大家根据自己的服务器配置，选择合适的配置选项。并不是所有都适合，尤其设置文件和内存大小。
[client]
port = 3306
#socket = /data/mysql/tmp/mysql.sock
default-character-set = utf8
[mysqld]
# ---------------- Basic ----------------
port = 3306
#socket = /data/mysql/tmp/mysql.sock
#basedir = /usr/local/mysql
#datadir = /data/mysql/data
#pid-file = /data/mysql/tmp/mysql.pid
user = mysql
#tmpdir = /data/mysql/tmp
character_set_server = utf8
transaction_isolation = READ-COMMITTED
default-storage-engine = InnoDB
explicit_defaults_for_timestamp = 1
lower_case_table_names = 1
event_scheduler = 1
skip-external-locking
#sql_mode = 'NO_AUTO_VALUE_ON_ZERO,STRICT_TRANS_TABLES,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,PIPES_AS_CONCAT,ANSI_QUOTES'
#plugin_dir = /usr/local/mysql/lib/mysql/plugin
#replicate-ignore-db = mysql
# ---------------- Connection/File/Table ----------------
interactive_timeout = 1800
wait_timeout = 1800
lock_wait_timeout = 1800
skip_name_resolve = 1
max_connections = 1000
max_user_connections = 256
max_connect_errors = 20000
back_log = 600
open_files_limit = 8192
table_open_cache = 4096
table_definition_cache = 4096
table_open_cache_instances = 64
# ---------------- Session Buffer Cache ----------------
query_cache_size = 0
query_cache_type = 0
max_allowed_packet = 64M
read_buffer_size = 16M
read_rnd_buffer_size = 16M
sort_buffer_size = 16M
tmp_table_size = 64M
join_buffer_size = 32M
thread_cache_size = 64
thread_stack = 256K
# ---------------- Thread Pool ----------------
thread_handling = pool-of-threads
thread_pool_oversubscribe = 3
thread_pool_size = 24
extra_max_connections = 8
extra_port = 33333
# ---------------- Logfile ----------------
#log-error = /data/mysql/log/error.log
slow_query_log = 1
#slow_query_log_file = /data/mysql/log/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
min_examined_row_limit = 100
binlog-rows-query-log-events = 1
log-bin-trust-function-creators = 1
long_query_time = 0.1
# ---------------- Binlog ----------------
#log-bin = /data/mysql/log/binlog/mysql-bin
#log-bin-index = /data/mysql/log/binlog/mysql-bin.index
binlog_format = row
expire_logs_days = 7
sync_binlog = 1
binlog_cache_size = 8M
max_binlog_cache_size = 2048M
max_binlog_size = 1024M
binlog_rows_query_log_events = 1
# ---------------- InnoDB ----------------
#innodb_buffer_pool_size = 18G
innodb_buffer_pool_size = 2G
#innodb_buffer_pool_instances = 8
innodb_buffer_pool_instances = 1
innodb_online_alter_log_max_size = 1024M
innodb_thread_concurrency = 8
innodb_io_capacity = 4000
innodb_io_capacity_max = 8000
innodb_sort_buffer_size = 64M
innodb_page_size = 16K
innodb_open_files = 4096
innodb_flush_log_at_trx_commit = 1
innodb_read_io_threads = 8
innodb_write_io_threads = 8
innodb_purge_threads = 4
innodb_max_dirty_pages_pct = 80
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_lock_wait_timeout = 10
innodb_rollback_on_timeout = 1
innodb_lru_scan_depth = 4096
innodb_flush_method = O_DIRECT
innodb_checksum_algorithm = CRC32
innodb_file_per_table = 1
innodb_file_format = Barracuda
innodb_file_format_max = Barracuda
innodb_flush_neighbors = 0
innodb_large_prefix = 1
innodb_print_all_deadlocks = 1
innodb_stats_persistent_sample_pages = 64
innodb_autoinc_lock_mode = 2
innodb_sync_spin_loops = 100
innodb_spin_wait_delay = 30
innodb_stats_on_metadata = 0
# ---------------- Redo/Undo ----------------
innodb_log_buffer_size = 16M
innodb_log_file_size = 1024M
innodb_log_files_in_group = 3
#innodb_log_group_home_dir = /data/mysql/log/redo
innodb_undo_logs = 128
innodb_undo_tablespaces = 3
#innodb_undo_directory = /data/mysql/log/undo
# ---------------- Replication ----------------
server-id = 101
master_info_repository = TABLE
relay_log_info_repository = TABLE
gtid_mode = on
enforce_gtid_consistency = 1
log_slave_updates = 1
#relay_log = /data/mysql/log/relay/relay.log
relay_log_recovery = 1
slave_skip_errors = ddl_exist_errors
slave-rows-search-algorithms = 'INDEX_SCAN,HASH_SCAN'
# ---------------- Semi Sync Replication ----------------
#plugin_load = "rpl_semi_sync_master=semisync_master.so;rpl_semi_sync_slave=semisync_slave.so"
#loose_rpl_semi_sync_master_enabled = 1
#loose_rpl_semi_sync_slave_enabled = 1
#loose_rpl_semi_sync_master_timeout = 5000
# ---------------- perforamnce_schema ----------------
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
loose_innodb_numa_interleave = 1
innodb_buffer_pool_dump_pct = 40
innodb_page_cleaners = 4
innodb_undo_log_truncate = 1
innodb_max_undo_log_size = 2G
innodb_purge_rseg_truncate_frequency = 128
slave-parallel-type = LOGICAL_CLOCK
slave-parallel-workers = 16
slave_preserve_commit_order = 1
slave_transaction_retries = 128
binlog_gtid_simple_recovery = 1
log_timestamps = system
show_compatibility_56 = 1
# ---------------- MySQL Group Replication ----------------
#plugin_load = "group_replication.so"
#binlog_checksum = NONE
transaction_write_set_extraction = MURMUR32
#transaction_write_set_extraction = XXHASH64
#report_host = 127.0.0.1
#loose_group_replication_group_name = "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaaa"
#loose_group_replication_start_on_boot = 0
#loose_group_replication_local_address = "127.0.0.1:33060"
#loose_group_replication_group_seeds = "127.0.0.1:33060,127.0.0.1:33060,127.0.0.1:33060"
#loose_group_replication_compression_threshold = 100
#loose_group_replication_flow_control_mode = 0
#loose_group_replication_single_primary_mode = 1
#loose_group_replication_enforce_update_everywhere_checks = 0
#loose_group_replication_transaction_size_limit = 10485760
#loose_group_replication_unreachable_majority_timeout = 120
[mysqldump]
quick
max_allowed_packet = 64M
single-transaction
#[mysqld_safe]
#malloc-lib = tcmalloc
#malloc-lib = /usr/lib64/libjemalloc.so.1
[mysql]
default-character-set=utf8