my.cnf

[client]
socket=/var/lib/mysql/mysql.sock
default-character-set = utf8mb4

[mysql]
default-character-set = utf8mb4

[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
server-id=20
datadir=/home/data/mysql
socket=/var/lib/mysql/mysql.sock
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
log-bin
log_slave_updates
expire_logs_days=7

log_timestamps = SYSTEM
thread_handling = pool-of-threads
innodb_buffer_pool_size = 20G
innodb_flush_log_at_trx_commit = 1
sync_binlog = 1
innodb_file_per_table = 1
innodb_log_file_size = 256M
innodb_log_files_in_group = 2
max_connections = 1000
max_connect_errors = 100000
open_files_limit = 10000
innodb_open_files = 10000
table_open_cache = 10000
table_definition_cache = 10000
key_buffer_size = 32M
query_cache_type = 0
query_cache_size = 0
log-bin-trust-function-creators=1
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

log_output=file
slow_query_log=ON
long_query_time=3
log_slow_rate_limit=100
log_slow_rate_type=query
log_slow_verbosity=full
log_slow_admin_statements=ON
log_slow_slave_statements=ON
slow_query_log_always_write_time=1
slow_query_log_use_global_control=all
innodb_monitor_enable=all
userstat=1

#init_connect='insert into db_monitor.accesslog(thread_id,log_time,localname,matchname) values(connection_id(),now(),user(),current_user());'