash drive and restart the SSH daemon:

install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/ssh/sshd_config /etc/ssh/
service ssh restart

=== NFS ===
The NFS server allows users to access their files on campus from Debian Linux workstations. First, install the following packages using ''apt-get'':

* nfs-kernel-server
* portmap

Then install the '''/etc/exports''' file from the administrator flash drive and restart the NFS daemon:

install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/exports /etc/
service nfs-kernel-server restart

=== Samba ===
The Samba server allows users to access their files on campus from Windows workstations. First, install the following packages using ''apt-get'':

* cifs-utils
* samba

Then install the Samba configuration and password files and restart the Samba daemon:

install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/samba/smb.conf /etc/samba/
install -v -m 600 -o root -g root /mnt/flash/admin-tools/linux/cluster/var/lib/samba/passdb.tdb /var/lib/samba/
service samba restart

=== MySQL ===
FIXME

* mysql-client
* mysql-server

=== Apache ===
The Apache server hosts the group website, plain and simple. Install the following packages using ''apt-get'':

* apache2
* apache2-doc

Then install the password file and an updated site configuration file and restart the Apache daemon:

install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/apache2/htpasswd /etc/apache2/
install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/apache2/sites-available/default /etc/apache2/sites-available
service apache2 restart

=== PHP ===
The PHP interpreter is required to host the website using the UNL university style templates. Install the following packages using ''apt-get'':

* php5
* php5-mysql
* php5-sqlite
* libapache-mod-php5

Then download and install Pyrus (PEAR2) using the following commands:

wget http://pear2.php.net/pyrus.phar
install -v -m 644 -o root -g root pyrus.phar /usr/bin/
rm pyrus.phar

Open a new file in ''vi'' called '''/usr/bin/pyrus''' and add the following text:

#!/bin/bash
/usr/bin/php -dphar.readonly=0 /usr/bin/pyrus.phar $*

Save the file and make it executable:

chmod 755 /usr/bin/pyrus

Now run ''pyrus'' for the first time. Tell it ''yes'' to initialize the configuration. Tell it to install packages to '''/usr/share/pear''' by default, when it asks. Now install the UNL template package:

pyrus channel-discover pear.unl.edu
pyrus install -o pear.unl.edu/UNL_Templates-beta

Finally, install updated configuration files for PHP, restart the Apache server and remove the placeholder html page:

install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/php5/apache2/php.ini /etc/php5/apache2/
install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/php5/cli/php.ini /etc/php5/cli/
service apache2 restart
rm /var/www/index.html

=== DHCP ===
The cluster LAN is managed by a DHCP server on the second Ethernet port. Install the following package using ''apt-get'':

* isc-dhcp-server

Install the configuration files for the DHCP server:

install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/dhcp/dhcpd.conf /etc/dhcp/
install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/default/isc-dhcp-server /etc/default/
install -v -m 644 -o root -g root /mnt/flash/admin-tools/linux/cluster/etc/network/interfaces /etc/network/

Bring up the second Ethernet interface and restart the DHCP server:

ifup eth1
service isc-dhcp-server restart

=== Octave ===
The Octave programming environment provides users with mathematical routines that simplify data handling. Install the following packages using ''apt-get'':

* octave
* liboctave-dev
* octave-audio
* octave-control
* octave-data-smoothing
* octave-fixed
* octave-fpl
* octave-general
* octave-geometry
* octave-image
* octave-io
* octave-linear-algebra
* octave-odepkg
* octave-optim
* octave-optiminterp
* octave-pkg-dev
* octave-plot
* octave-quaternion
* octave-signal
* octave-specfun
* octave-statistics
* octave-strings

== Third-party Software ==
FIXME

Cluster Maintenance - Revision history

Eriekeberg at 17:39, 23 July 2019

MediaWiki default at 16:05, 31 October 2014

Wiki Administrator: /* DHCP */

Wiki Administrator: /* DHCP */

Wiki Administrator at 14:35, 4 October 2013

Wiki Administrator: Created page with "= Hardware = The cluster was built from parts ordered from [http://www.newegg.com Newegg]. The important components of the system are as follows: * '''PSU:''' ''(1x)'' Corsai..."