gtid_mode = ON
enforce_gtid_consistency = ON
master_info_repository = TABLE
relay_log_info_repository = TABLE
binlog_checksum = NONE
log_slave_updates = ON
log_bin = binlog
binlog_format = ROW
transaction_write_set_extraction = XXHASH64
loose-group_replication_bootstrap_group = OFF
loose-group_replication_start_on_boot = OFF
loose-group_replication_ssl_mode = REQUIRED
loose-group_replication_recovery_use_ssl = 1

loose-group_replication_group_name = "0b5a7b61-0f20-11e9-a19d-0a07508028fc"
loose-group_replication_ip_whitelist = "private_and_public_ip_list_here"
loose-group_replication_group_seeds = "same_as_above_but_with_ports"

port=3309
server_id = 4
bind-address = "172.xx.xx.xxx"  <-- private ip address. if using public ip then mysql service wont start
report_host = "54.xx.xx.xxx"
loose-group_replication_local_address = "54.xx.xx.xxx:33091"