Unfortunately no, I don't have more logs.
"two instances means" the following:
HazelcastInstance backupCacheInstance = Hazelcast.newHazelcastInstance(hzBackupConfig);
HazelcastInstance mainCacheInstance = Hazelcast.newHazelcastInstance(hzMainConfig);
...
hzConfig.setClusterName(groupName);
hzConfig.getNetworkConfig().setPort(port);
...
hzConfig.getNetworkConfig()
.getJoin()
.getKubernetesConfig()
.setProperty("service-dns", serviceDns)
.setProperty("service-port", port.toString())
...
where
groupName and port are the following:
backupCacheInstance -
groupName = hz_backup,
port = 4446
mainCacheInstance - groupName = hz_main, port = 4445