HP Insight Cluster Management Utility v7.1 User Guide

9. Install HP Insight CMU on the GUI client workstation. For details, see “Installing HP Insight
CMU on the GUI client workstation” (page 135).
2.4 Installing HP Insight CMU with high availability
If you are not using HP Insight CMU with high availability (HA), skip this section and go to the
instructions on configuring the cluster in “Defining a cluster with HP Insight CMU” (page 32).
A ”classic” HP Insight CMU cluster has a single management server. If that server fails, although
the HP Insight CMU cluster continues to work for customer applications, you lose management
functions such as backup, cloning, booting a compute node, and ssh through the HP Insight CMU
GUI. If the HP Insight CMU cluster uses a private network for management, you also lose connection
to the site network. Installing and configuring HP Insight CMU under the control of HA software
provides redundancy to avoid this HP Insight CMU service degradation. The following figure
describes a “classic” HP Insight CMU cluster connected to two networks: the site network and a
private cluster network where compute nodes are connected. The HP Insight CMU management
server is known by its IP0 address on the site network, and by the IP1 address on the cluster network.
The next figure shows the corresponding configuration where two servers can run HP Insight CMU
software in active or standby mode under control of HA software. Mgt server1 and mgt server 2
are connected to form an HP Insight CMU management cluster. The IP addresses IP0 and IP1 are
attached to the HP Insight CMU management server that is running the HP Insight CMU software
at a given time. The HP Insight CMU management cluster is known on the site network by the
address IP0, and on the compute network by the address IP1. IP0 and IP1 are the only addresses
HP Insight CMU recognizes. If that server fails, then IP0 and IP1 migrate to the other server. The
two servers each have one IP address per network (IP2, IP3, IP4, IP5). The two servers are connected
to shared storage which hosts the HP Insight CMU directory. This configuration is perceived as a
“classic” HP Insight CMU configuration with a single management server by the compute nodes,
and from the user's point of view.
2.4 Installing HP Insight CMU with high availability 23