data node lost connection (err 2305) (1 reply)

Hello

I have a problem with our data nodes that shutdown every once in a while.

Because I don't know how to format here, I'm using pastebin for all log files.

ndbd6 error log:
https://pastebin.com/3SPu6DUp

Trace log 2: (empty)
Trace log 8: has like 165k lines. Do you need it?

ndbd6 out log:
https://pastebin.com/fZ2tXMJZ

ndbd5 out log:
https://pastebin.com/y7u81Ksg

ndb1 cluster log:
https://pastebin.com/q9qrj3Tx

ndb mgm config:
https://pastebin.com/JGygDVhX

The cluster version 7.5.6 is running on WS2012R2 on top of vSpehere.


While googling I mostly found out that it is probably a network thing.. but it feels like it is not a network thing to me?