HP XC System Software Installation Guide Version 3.0

HN Req: Head Node Required Ext Req: External Connection Required
HN Rec: Head Node Recommended Ext Rec: External Connection Recommended
Table F-3 Specific Node-By-Node Output of the Analyze Option
DescriptionColumn Heading
Displays the number of nodes recommended for a particular role based on the number
of nodes in your system.
Recommend
Displays the actual number of nodes assigned with a particular role. Compare this
to the number of nodes shown in the Recommend column to determine how the
current number compares with the HP recommendation. An asterisk (*) in this column
indicates a shortage, indicating that servers may have heavier than optimal workloads.
Assigned
Indicates a role that HP recommends and the current configuration does not have it
assigned.
Role Recommended (Role Rec)
Indicates that the nodes this role is assigned to (if any) do not include the head node.
For example, the management_server role must be located on the head node. If
you do not take action, proper operation of your HP XC system is not guaranteed.
Head Node Required (HN Req)
Indicates a role that HP recommends is advantageous to have on the head node, but
you have removed it or moved it to some other node.
Head Node Recommended (HN Rec)
Indicates that an external network connection is required on the node that has this
role. The term required in this case means that the service will not work if an external
network connection is not also present. For example, network address translation
(NAT) will not work if an external network connection is not present.
External Connection Required (Ext Req)
Indicates that an external network connection is recommended on the node that has
this role.
External Connection Recommended (Ext Rec)
Indicates that HP recommends this role be assigned to a dedicated node with no
other roles.
Exclusivity Recommended (Exc Rec)
This column lists all HP XC roles. The term optional indicates that the role is not part
of the recommended default configuration and assigning it to a node depends upon
the configuration you want.
Role
The letter N in any column indicates a configuration issue that is not incorrect but
could be improved.
N (Note)
The letter W in any column indicates a probable incorrect configuration that will not
result in a uncorrectable state but should be corrected.
W (Warning)
Customizing Service and Client Configurations
The cluster_config utility enables you to add customized services to one or more nodes. The function
of these customized services and where you locate them is entirely up to you and is outside the scope of this
document. Customizing services configuration is intended for expert HP XC users; this feature is typically not
required or intended for the typical HP XC system.
At the main menu of the cluster_config utility, enter the letter P to continue the system configuration
process.
[L]ist Nodes, [M]odify Nodes, [A]nalyze, [H]elp, [P]roceed, [Q]uit: P
The following prompt is displayed:
[S]ervices Config, [P]roceed, [Q]uit:
Do one of the following:
• Enter S to perform customized services configuration on the nodes in your 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 “Using the Services Configuration Commands”
(page 120) for information about each services configuration command.
• Enter P to continue with the system configuration process.
• Enter Q to exit services configuration and go back to the previous menu.
Using the Services Configuration Commands
The way to affect the services configuration of the nodes in your HP XC system is by setting node attributes
in the MySQL database. Node attribute names are an identifier consisting of letters, followed by letters,
120 Using the Configuration Menu