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304 IBM Systems Director Management Console: Introduction and Overview
Running the setup wizard or using CLI commands on the SDMC designated to
be the primary node configures the internal High Availability components on both
the primary and secondary SDMCs. Figure 12-4 shows the SDMC High
Availability configuration sequence that sets up the two SDMCs in an High
Availability cluster.
Figure 12-4 Active/Passive configuration sequence
12.2.1 High availability terminology
Refer to this list of terms to help you better understand high availability concepts:
Node A node is an SDMC that is configured to be part
of a high availability environment.
Active node The active node manages your environment.
Only one node is active at a time.
Passive node The passive node is not currently active. Any
changes you make to the active node are
replicated to the passive node.
Initial configHA config wizard TSA Model config
SSH to second node
Kick off initial config
Retrieve TCP/IP info
Perform sanity check
Configure MQ
Configure DRBD
Sync users, LDAP, Kerberos
Sync DNS, NTP, syslog
Open firewall ports
Configure HA daemons
Preapre nodes
Start Director
Configure Agents
Create TSA model
Stop Director