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Re: "Got error 4009 'Cluster Failure' from NDB. Could not acquire global schema lock" and "Could not connect to storage engine"
Posted by: Mikael Ronström
Date: October 10, 2017 03:24PM

Great that you let us know how you solved it.

Firewalls is probably the most common issue with setting up
MySQL Cluster. I usually recommend to set ServerPort on the
data nodes. By e.g. setting this to 11860 one needs to open
up port 3306 for MySQL Server port, 1186 for NDB management
server port and 11860 for data node port.

Without setting ServerPort the communication can use any free
port and that is a lot harder to handle with firewalls.

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