OpenVMS Cluster Systems - OpenVMS Systems - HP

C.1 Diagnosing Computer Failures
C
Cluster Troubleshooting
This appendix contains information to help you perform troubleshooting
operations for the following:
• Failures of computers to boot or to join the cluster
• Cluster hangs
• CLUEXIT bugchecks
• Port device problems
C.1.1 Preliminary Checklist
Before you initiate diagnostic procedures, be sure to verify that these conditions
are met:
• All cluster hardware components are correctly connected and checked for
proper operation.
• When you attempt to add a new or recently repaired CI computer to the
cluster, verify that the CI cables are correctly connected, as described in
Section C.10.5.
• OpenVMS Cluster computers and mass storage devices are configured
according to requirements specified in the OpenVMS Cluster Software
Software Product Description (SPD 29.78.xx).
• When attempting to add a satellite to a cluster, you must verify that the LAN
is configured according to requirements specified in the OpenVMS Cluster
Software SPD. You must also verify that you have correctly configured and
started the network, following the procedures described in Chapter 4.
If, after performing preliminary checks and taking appropriate corrective action,
you find that a computer still fails to boot or to join the cluster, you can follow the
procedures in Sections C.2 through C.4 to attempt recovery.
C.1.2 Sequence of Booting Events
To perform diagnostic and recovery procedures effectively, you must understand
the events that occur when a computer boots and attempts to join the cluster.
This section outlines those events and shows typical messages displayed at the
console.
Note that events vary, depending on whether a computer is the first to boot in
a new cluster or whether it is booting in an active cluster. Note also that some
events (such as loading the cluster database containing the password and group
number) occur only in OpenVMS Cluster systems on a LAN.
Cluster Troubleshooting C–1