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@kostark
Created August 21, 2018 06:51
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mysql my.ini
# from http://www.fromdual.com/sites/default/files/my.cnf
# FromDual configuration file template for MySQL, Galera Cluster, MariaDB and Percona Server
# Location: /etc/my.cnf or /etc/mysql/my.cnf
# This template is intended to work with MySQL 5.6 and newer and MariaDB 10.0 and newer
# Get most recent updated from here:
# http://www.fromdual.com/mysql-configuration-file-sample
#
[client]
port = 3306
socket = /var/run/mysqld/mysql.sock # Use mysqld.sock on Ubuntu, conflicts with AppArmor otherwise
[mysql]
no_auto_rehash
max_allowed_packet = 16M
prompt = '\u@\h [\d]> ' # 'user@host [schema]> '
default_character_set = utf8 # Possibly this setting is correct for most recent Linux systems
[mysqldump]
max_allowed_packet = 16M
[mysqld_safe] # Becomes sooner or later obsolete with systemd
open_files_limit = 8192 # You possibly have to adapt your O/S settings as well
user = mysql
log-error = <hostname>_error.log # Adjust AppArmor configuration: /etc/apparmor.d/usr.sbin.mysqld
[mysqld]
# Connection and Thread variables
port = 3306
socket = /var/run/mysqld/mysql.sock # Use mysqld.sock on Ubuntu, conflicts with AppArmor otherwise
# basedir = /usr
# datadir = /var/lib/mysql
# tmpdir = /tmp
# innodb_tmpdir = /var/lib/mysql # MySQL 5.7
max_allowed_packet = 16M
default_storage_engine = InnoDB
# explicit_defaults_for_timestamp = 1 # MySQL 5.6, test carefully! This can have an impact on application.
# disable_partition_engine_check = true # Since MySQL 5.7.17 to 5.7.20. To get rid of nasty message in error log
# character_set_server = utf8 # If you prefer utf8
# collation_server = utf8_general_ci
max_connections = 505 # Values < 1000 are typically good
max_user_connections = 500 # Limit one specific user/application
thread_cache_size = 505 # Up to max_connections makes sense
# Query Cache
query_cache_type = 1 # Set to 0 to avoid global QC Mutex
query_cache_size = 32M # Avoid too big (> 128M) QC because of QC clean-up lock!
# Session variables
sort_buffer_size = 2M # Could be too big for many small sorts
tmp_table_size = 32M # Make sure your temporary results do NOT contain BLOB/TEXT attributes
read_buffer_size = 128k # Resist to change this parameter if you do not know what you are doing
read_rnd_buffer_size = 256k # Resist to change this parameter if you do not know what you are doing
join_buffer_size = 128k # Resist to change this parameter if you do not know what you are doing
# Other buffers and caches
table_definition_cache = 1400 # As big as many tables you have
table_open_cache = 2000 # connections x tables/connection (~2)
table_open_cache_instances = 16 # New default in 5.7
# MySQL error log
log_error = &lt;hostname&gt;_error.log # Adjust AppArmor configuration: /etc/apparmor.d/usr.sbin.mysqld
# log_timestamps = SYSTEM # MySQL 5.7, equivalent to old behaviour
log_warnings = 2
# log_error_verbosity = 3 # MySQL 5.7, equivalent to log_warnings = 2
# innodb_print_all_deadlocks = 1
# wsrep_log_conflicts = 1 # for Galera only!
# Slow Query Log
slow_query_log_file = &lt;hostname&gt;_slow.log # Adjust AppArmor configuration: /etc/apparmor.d/usr.sbin.mysqld
slow_query_log = 0
log_queries_not_using_indexes = 0
long_query_time = 0.5
min_examined_row_limit = 100
# General Query Log
general_log_file = &lt;hostname&gt;_general.log # Adjust AppArmor configuration: /etc/apparmor.d/usr.sbin.mysqld
general_log = 0
# Performance Schema
# performance_schema = ON # on some older MariaDB 10 releases
performance_schema_consumer_events_statements_history_long = ON # MySQL 5.6 and newer
# Binary logging and Replication
server_id = 42
log_bin = &lt;hostname&gt;_binlog # Locate outside of datadir, adjust AppArmor configuration: /etc/apparmor.d/usr.sbin.mysqld
