Managing HP Serviceguard A.11.20.10 for Linux, December 2012
7.2.2 Adding Previously Configured Nodes to a Running Cluster............................................204
7.2.3 Removing Nodes from Participation in a Running Cluster...............................................204
7.2.3.1 Using Serviceguard Commands to Remove a Node from Participation in a Running
Cluster ......................................................................................................................204
7.2.4 Halting the Entire Cluster .........................................................................................204
7.2.5 Automatically Restarting the Cluster ...........................................................................205
7.3 Halting a Node or the Cluster while Keeping Packages Running............................................205
7.3.1 What You Can Do...................................................................................................205
7.3.2 Rules and Restrictions...............................................................................................205
7.3.3 Additional Points To Note.........................................................................................207
7.3.4 Halting a Node and Detaching its Packages...............................................................207
7.3.5 Halting a Detached Package.....................................................................................208
7.3.6 Halting the Cluster and Detaching its Packages............................................................208
7.3.7 Example: Halting the Cluster for Maintenance on the Heartbeat Subnets.........................208
7.4 Managing Packages and Services ....................................................................................209
7.4.1 Starting a Package ..................................................................................................209
7.4.1.1 Starting a Package that Has Dependencies...........................................................209
7.4.2 Halting a Package ..................................................................................................209
7.4.2.1 Halting a Package that Has Dependencies...........................................................210
7.4.2.2 Handling Failures During Package Halt...............................................................210
7.4.3 Moving a Failover Package ......................................................................................211
7.4.4 Changing Package Switching Behavior ......................................................................211
7.5 Maintaining a Package: Maintenance Mode......................................................................212
7.5.1 Characteristics of a Package Running in Maintenance Mode or Partial-Startup Maintenance
Mode ............................................................................................................................212
7.5.1.1 Rules for a Package in Maintenance Mode or Partial-Startup Maintenance Mode ......213
7.5.1.1.1 Additional Rules for Partial-Startup Maintenance Mode....................................214
7.5.1.2 Dependency Rules for a Package in Maintenance Mode or Partial-Startup Maintenance
Mode .......................................................................................................................214
7.5.2 Performing Maintenance Using Maintenance Mode.....................................................214
7.5.2.1 Procedure........................................................................................................215
7.5.3 Performing Maintenance Using Partial-Startup Maintenance Mode.................................215
7.5.3.1 Procedure........................................................................................................215
7.5.3.2 Excluding Modules in Partial-Startup Maintenance Mode.......................................216
7.6 Reconfiguring a Cluster....................................................................................................216
7.6.1 Previewing the Effect of Cluster Changes.....................................................................217
7.6.1.1 What You Can Preview......................................................................................217
7.6.1.2 Using Preview mode for Commands in Serviceguard Manager...............................217
7.6.1.3 Using cmeval...................................................................................................218
7.6.2 Reconfiguring a Halted Cluster .................................................................................219
7.6.3 Reconfiguring a Running Cluster................................................................................219
7.6.3.1 Adding Nodes to the Configuration While the Cluster is Running ...........................220
7.6.3.2 Removing Nodes from the Cluster while the Cluster Is Running ..............................220
7.6.4 Changing the Cluster Networking Configuration while the Cluster Is Running...................221
7.6.4.1 What You Can Do............................................................................................221
7.6.4.2 What You Must Keep in Mind...........................................................................221
7.6.4.3 Example: Adding a Heartbeat LAN....................................................................222
7.6.4.4 Example: Deleting a Subnet Used by a Package..................................................223
7.6.5 Updating the Cluster Lock LUN Configuration Online....................................................224
7.6.6 Changing MAX_CONFIGURED_PACKAGES...............................................................224
7.7 Configuring a Legacy Package..........................................................................................225
7.7.1 Creating the Legacy Package Configuration ................................................................225
7.7.1.1 Using Serviceguard Manager to Configure a Package ...........................................225
7.7.1.2 Using Serviceguard Commands to Configure a Package ........................................225
7.7.1.2.1 Configuring a Package in Stages..................................................................225
10 Contents