MySQL最优配置模板（ 5.6&5.7）（运维那点事）

MySQL 5.6&5.7配置文件（姜总提供）

[mysql]

default-character-set=utf8mb4

user = root

password = 123456

port = 3306

socket = /tmp/mysqld.sock

prompt="\u@\h \d>"

 

[mysqld]

# basic settings #

user = mysql

bind-address = 0.0.0.0

socket = /tmp/mysqld.sock

character_set_server = utf8mb4

transaction_isolation = READ-COMMITTED

explicit_defaults_for_timestamp = 1

max_allowed_packet = 67108864

max_long_data_size = 67108864

event_scheduler = 1

default_password_lifetime = 0

autocommit = 1

server-id = 1

sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER"

 

# connection #

interactive_timeout = 1800

wait_timeout = 1800

lock_wait_timeout = 1800

skip_name_resolve = 1

max_connections = 1024

max_user_connections = 256

max_connect_errors = 1000000

 

# table cache performance settings #

table_open_cache = 4096

table_definition_cache = 4096

table_open_cache_instances = 64

 

# session memory settings #

read_buffer_size = 16M

read_rnd_buffer_size = 32M

sort_buffer_size = 32M

tmp_table_size = 64M

join_buffer_size = 128M

thread_cache_size = 64

 

# log settings #

log_error = error.log

log-bin = mysql-bin

slow_query_log = 1

slow_query_log_file = slow.log

log_queries_not_using_indexes = 1

log_slow_admin_statements = 1

log_slow_slave_statements = 1

log_throttle_queries_not_using_indexes = 10

expire_logs_days = 30

long_query_time = 2

min_examined_row_limit = 100

binlog-rows-query-log-events = 1

log-bin-trust-function-creators = 1

log-slave-updates = 1

log_timestamps = system

 

# innodb settings #

innodb_page_size = 16384

innodb_buffer_pool_size = 160G

innodb_buffer_pool_instances = 16

innodb_buffer_pool_load_at_startup = 1

innodb_buffer_pool_dump_at_shutdown = 1

innodb_lru_scan_depth = 4096

innodb_lock_wait_timeout = 5

innodb_io_capacity = 10000

innodb_io_capacity_max = 20000

innodb_flush_method = O_DIRECT

innodb_file_format = Barracuda

innodb_file_format_max = Barracuda

innodb_undo_logs = 128

innodb_undo_tablespaces = 3

innodb_flush_neighbors = 0

innodb_log_file_size = 200M

innodb_log_files_in_group = 2

innodb_log_buffer_size = 16M

innodb_purge_threads = 4

innodb_large_prefix = 1

innodb_thread_concurrency = 64

innodb_print_all_deadlocks = 1

innodb_strict_mode = 1

innodb_sort_buffer_size = 67108864

innodb_write_io_threads = 16

innodb_read_io_threads = 16

innodb_file_per_table = 1

innodb_stats_persistent_sample_pages = 64

innodb_autoinc_lock_mode = 2

innodb_online_alter_log_max_size = 1G

innodb_open_files = 4096

innodb_flush_log_at_trx_commit = 1

innodb_support_xa = 1

 

# replication settings #

master_info_repository = TABLE

relay_log_info_repository = TABLE

sync_binlog = 1

gtid_mode = on

enforce_gtid_consistency = 1

log_slave_updates

binlog_format = ROW

binlog_rows_query_log_events = 1

relay_log = relay.log

relay_log_purge = 1

relay_log_recovery = 1

report-port = 3306

report-host = 10.106.144.11

slave_skip_errors = ddl_exist_errors

slave-rows-search-algorithms = 'INDEX_SCAN,HASH_SCAN'

 

# semi sync replication settings #

plugin_load = "validate_password.so;rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"

rpl_semi_sync_master_enabled = 1

rpl_semi_sync_master_timeout = 3000

rpl_semi_sync_slave_enabled = 1

 

# password plugin #

validate_password_policy=STRONG

validate-password=FORCE_PLUS_PERMANENT

 

# perforamnce_schema settings

performance-schema-instrument='memory/%=COUNTED'

performance_schema_digests_size = 40000

performance_schema_max_table_instances = 40000

performance_schema_max_sql_text_length = 4096

performance_schema_max_digest_length = 4096

 

[mysqld-5.6]

# metalock performance settings

metadata_locks_hash_instances = 64

 

[mysqld-5.7]

# new innodb settings #

loose_innodb_numa_interleave = 1

innodb_buffer_pool_dump_pct = 40

innodb_page_cleaners = 16

innodb_undo_log_truncate = 1

innodb_max_undo_log_size = 2G

innodb_purge_rseg_truncate_frequency = 128

 

# new replication settings #

slave-parallel-type = LOGICAL_CLOCK

slave-parallel-workers = 16

slave_preserve_commit_order = 1

slave_transaction_retries = 128

 

# other change settings #

binlog_gtid_simple_recovery = 1

show_compatibility_56 = on

 

# group replication settings

plugin-load = "group_replication.so;validate_password.so;semisync_master.so;semisync_slave.so"

transaction-write-set-extraction = XXHASH64

# report_host = 127.0.0.1 # optional for group replication

# binlog_checksum = NONE # only for group replication

loose_group_replication = FORCE_PLUS_PERMANENT

loose_group_replication_group_name = "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"

loose_group_replication_compression_threshold = 100

loose_group_replication_flow_control_mode = 0

loose_group_replication_single_primary_mode = 0

loose_group_replication_enforce_update_everywhere_checks = 1

loose_group_replication_transaction_size_limit = 10485760

loose_group_replication_unreachable_majority_timeout = 120

loose_group_replication_start_on_boot = 0

 

 

 

I assume the MySQL Server as followings. You should tune the variables according to your server.

• 32 CPU core
• 256G Memory
• SSD storage with 20000 IOPS in 16K page size