HP XC System Software Installation Guide Version 3.2

Do one of the following:
• Enter the letter s to perform customized services configuration on the nodes in the system.
This option is intended for experienced HP XC administrators who want to customize service
servers and clients. Intervention like this is typically not required for HP XC systems. See
“Services Configuration Commands” (page 220) for information about each services
configuration command.
• Enter the letter p to continue with the system configuration process.
• Enter the letter q to exit services configuration and return to the previous menu.
G.7.1 Services Configuration Commands
The way to affect the services configuration of the nodes in the HP XC system is by setting node
attributes in the configuration and management database. Node attribute names are an identifier
consisting of letters, followed by letters, digits, periods, and underscores, up to a maximum of
64 characters. The services configuration option of the cluster_config utility provides an
interface that enables you to manipulate node attributes in the database.
Individual nodes can be disabled as servers or disabled as clients of specific services. You must
create a node attribute before you can add it to a node.
The following services configuration commands are available:
[S]ervices Config, [P]roceed, [Q]uit: s
Commands are:
[l]ist - List by attribute
[n]odes - List by node
[c]reate attr - Create new attribute
[d]estroy attr - Destroy existing attribute
[a]dd attr node(s) - Add attribute to node(s)
[r]emove attr node(s) - Remove attribute from node(s)
[w]ipe - Remove/destroy all attributes
[s]ervices - List service assignments
[h]elp - Show help
[b]ack - End services config, return to cluster_config
Examples:
create na_disable_server.cmf
add na_disable_server.cmf n1 n4
remove na_disable_client.supermond n3
destroy na_disable_client.supermond
svcs>
Command Syntax
The following list contains examples of command syntax:
• Create a node attribute (na) to disable a node or nodes as a server of the named service:
svcs> create na_disable_server.service_name
• Create a node attribute to disable a node or nodes as a client of the named service:
svcs> create na_disable_client.service_name
Example: Disable a Server from Serving a Service
To disable node n3 as a server of the cmf service, add the node attribute
na_disable_server.cmf to node n3. This is how you could remove one of several nodes
from the list of cmf servers if you wanted that specific node not to serve that service, even though
it was configured to do so by default.
Example: Disable a Client
Similarly, to disable node n1 as a client of the supermond service, enter the node attribute
na_disable_client.supermond to the affected node. In this instance, it is not the server but
a client of the service that is affected.
220 Using the cluster_config Command-Line Menu