Unable to see the mysql database after Initialization

[giriprasad kandregula]

Below are the steps i did to create SQL Node in a NDB cluster. Unable to see mysql and ndbinfo databases. Please let me know how to debug this issue.

$sudo /opt/mysql/server-5.7/bin/mysqld --initialize --user=mysql --datadir=/data/mysql
$ sudo systemctl start mysqld
$ mysql -u root
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
$ sudo /opt/mysql/server-5.7/bin/mysqld_safe --skip-grant-tables &
$ mysql -u root
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 6
Server version: 5.7.17-ndb-7.5.5-cluster-gpl MySQL Cluster Community Server (GPL)

mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
+--------------------+
1 row in set (0.01 sec)