HP XC System Software Administration Guide Version 2.1

Starting Up and Shutting Down the HP XC

System

This chapter describes the procedures

for starting up and sh utting down an HP XC system:

• StartinguptheHPXCsystem(Section2.1)

• Shutting down the HP XC system (Section 2.2)

• Shutting down individual nodes (Sec

tion 2.3)

• Managing node power (Section 2.4)

• Disabling and enabling nodes (Section 2.5)

2.1 Starting Up the HP XC System

The startsys command imp lem e nts s ystem startup by specifying the sequencing of nodes

essential for the system to function.

The following procedure describes the steps necessary to start the HP XC system from the

head node.

1. Log in as superuser (root) on the head node.

2. Start all nodes on the system with the startsys command:

# startsys

_________________________ Note _________________________

Nodes that are disabled either as a result of a critical service configuration failure or

with the setnode --disable command cannot be started with the startsys

command until they are enabled with the setnode --enable command.

You can start up only specified nodes by specifying them in a nodelist parameter. The

following example starts up nodes n2, n3,andn5:

# startsys n[2-3,5]

The --max_at_once=n optio n enables you to limit the num b er of nodes that you tu rn on at a

time, decreasing the power surge.

See the startsys(8) manpage for additional informa tion about th is com mand.

2.2 Shutting Down the HP XC System

The stopsys command implem ents the actions to be taken to shut down the system.

The following procedure describes the steps necessary to shut down the HP XC system:

1. Log into any node as superuser.

Logging into the head node is the preferred node for shutting down the system.

2. Enter the stopsys command to shut down the HP XC system. If necessary, you can

specify a d elay (in minutes) with the --delay optio n:

# stopsys --delay 5

Starting Up and Shutting Down the HP XC System 2-1