anchor.diff:  log_error                       = /var/log/mysql/error.log
   long_query_time                 = 1
   log_slow_verbosity              = query_plan
  -innodb_buffer_pool_size         = 64M
  +innodb_buffer_pool_size         = 512M
   innodb_flush_log_at_trx_commit  = 1
   innodb_lock_wait_timeout        = 50
   innodb_thread_concurrency       = 48
  
positive.code: #
  [mysqld]
  max_connections                 = 1000
  connect_timeout                 = 5
  wait_timeout                    = 600
  max_allowed_packet              = 64M
  thread_cache_size               = 128
  sort_buffer_size                = 4M
  bulk_insert_buffer_size         = 16M
  tmp_table_size                  = 128M
  max_heap_table_size             = 128M
  query_cache_limit               = 1M
  query_cache_size                = 16M
  myisam_recover                  = BACKUP
  key_buffer_size                 = 16M
  open-files-limit                = 65535
  table_open_cache                = 500
  table_definition_cache          = 500
  myisam_sort_buffer_size         = 512M
  concurrent_insert               = 2
  
negative.code: # and wsrep_sst_xtrabackup take only one configuration file and use the last one
  # (/etc/mysql/my.cnf is not used)
  datadir                         = /var/lib/mysql
  tmpdir                          = /dev/shm
  innodb_flush_method             = O_DIRECT
  innodb_log_buffer_size          = 32M
  innodb_log_file_size            = 256M
  