Force shutdown to all storage nodes, when the internet connection for one of them is unexpectedly down. Why? (no replies)

Hello,

I need 99,9% uptime for my web application and I think to use MySQL Cluster, but here is the problem.

This is my cluster architecture:

Switch #1
Management node (mgmd) - 192.168.0.203
Storage node + SQL node - 192.168.0.206
Storage node + SQL node - 192.168.0.207

Switch #2
Storage node + SQL node - 192.168.0.209
Storage node + SQL node - 192.168.0.210

Switch #3
Storage node + SQL node - 192.168.0.211

Switch #4
Storage node + SQL node - 192.168.0.71


During my local tests, I isolated two of the machines (192.168.0.209, 192.168.0.210). I unplugged the network cable for Switch #2. So here is the result:

Node 2: Forced node shutdown completed. Caused by error 2305: 'Node lost connection to other nodes and can not form a unpartitioned cluster,
please investigate if there are error(s) on other node(s)(Arbitration error). Temporary error, restart node'.

Node 3: Forced node shutdown completed. Caused by error 2305: 'Node lost connection to other nodes and can not form a unpartitioned cluster,
please investigate if there are error(s) on other node(s)(Arbitration error). Temporary error, restart node'.

and etc. (all nodes are being halted)

This is strange behavior for me. What is happening? There are 4 other storage nodes (+sql nodes) that are being halted, instead to work properly and handle the sql queries...

Is this a configuration issue?


Regards.