PMP HA error and performance issues

PMP HA error and performance issues

Dear,
 
Since we've upgraded to pmp 6404, we encounter 2 problems :
1/ the HA setup seems to be erratic. Indeed, the HA setup completed successfully however it is shown as "not running" in the admin section. However, stopping the primary server does not prevent from logging in to the secondary.
Nevertheless, an error event log appears

"Slave I/O: error connecting to master 'repl@XXXXXX.XXX.XX:2345' - retry-time: 30 retries: 86400, Error_code: 2003"

" Slave I/O: error connecting to master 'repl@XXXXXX.XXX.XX:2345' - retry-time: 30 retries: 86400, Error_code: 2026"
 
2/ the pmp performance is not so good. Could you please provide me with MySQL fine tuning configuration ?
 
Regards

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