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MySQL NDB Cluster install on RHEL 7 fails


I am currently trying to install MySQL NDB Cluster 7.6 using Auto-installer on RHEL 7 which currently fails with below error:

Running out of install dir: /opt/mysql/mysqlmedia/bin

Traceback (most recent call last):

  File "./ndb_setup.py", line 38, in <module>

    request_handler.main(mcc_config.install_prefix, mcc_config.abs_install_subdir)

  File "/opt/mysql/mysqlmedia/share/mcc/request_handler.py", line 770, in main

    if is_port_available(options.server_name, port_val):

  File "/opt/mysql/mysqlmedia/share/mcc/util.py", line 87, in is_port_available

    return try_connect(url_host, port, False, _retdict('ECONNREFUSED', True))

  File "/opt/mysql/mysqlmedia/share/mcc/util.py", line 63, in try_connect

    s = socket.create_connection((url_host, port))

  File "/usr/lib64/python2.7/socket.py", line 571, in create_connection

    raise err

socket.error: [Errno 97] Address family not supported by protocol

Would be great if anyone has come across this error before and had resolved it ?

Thank you,