I'm in the process of upgrading a redundant pair of gateways. The backup upgraded fine, no issues.
Trying to upgrade the master now and getting the following error:
FAILURE: Upgrade failed. A rollback will now be attempted using backed up folders. Error=GATEWAY_START_ERROR: Gateway JVM could not be started Rollback to pre-upgrade state is complete.|
I update our 2 gateways couple of days ago (same your configuration) without problem but actually I update the master first and then the backup following these instruction