Details
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Bug
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    Status: Closed (View Workflow)
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Major
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    Resolution: Fixed
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    2.5.5
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    None
 
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        MXS-SPRINT-121
 
Description
A lot of errors are logged after upgrading to 2.5.5 (from 2.3.x)
MariaDB version is 10.3.25
					2020-11-01 16:30:24 error : (511660) Invalid authentication message from backend 'db3'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:30:24 error : (511660) Invalid authentication message from backend 'db2'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:30:25 error : (511660) Invalid authentication message from backend 'db3'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:30:42 error : (512393) Invalid authentication message from backend 'db3'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:30:42 error : (512393) Invalid authentication message from backend 'db2'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:30:43 error : (512393) Invalid authentication message from backend 'db3'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:30:47 error : (512527) Invalid authentication message from backend 'db2'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:30:47 error : (512527) Invalid authentication message from backend 'db3'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:31:02 error : (513425) Invalid authentication message from backend 'db3'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:31:02 error : (513425) Invalid authentication message from backend 'db2'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:31:02 error : (513426) Invalid authentication message from backend 'db3'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:31:02 error : (513429) Invalid authentication message from backend 'db3'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
					2020-11-01 16:31:02 error : (513426) Invalid authentication message from backend 'db2'. Error code: 1047, Msg : #08S01: Unknown command  | 
		
I have virtually no clue why I'm getting these, most connections seem to work fine.