Managing HP Serviceguard for Linux, Tenth Edition, September 2012

Reconfiguring a Halted Cluster .........................................................................264
Reconfiguring a Running Cluster........................................................................265
Adding Nodes to the Configuration While the Cluster is Running .....................265
Removing Nodes from the Cluster while the Cluster Is Running .........................266
Changing the Cluster Networking Configuration while the Cluster Is Running...........267
What You Can Do......................................................................................267
What You Must Keep in Mind.......................................................................267
Example: Adding a Heartbeat LAN...............................................................268
Example: Deleting a Subnet Used by a Package.............................................270
Updating the Cluster Lock LUN Configuration Online............................................270
Changing MAX_CONFIGURED_PACKAGES.......................................................271
Configuring a Legacy Package...............................................................................271
Creating the Legacy Package Configuration .......................................................272
Using Serviceguard Manager to Configure a Package ....................................272
Using Serviceguard Commands to Configure a Package .................................272
Configuring a Package in Stages..............................................................272
Editing the Package Configuration File......................................................273
Creating the Package Control Script...................................................................274
Customizing the Package Control Script ........................................................275
Adding Customer Defined Functions to the Package Control Script ....................276
Adding Serviceguard Commands in Customer Defined Functions .................276
Support for Additional Products....................................................................277
Verifying the Package Configuration...................................................................277
Distributing the Configuration............................................................................278
Distributing the Configuration And Control Script with Serviceguard Manager.....278
Copying Package Control Scripts with Linux commands....................................278
Distributing the Binary Cluster Configuration File with Linux Commands .............278
Configuring Cross-Subnet Failover......................................................................279
Configuring node_name..............................................................................279
Configuring monitored_subnet_access...........................................................279
Creating Subnet-Specific Package Control Scripts............................................279
Control-script entries for nodeA and nodeB................................................280
Control-script entries for nodeC and nodeD................................................280
Reconfiguring a Package.......................................................................................280
Migrating a Legacy Package to a Modular Package.............................................281
Reconfiguring a Package on a Running Cluster ...................................................281
Reconfiguring a Package on a Halted Cluster .....................................................282
Adding a Package to a Running Cluster..............................................................282
Deleting a Package from a Running Cluster ........................................................282
Resetting the Service Restart Counter..................................................................283
Allowable Package States During Reconfiguration ...............................................283
Changes that Will Trigger Warnings.............................................................287
Responding to Cluster Events .................................................................................287
Single-Node Operation ........................................................................................287
12 Contents