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MySQL Cluster Multi Computer Installation

    
Each MySQL Cluster host computer running an SQL node must have
installed on it a MySQL binary. For management nodes and data
nodes, it is not necessary to install the MySQL server binary, but
management nodes require the management server daemon
......

How to change max_allowed_packet value in mysql?

 
If you set it in the cnf(it may be my.ini file) you will likely need to restart the server. Optionally, that is a dynamic variable and can be SET GLOBAL or SET SESSION from the command line as well.So just do as follows.
 
mysql>show variables like’max_allowed_packet’; ......
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