When I test mysql cluster’s high availability again, I will directly turn off the host of a data node. After a few seconds of re-querying mysql cluster status, the following error will be reported, and all data nodes and sql nodes will be disconnected. There is no great god know, help answer, thank you.
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’.
The answer has been found, which is caused by management node parameter setting and too little memory in the data node.