A Troubleshooting - Dell EMC AX4-5I Hardware Installation Manual

Troubleshooting
This appendix provides troubleshooting information for your cluster
configuration.
Table A-1 describes general cluster problems you may encounter and the
probable causes and solutions for each problem.
Table A-1. General Cluster Troubleshooting
Problem
The nodes cannot
access the storage
system, or the cluster
software is not
functioning with the
storage system.
One of the nodes takes a
long time to join the
cluster.
OR
One of the nodes fail to
join the cluster.
Probable Cause
The storage system is
not cabled properly to
the nodes or the
cabling between the
storage components is
incorrect.
One of the cables is
faulty.
LUNs are not assigned
to the hosts.
The node-to-node
network has failed due
to a cabling or
hardware failure.
Long delays in
node-to-node
communications may
be normal.
Corrective Action
Ensure that the cables are
connected properly from the
node to the storage system. For
more information, see "Cabling
Your Cluster for Public and
Private Networks" on page 15.
Replace the faulty cable.
Verify that all LUNs are assigned
to the hosts.
Check the network cabling.
Ensure that the node-to-node
interconnection and the public
network are connected to the
correct NICs.
Verify that the nodes can
communicate with each other
by running the ping command
from each node to the other
node. Try both the host name
and IP address when using the
ping command.
Troubleshooting
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