Case: What is the quota allocation assigned to users within a cluster?

show who has logged in (also shows who is currently logged in)

• last

Shows who is logged in

• w

show quota netid

• where netid is accountID

showall repquota -a

edit edquota netid

• file (read in vi)
• in kilobytes

Case: Turning off compute nodes

ssh to the compute node, then:

• halt -p now

Note: Check jobs aren't running on a compute node by first going to the head node:

• q or pestat (see below)

iptables

Resource John (Brightworks) recommends:

• http://aulacero21.xtrweb.com/wordpress/wp-content/uploads/2013/12/IPTablesFlowChart.jpg

Basic Linux commands

• exit (exit session)
• top (activity, live)
• q, or qq (list nodes and their status; reverset)
• pestat (node listing of every node with lots of info)
• psbnodes -ln (list of down nodes)
• qstatus -f (status of nodes, with details. Just nodes with queued jobs?)
• ifconfig (show network info)

Version info

• cat /etc/issue
• cat /proc/version