# Copyright 2017 The Openstack-Helm Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

[mysqld]
# Charset
character_set_server=utf8
collation_server=utf8_unicode_ci
skip-character-set-client-handshake

# Logging
slow_query_log=on
slow_query_log_file=/var/log/mysql/mariadb-slow.log
log_warnings=2

# General logging has huge performance penalty therefore is disabled by default
general_log=off
general_log_file=/var/log/mysql/mariadb-error.log

long_query_time=3
log_queries_not_using_indexes=on

# Networking
bind_address=0.0.0.0
port={{ tuple "oslo_db" "internal" "mysql" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}

# When a client connects, the server will perform hostname resolution,
# and when DNS is slow, establishing the connection will become slow as well.
# It is therefore recommended to start the server with skip-name-resolve to
# disable all DNS lookups. The only limitation is that the GRANT statements
# must then use IP addresses only.
skip_name_resolve

# Tuning
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=1024M
innodb_doublewrite=0
innodb_file_format=Barracuda
innodb_file_per_table=1
innodb_flush_method=O_DIRECT
innodb_io_capacity=500
innodb_locks_unsafe_for_binlog=1
innodb_log_file_size=128M
innodb_old_blocks_time=1000
innodb_read_io_threads=8
innodb_write_io_threads=8

# Clustering
binlog_format=ROW
default-storage-engine=InnoDB
innodb_autoinc_lock_mode=2
innodb_flush_log_at_trx_commit=2
wsrep_cluster_name={{ tuple "oslo_db" "internal" . | include "helm-toolkit.endpoints.hostname_short_endpoint_lookup" }}
wsrep_on=1
wsrep_provider=/usr/lib/galera/libgalera_smm.so
wsrep_provider_options="gmcast.listen_addr=tcp://0.0.0.0:{{ tuple "oslo_db" "internal" "wsrep" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}"
wsrep_slave_threads=12
wsrep_sst_auth=root:{{ .Values.endpoints.oslo_db.auth.admin.password }}
wsrep_sst_method=xtrabackup-v2

[mysqldump]
max-allowed-packet=16M

[client]
default_character_set=utf8
protocol=tcp
port={{ tuple "oslo_db" "internal" "mysql" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}
connect_timeout=10