polardbxengine/storage/ndb/test/crund/config_samples/my.cnf_commented

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# my.cnf -- MySQL Server configuration file (options case-sensitive)

# memo: server variables (system/status, session/global)
# mysql> show [session|global] status [like '%pattern%' | where expr];
# mysql> show [session|global] variables [like '%pattern%' | where expr];
# mysql> select @@{session|global}.xxx, ...
# mysql> set [session|global] xxx=default, @@{session|global}.xxx=DEFAULT, ...
# set boolean options/variables=1|0 (on|off ignored for cmd/cnf options)

#
# options for mysql clients
#
[client]

#port=3306
#socket=.../mysql.sock

#
# cluster-specific options
#
[mysql_cluster]

# connectstring to management server (mandatory, here or per command line)
# - option: --ndb-connectstring
# - variable: n/a
# - format: [nodeid=node_id, ]host_name[:port_number][,...]
# - default: localhost:1186
ndb-connectstring=127.0.0.1
#ndb-connectstring=127.0.0.1:1187

#
# mysql server options
#
[mysqld]

# ndb<=7.1: enable innodb plugin
#ignore-builtin-innodb
#plugin-load=innodb=ha_innodb_plugin.so

# unique server identity for replication
# - option: server-id
# - variable: server_id (system, global, changeable)
# - default: 0 (disables all connections to master or from slaves)
#server-id=0

# server's port specs (here or per command line)
# - option: --port or -P
# - variable: port (system, global, constant)
# - default: 3306
#port=3306
# socket spec for local connections (here or per command line)
# - option: --socket
# - variable: socket (global, constant)
# - default: /tmp/mysql.sock
#socket=.../ndblog/mysql.sock

# the data directory (here or per command line)
# - option: --datadir
# - variable: datadir (system, global, constant)
#datadir=.../ndblog

# verbosity
# - option: -v -v -v, --verbose
# - variable: n/a
#verbose

# enable binary logging
# - options: --log-bin, --log-bin-index
# - variable: log_bin (system, global, constant)
# - default: log-bin = <host_name>-bin.<6-digit-suffix>
# - default: log-bin-index = <host_name>-bin.index
# - default: <data directory> unless absolute path given
#log-bin=mysql-bin.log
#log-bin-index=mysql-bin.index
# set the binary logging format (might be redundant for cluster tables)
# - option: --binlog-format
# - variable: binlog_format (system, global+session, changeable)
# - default: STATEMENT (ROW, STATEMENT, MIXED)
#binlog-format=ROW
# turn on/off binary logging
# - variable: sql_log_bin (system, session, changeable)
# - default: 1

#
# generic replication slave options and variables
#

# do not start the slave threads when the server starts
# - option: --skip-slave-start
# - variable: n/a
skip-slave-start

# basename for the relay log (and relay log index file)
# - options: --relay-log, --relay-log-index
# - variables: relay_log, relay_log_index (system global, constant)
# - default: relay-log = <host_name>-relay-bin.<6-digit-suffix>
# - default: relay-log-index = <host_name>-relay-bin.index
# - default: <data directory> unless absolute path given
#relay-log=mysql-relay-bin
#relay-log-index=mysql-relay-bin.index

# log updates from master to the slave's own binary log
# - option: --log-slave-updates (requires log-bin)
# - variable: log_slave_updates (system, global, constant)
#log-slave-updates

# do not skip events having its own server ID (for replaying binlog)
# - option: --replicate-same-server-id (cannot be used with log-slave-updates)
# - variable: n/a
# - default: 0 (to prevent infinite loops caused by circular replication)
#replicate-same-server-id

# attempts to connect to the master before giving up
# - option: --master-retry-count
# - variable: n/a
# - default: 86400 (0 means "infinite", i.e. slave attempts to connect forever)
#master-retry-count=1

# relax replication type enforcements
# - option: --slave-type-conversions
# - variable: slave-type-conversions (system, global, constant)
# - default: none of (one or more) ALL_LOSSY, ALL_NON_LOSSY
#slave-type-conversions=ALL_NON_LOSSY

#
# mysqld cluster settings
#

# maximum size of one packet or any generated/intermediate string
# should be as big as the largest BLOB you want to use. The protocol limit
# for max_allowed_packet is 1GB. The value should be a multiple of 1024;
# nonmultiples are rounded down to the nearest multiple.
#
# caught java.sql.BatchUpdateException: Packet for query is too large (1062229 > 1048576). You can change this value on the server by setting the max_allowed_packet' variable.
# java.sql.BatchUpdateException: Packet for query is too large (1062229 > 1048576). You can change this value on the server by setting the max_allowed_packet' variable.
#max_allowed_packet=16M

# enable batched operations on MySQL Cluster replication slaves
# - option: --slave-allow-batching (or slave_allow_batching)
# - variable: slave_allow_batching (system, global, changeable)
# - default: 0
#slave-allow-batching

# set the size in bytes that is used for NDB transaction batches
# - option: --ndb-batch-size (or ndb_batch_size)
# - variable: ndb_batch_size (system, global, constant)
# - default: 32768 (0 .. 31536000)
#ndb-batch-size=0
#ndb-batch-size=1000
#ndb-batch-size=1000000

# recommended performance settings
# option: --ndb-use-exact-count
# variable: ndb_use_exact_count (system, global+session, changeable)
ndb-use-exact-count=0
# option: --ndb-index-stat-enable (or ndb_index_stat_enable)
# variable: n/a
ndb-index-stat-enable=0
# option: --ndb-force-send (or ndb_force_send)
# variable: n/a
ndb-force-send=1
# ndb<=7.2: enable condition pushdown
# option: --engine-condition-pushdown
# variable: engine_condition_pushdown (system, global+session, changeable)
#engine-condition-pushdown=1

# enable NDB storage engine (mandatory, here or per command line)
# option: --ndbcluster
# variable: have_ndbcluster (system, global, constant)
ndbcluster

#
# other options
#

# sql modes, transaction isolation levels (cluster: only read committed)
# - options: -a, --ansi, --sql-mode, --transaction-isolation
# - variables: tx_isolation, sql_mode (system, global+session, changeable)
# - mysql> set [global|session] transaction isolation level
#          {read uncommitted|read committed|repeatable read|serializable};
# - mysql> set [global|session] tx_isolation=
#          'read-uncommitted|read-committed|repeatable-read|serializable';
# - mysql> set [global|session] sql_mode='ansi|traditional|...';