apiVersion: v1
kind: ConfigMap
metadata:
  name: mariadb-tuning
data:
  tuning.cnf: |+
    [mysqld]
    user=mysql
    max_allowed_packet=256M
    open_files_limit=10240
    max_connections=8192
    max-connect-errors=1000000

    ## Generally, it is unwise to set the query cache to be larger than 64-128M
    ## as the costs associated with maintaining the cache outweigh the performance
    ## gains.
    ## The query cache is a well known bottleneck that can be seen even when
    ## concurrency is moderate. The best option is to disable it from day 1
    ## by setting query_cache_size=0 (now the default on MySQL 5.6)
    ## and to use other ways to speed up read queries: good indexing, adding
    ## replicas to spread the read load or using an external cache.
    query_cache_size =0
    query_cache_type=0

    sync_binlog=0
    thread_cache_size=16
    table_open_cache=2048
    table_definition_cache=1024

    #
    # InnoDB
    #
    # The buffer pool is where data and indexes are cached: having it as large as possible
    # will ensure you use memory and not disks for most read operations.
    # Typical values are 50..75% of available RAM.
    # TODO(tomasz.paszkowski): This needs to by dynamic based on avaliable RAM.
    innodb_buffer_pool_size=4096M
    innodb_log_file_size=2000M
    innodb_flush_method=O_DIRECT
    innodb_flush_log_at_trx_commit=2
    innodb_old_blocks_time=1000
    innodb_autoinc_lock_mode=2
    innodb_doublewrite=0
    innodb_file_format=Barracuda
    innodb_file_per_table=1
    innodb_io_capacity=500
    innodb_locks_unsafe_for_binlog=1
    innodb_read_io_threads=8
    innodb_write_io_threads=8


    [mysqldump]
    max-allowed-packet=16M