# master_verify_checksum = ON # MySQL 5.6
binlog_cache_size = 1M
binlog_stmt_cache_size = 1M
max_binlog_size = 128M # Make bigger for high traffic to reduce number of files
sync_binlog = 0 # Set to 1 or higher to reduce potential loss of binary-log data
expire_logs_days = 5 # We will survive easter holidays
binlog_format = ROW # Use MIXED if you experience some troubles
# binlog_row_image = MINIMAL # Since 5.6
# auto_increment_increment = 2 # For Master/Master set-ups use 2 for both nodes
# auto_increment_offset = 1 # For Master/Master set-ups use 1 and 2
# Slave variables
log_slave_updates = 1 # Use if Slave is used for Backup and PiTR
read_only = 0 # Set to 1 to prevent writes on Slave
# super_read_only = 0 # Set to 1 to prevent writes on Slave for users with SUPER privilege. Since 5.7
# skip_slave_start = 1 # To avoid start of Slave thread
# relay_log = &lt;hostname&gt;-relay-bin
# relay_log_info_repository = table # MySQL 5.6
# master_info_repository = table # MySQL 5.6
# slave_load_tmpdir = '/tmp'
# Crash-safe replication Master
# binlog_checksum = CRC32 # default
# sync_binlog = 1 # default since 5.7.6, but slow!
# innodb_support_xa = 1 # default, depracted since 5.7.10
# Crash-safe replication Slave
# master_info_repository = TABLE
# relay_log_info_repository = TABLE
# relay_log_recovery = 1
# sync_relay_log_info = 1
# relay_log_purge = 1 # default
# slave_sql_verify_checksum = 1 # default
# GTID replication
# gtid_mode = ON # Master and Slave
# enforce_gtid_consistency = 1 # Master and Slave
# log_bin = %INSTANCEDIR%/binlog/%UNAME%_%INSTANCE%_binlog # In 5.6 also on Slave
# log_slave_updates = 1 # In 5.6 also on Slave
# Security variables
# local_infile = 0 # If you are security aware
# secure_auth = 1 # If you are security aware
# sql_mode = TRADITIONAL,ONLY_FULL_GROUP_BY,NO_ENGINE_SUBSTITUTION,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER # Be careful changing this afterwards
# skip_name_resolve = 0 # Set to 1 if you do not trust your DNS or experience problems
# secure_file_priv = '/tmp' # chmod 750, adjust AppArmor configuration: /etc/apparmor.d/usr.sbin.mysqld
# MyISAM variables
key_buffer_size = 8M # Set to 25 - 33 % of RAM if you still use MyISAM
myisam_recover_options = 'BACKUP,FORCE'
# disabled_storage_engines = 'MyISAM,MEMORY' # MySQL 5.7, do NOT during/before mysql_upgrade, good for Galera!
# MEMORY variables
max_heap_table_size = 64M # Should be greater or equal to tmp_table_size
# InnoDB variables
innodb_strict_mode = ON
innodb_file_format_check = 1
# innodb_file_format = Barracuda # For dynamic and compressed InnoDB tables
innodb_buffer_pool_size = 128M # Go up to 80% of your available RAM
innodb_buffer_pool_instances = 8 # Bigger if huge InnoDB Buffer Pool or high concurrency
innodb_file_per_table = 1 # Is the recommended way nowadays
# innodb_flush_method = O_DIRECT # O_DIRECT is sometimes better for direct attached storage
# innodb_write_io_threads = 8 # If you have a strong I/O system or SSD
# innodb_read_io_threads = 8 # If you have a strong I/O system or SSD
# innodb_io_capacity = 1000 # If you have a strong I/O system or SSD
innodb_flush_log_at_trx_commit = 2 # 1 for durability, 0 or 2 for performance
innodb_log_buffer_size = 8M # Bigger if innodb_flush_log_at_trx_commit = 0
innodb_log_file_size = 256M # Bigger means more write throughput but longer recovery time
# Galera specific MySQL parameter
# default_storage_engine = InnoDB # Galera only works with InnoDB
# innodb_flush_log_at_trx_commit = 2 # Durability is achieved by committing to the Group
# innodb_autoinc_lock_mode = 2 # For parallel applying
# binlog_format = row # Galera only works with RBR
# query_cache_type = 0 # Use QC with Galera only in a Master/Slave set-up
# query_cache_size = 0
# WSREP parameter
# wsrep_on = on # Only MariaDB >= 10.1
# wsrep_provider = none # Start mysqld without Galera
# wsrep_provider = /usr/lib/galera/libgalera_smm.so # Location of Galera Plugin on Ubuntu ?
# wsrep_provider = /usr/lib64/galera-3/libgalera_smm.so # Location of Galera Plugin on CentOS 7
# wsrep_provider_options = 'gcache.size = 1G' # Depends on you workload, WS kept for IST
# wsrep_cluster_name = "My cool Galera Cluster" # Same Cluster name for all nodes
# wsrep_cluster_address = "gcomm://" # Old bootstrap method
# wsrep_cluster_address = "gcomm://192.168.0.2,192.168.0.3" # Start other nodes like this
# wsrep_node_name = "Node A" # Unique node name
# wsrep_node_address = 192.168.0.1 # Our address where replication is done
# wsrep_node_incoming_address = 10.0.0.1 # Our external interface where application comes from
# wsrep_sync_wait = 1 # If you need realy full-synchronous replication (Galera 3.6 and newer)
# wsrep_slave_threads = 16 # 4 - 8 per core, not more than wsrep_cert_deps_distance
# wsrep_sst_method = rsync # SST method (initial full sync): mysqldump, rsync, rsync_wan, xtrabackup-v2
# wsrep_sst_auth = sst:secret # Username/password for sst user
# wsrep_sst_receive_address = 192.168.0.1 # Our address where to receive SST
# Group Replication parameter
# default_storage_engine = InnoDB # Group Replication only works with InnoDB
# server_id = %SERVERID% # Should be different on all 3 nodes
# log_bin = %INSTANCEDIR%/binlog/%UNAME%_%INSTANCE%_binlog # Locate outside of datadir, adjust AppArmor configuration: /etc/apparmor.d/local/usr.sbin.mysqld
# binlog_format = ROW
# binlog_checksum = NONE # not default!
# gtid_mode = ON
# enforce_gtid_consistency = ON
# master_info_repository = TABLE
# relay_log_info_repository = TABLE
# log_slave_updates = ON
# slave_parallel_workers = &lt;n&gt; # 1-2/core, max. 10
# slave_preserve_commit_order = ON
# slave_parallel_type = LOGICAL_CLOCK
# transaction_write_set_extraction = XXHASH64
# loose-group_replication_group_name = "$(uuidgen)" # Must be the same on all nodes
# loose-group_replication_start_on_boot = OFF
# loose-group_replication_local_address = "192.168.0.1"
# loose-group_replication_group_seeds = "192.168.0.1,192.168.0.2,192.168.0.3" # All nodes of Cluster
# loose-group_replication_bootstrap_group = OFF
# loose-group_replication_single_primary_mode = FALSE # = multi-primary
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