6027-350 [E] Bad "subnets" configuration: primary IP address ipAddress is on a private subnet. Use a public IP address instead.
Explanation
GPFS™ is configured
to allow multiple IP addresses per node (subnets configuration
parameter), but the primary IP address of the node (the one specified
when the cluster was created or when the node was added to the cluster)
was found to be on a private subnet. If multiple IP addresses are
used, the primary address must be a public IP address.
User response
Remove the node from the cluster; then add it back
using a public IP address.