# Juju managed file - don't change as charm will overwrite your changed!
[mysqld]

{% if bind_address %}
bind-address = {{ bind_address }}
{% endif %}

{% if wsrep_provider_options %}
wsrep_provider_options = {{ wsrep_provider_options }}
{% endif %}

datadir=/var/lib/mysql
user=mysql
pid_file = /var/run/mysqld/mysqld.pid

# Path to Galera library
wsrep_provider=/usr/lib/libgalera_smm.so
{% if not clustered %}
# Empty gcomm address is being used when cluster is getting bootstrapped
wsrep_cluster_address=gcomm://
{% else %}
# Cluster connection URL contains the IPs of node#1, node#2 and node#3
wsrep_cluster_address=gcomm://{{ cluster_hosts }}
{% endif %}
# In order for Galera to work correctly binlog format should be ROW
binlog_format=ROW

# MyISAM storage engine has only experimental support
default_storage_engine=InnoDB

# This is a recommended tuning variable for performance
innodb_locks_unsafe_for_binlog=1

# This changes how InnoDB autoincrement locks are managed and is a requirement for Galera
innodb_autoinc_lock_mode=2

{% if innodb_file_per_table -%}
# This enables storing InnoDB tables in separate .ibd files. Note that, however
# existing InnoDB tables will remain in ibdata file(s) unles OPTIMIZE is run
# on them. Still, the ibdata1 file will NOT shrink - a full dump/import of the
# data is needed in order to get rid of large ibdata file.
innodb_file_per_table = 1
{% else -%}
innodb_file_per_table = 0
{% endif %}

# Node #1 address
wsrep_node_address={{ private_address }}

# SST method
wsrep_sst_method={{ sst_method }}

# Cluster name
wsrep_cluster_name={{ cluster_name }}

# Authentication for SST method
wsrep_sst_auth="sstuser:{{ sst_password }}"

{% if max_connections != -1 %}
max_connections = {{ max_connections }}
{% endif %}

# Seconds before clearing idle connections
{% if wait_timeout != -1 %}
wait_timeout = {{ wait_timeout }}
{% endif %}

# Fine tuning
key_buffer_size = {{ key_buffer }}
table_open_cache = {{ table_open_cache }}
max_allowed_packet = 16M

# InnoDB buffer should consume 100% of the bytes of the dataset size
# query cache is not supported with Active/Active configuration
innodb_buffer_pool_size = {{ innodb_buffer_pool_size }}

{% if ipv6 -%}
[sst]
sockopt=,pf=ip6
{% endif %}

{% if lp1366997_workaround -%}
# Adding workaround for bug:
#    https://bugs.launchpad.net/charms/+source/percona-cluster/+bug/1366997
# Note that this should only be required for percona 5.5
wsrep_drupal_282555_workaround = ON
wsrep_retry_autocommit = 100
{% endif %}

!includedir /etc/mysql/conf.d/