CGL Announcements: October 2007

Wednesday, October 31, 2007

gf3 reboot issues

Gf3's network interface does not get started properly on reboot, so this had to be done manually today. This also requires manually mounting NFS directories and manually restarting sshd.

Should find a fix for this.

Grids Network Issues

Grids has been bogging down with excessive ssh and httpd connections, so I temporarily shutdown both of these to clean out the connections. I also killed all of the sshd connections (most of which should not have been kept alive).

I also changed a few parameters in the Apache httpd.conf file to make connections time out more quickly (from 5 hours to 5 minutes). This should not affect anyone unless you are, for example, downloading a large PDF file over a very slow connection from the lab publication list.

Wednesday, October 24, 2007

[Fwd: Lab presentation at 3:30pm Friday]

Presenter: Ahmet Sayar
Topic : High Performance Federated Service-Oriented Geographic Information Systems
Location : 100B, The Large Conference Room on the first floor
Date : Friday, Octobor 26
Time: 3:30 pm

Thursday, October 18, 2007

Backed Up Directories of Lab Servers

The following directories are backed up using rsynch to the SAN drive in room 222:

grids

/grids/c2/www/htdocs
/var/mail
/grids/c2/webcontent

/usr/local/apache
/opt/lampp
/var/lib/mysql

ripvanwinkle

/export/home

/home

gf12

/globalhome

Accounts on GridFarm Machines

Various pieces of random information

The machines gf1-gf8 and gf12-gf19 have separate account systems and separate file systems for performance reasons.
Gf8 and gf12 are the head nodes. Update account information here.
To get machine info, look at the files /proc/cpuinfo, /proc/meminfo, etc.
To get the specific version of linux, look at /etc/redhat-release.
Java, SVN, and several other useful things are installed on /globalhome/globalbin on gf12-gf19. To add these to your path en masse, use the command (or add .bashrc)

export PATH=`echo \`find /globalhome/globalbin/ -name bin\`|tr ' ' ':'`:$PATH

If you need MySQL installed, you can do this yourself. See the second part of the notes at http://communitygrids.blogspot.com/2006/04/installing-second-mysql.html. Use a port other than 3306 (the standard mysql). Use telnet or nestat -a to make sure the port you want to use is available.

Sunday, October 7, 2007