Below table will explain what is the cluster and package status (required state) at the time of any cluster configuration change and package configuration change. Hope this will help for system admins.
| Task /
Change in cluster config |
Cluster status
/ Required Cluster State |
| Add a new
node. |
All cluster nodes
must be running. |
| Delete an
existing node |
A node can be deleted
even if it is down or unreachable. |
| Change maximum
configure packages |
Cluster must not be
running |
| Change timing
parameters |
Cluster must not be
running |
| Change cluster
lock configuration |
Cluster must not be
running |
| Change serial
heartbeat configuration |
Cluster must not be
running. |
| Change IP
address for heartbeats |
Cluster must not be
running |
| Change
addresses of monitored subnets |
Cluster must not be
running. |
| Package
Modification |
Package status
/ Package required state |
| Add a new
package |
Other packages can be
running. |
| Remove a
package. |
Package must be
halted. Cluster can be running. |
| Add a new
node. |
Package(s) may be
running. |
| Remove a node. |
Package(s) may be
running on different nodes. |
| Add/remove a
new service process |
Package must be
halted. |
| Add/remove a
new subnet. |
Package
must be halted. / Cluster may need halting if subnet is new to the cluster |
| Add/remove a
new EMS resource |
Package must be
halted. / Cluster may need halting if EMS resource is new to the cluster. |
| Changes to the
run/halt script contents |
Recommended that
package be halted to avoid any timing problems while running the script. |
| Script
timeouts |
Package may be
running. |
| Service
timeouts |
Package must be
halted. |
| Failfast
parameters |
Package must be
halted. |
| Auto_Run |
Package may be
running. |
| Local LAN
failover |
Package may be
running. |
| Change node
adoption order |
Package may be
running. |
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