HP XC System Software Installation Guide Version 3.2.1

If you add the management_hub role to nodes in the system, HP recommends that you also
add the console_network role as well. If the console_network role is not on a
management_hub node, the hub picks a node that is assigned with the console_network
role. See “Console_network Role” (page 202) for more information.
F.3.11 Management Server Role
The management_server role contains services that manage the overall management
infrastructure. Only one node in the system can have the management_server role; in this
release, the head node has this role.
To achieve improved availability of the Nagios master service, you must assign the
management_server role to two nodes (the head node and one additional node). See the role
assignment guidelines listed in Table 1-2 (page 30) for more information.
The configuration and management database names of the services provided by this role are as
follows:
• Apache web server (httpd)
• Nagios aggregator (nagios)
• Nagios service (nsca)
F.3.12 NIS Server Role
The nis_server role is not enabled by default. Assigning this role to a node configures the
node as a NIS slave server. If you assign this role to a node, you are prompted to enter the name
of the NIS master server and NIS domain name during cluster_config processing.
Any node assigned with the nis_server role must also have an external Ethernet network
connection defined.
nis is the configuration and management database of the service provided by this role.
F.3.13 Node Management Role
Nodes with the node_management role run a number of services that help manage other nodes
in the system. This role is restricted to the head node; it cannot be removed.
The configuration and management database names of the services provided by this role are as
follows:
• Console management facility master (cmf)
• Database server (dbserver)
• Dynamic Host Control Protocol (DHCP) server (dhcp)
• HPTC file system server (hptc_cluster_fs)
• License manager (hptc-lm)
• InfiniBand switch monitor (ibmon)
• Image server (imageserver)
• HP MPI interconnect setup (mpiic)
• Myrinet switch monitor (gmmon)
• NFS server (nfs_server)
• Network time protocol (ntp)
• Power daemon server (pwrmgmtserver)
• Quadrics switch monitor (swmlogger)
The configuration and management database, in which all management configuration information
is stored, runs on a node with this role.
The power manager service manages the powering on and off of nodes in the system.
The MPI interconnect settings are managed by nodes running this role.
The image server service provides images from the SystemImager tool to all client nodes.
The NTP server synchronizes the time on all nodes.
204 Description of Node Roles, Services, and the Default Configuration