[root@ip-172-31-92-30 centos]# cat /etc/my.cnf.d/server.cnf 
#
# These groups are read by MariaDB server.
# Use it for options that only the server (but not clients) should see
#
# See the examples of server my.cnf files in /usr/share/mysql/
#

# this is read by the standalone daemon and embedded servers
[server]

# this is only for the mysqld standalone daemon
[mysqld]
datadir                                         =       /var/lib/mysql
port                                            =       3333
server_id                                       =       3
gtid_domain_id                                  =       202
bind-address                                    =       0.0.0.0
default-storage-engine                          =       innodb
performance_schema                              =       ON
log_slave_updates                               =       ON
wait_timeout                                    =       3000
interactive_timeout                             =       3000
binlog_format                                   =       ROW
log-bin                                         =       mysql-bin-node-2
expire_logs_days                                =       3
log_error                                       =       /var/lib/mysql/error.log


#
# * Galera-related settings
#
[galera]
# Mandatory settings
wsrep_on                                        =       ON
wsrep_gtid_mode                                 =       ON
wsrep_gtid_domain_id                            =       2
wsrep_node_name                                 =       'rnsmdc202'
wsrep_node_address                              =       '172.31.92.30'
wsrep_cluster_name                              =       'rn_stage_cluster'
wsrep_cluster_address                           =       "gcomm://172.31.86.176,172.31.92.30"
wsrep_provider                                  =       /usr/lib64/galera-4/libgalera_smm.so
wsrep_sst_auth                                  =       sst_user:R00t@123
wsrep_sst_method                                =       mariabackup


#wsrep_on=ON
#wsrep_provider=
#wsrep_cluster_address=
#binlog_format=row
#default_storage_engine=InnoDB
#innodb_autoinc_lock_mode=2
#
# Allow server to accept connections on all interfaces.
#
#bind-address=0.0.0.0
#
# Optional setting
#wsrep_slave_threads=1
#innodb_flush_log_at_trx_commit=0

# this is only for embedded server
[embedded]

# This group is only read by MariaDB servers, not by MySQL.
# If you use the same .cnf file for MySQL and MariaDB,
# you can put MariaDB-only options here
[mariadb]