Dell PowerEdge C6105 User Manual download pdf (Page 21)

Data Center Solutions

Command Line Tools: pdsh

pdsh (parallel distributed shell): http://sourceforge.net/projects/pdsh/

Run a task (including fanout) in parallel across many hosts. Here is a crash course:

• Build pdsh

./configure --without-rsh --with-ssh

make

make install

# Put this in your .bash-profile:

export PDSH_RCMD_TYPE=ssh

• Set up SSH keys

# Create SSH key pair & copy to remote host. “No passphrase” is most convenient.

ssh-keygen -t dsa

• Create file “cluster” with list of hosts (1 per line)

# cat ./cluster

192.168.8.150

192.168.8.152

• Use it!

# pdsh -w^cluster df

192.168.8.150: Filesystem 1K-blocks Used Available Use% Mounted on

192.168.8.150: /dev/ram0 2015824 1280376 735448 64% /

192.168.8.150: tmpfs 6145172 0 6145172 0% /dev/shm

192.168.8.152: Filesystem 1K-blocks Used Available Use% Mounted on

192.168.8.152: /dev/mapper/VolGroup00-LogVol00

192.168.8.152: 459081360 11901756 423483428 3% /

192.168.8.152: /dev/sda1 101086 12541 83326 14% /boot

192.168.8.152: tmpfs 6145140 0 6145140 0% /dev/shm

• Decent summary can be found at: http://www.grid5000.fr/mediawiki/index.php/PDSH

http://PowerEdgeC.com

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Dell PowerEdge C6105 User Manual Page 21