# This file contains wsrep-related mysqld options. It should be included
# in the main MySQL configuration file.
#
# Options that need to be customized:
#  - wsrep_provider
#  - wsrep_cluster_address
#  - wsrep_sst_auth
# The rest of defaults should work out of the box.

##
## mysqld options _MANDATORY_ for correct opration of the cluster
##
[mysqld]

# (This must be substituted by wsrep_format)
binlog_format=ROW

# Currently only InnoDB storage engine is supported
default-storage-engine=innodb

# to avoid issues with 'bulk mode inserts' using autoinc
innodb_autoinc_lock_mode=2

# This is a must for paralell applying
innodb_locks_unsafe_for_binlog=1

# Query Cache is not supported with wsrep
query_cache_size=0
query_cache_type=0

# Override bind-address
# In some systems bind-address defaults to 127.0.0.1, and with mysqldump SST
# it will have (most likely) disastrous consequences on donor node
#bind-address={{ hostvars[inventory_hostname]['ansible_' + INTERNAL_INTERFACE].ipv4.address }}
bind-address={{ HA_VIP }}

##
## WSREP options
##

# Full path to wsrep provider library or 'none'
wsrep_provider=/usr/lib/galera/libgalera_smm.so

# Provider specific configuration options
#wsrep_provider_options=

# Logical cluster name. Should be the same for all nodes.
wsrep_cluster_name="my_wsrep_cluster"

# Group communication system handle
wsrep_cluster_address=gcomm://{{ HA_CLUSTER[inventory_hostname] }}

# Human-readable node name (non-unique). Hostname by default.
#wsrep_node_name=

# Base replication <address|hostname>[:port] of the node.
# The values supplied will be used as defaults for state transfer receiving,
# listening ports and so on. Default: address of the first network interface.
wsrep_node_address={{ hostvars[inventory_hostname]['ansible_' + INTERNAL_INTERFACE].ipv4.address }}

# Address for incoming client connections. Autodetect by default.
#wsrep_node_incoming_address=

# How many threads will process writesets from other nodes
wsrep_slave_threads=1

# DBUG options for wsrep provider
#wsrep_dbug_option

# Generate fake primary keys for non-PK tables (required for multi-master
# and parallel applying operation)
wsrep_certify_nonPK=1

# Maximum number of rows in write set
wsrep_max_ws_rows=131072

# Maximum size of write set
wsrep_max_ws_size=1073741824

# to enable debug level logging, set this to 1
wsrep_debug=1

# convert locking sessions into transactions
wsrep_convert_LOCK_to_trx=0

# how many times to retry deadlocked autocommits
wsrep_retry_autocommit=1

# change auto_increment_increment and auto_increment_offset automatically
wsrep_auto_increment_control=1

# retry autoinc insert, which failed for duplicate key error
wsrep_drupal_282555_workaround=0

# enable "strictly synchronous" semantics for read operations
wsrep_causal_reads=0

# Command to call when node status or cluster membership changes.
# Will be passed all or some of the following options:
# --status  - new status of this node
# --uuid    - UUID of the cluster
# --primary - whether the component is primary or not ("yes"/"no")
# --members - comma-separated list of members
# --index   - index of this node in the list
wsrep_notify_cmd=

##
## WSREP State Transfer options
##

# State Snapshot Transfer method
wsrep_sst_method=rsync

# Address on THIS node to receive SST at. DON'T SET IT TO DONOR ADDRESS!!!
# (SST method dependent. Defaults to the first IP of the first interface)
#wsrep_sst_receive_address=

# SST authentication string. This will be used to send SST to joining nodes.
# Depends on SST method. For mysqldump method it is root:<root password>
wsrep_sst_auth={{ WSREP_SST_USER }}:{{ WSREP_SST_PASS }}

# Desired SST donor name.
#wsrep_sst_donor=

# Protocol version to use
# wsrep_protocol_version=