Mysqltuner
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FAQ
name resolution is active : a reverse name resolution is made for each new connection and can reduce performance
Option skip-name-resolve
Table cache hit rate: 0%
hmm
innodb_log_file_size should be (=16M) if possible, so InnoDB total log files size equals to 25% of buffer pool size
That's current situation, so change log_file_size together with innodb_buffer_pool_size
Attempted to use login credentials from Debian maintenance account, but they failed.
Find the secret mysqltuner config or use
mysqltuner --user root
or
mysqltuner --defaults-file ~/.my.cnf
Attempted to use login credentials from DirectAdmin, but they failed.
Check mysqladmin ping