my.cnf

# Example MySQL config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# MySQL programs look for option files in a set of
# locations which depend on the deployment platform.
# You can copy this option file to one of those
# locations. For information about these locations, see:
# http://dev.mysql.com/doc/mysql/en/option-files.html
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.

# The following options will be passed to all MySQL clients
[client]
default-character-set = utf8
#character-set-server = utf8
#password   = your_password
port        = 3306
socket      = /tmp/mysql.sock

# Here follows entries for some specific programs

# The MySQL server
[mysqld]
port        = 3306
socket      = /tmp/mysql.sock
datadir = /usr/local/mysql/var
pid= /usr/local/mysql/var/mysql.pid
skip-external-locking
max_connections = 1000
key_buffer_size = 16M
max_allowed_packet = 100M
table_open_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M
event_scheduler = 1
#skip-locking
#skip-name-resolve
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init_connect='SET NAMES utf8mb4'
log-bin-trust-function-creators=1

slow_query_log = ON
slow_query_log_file = /usr/local/mysql/var/slow.log
long_query_time = 0.5

query_cache_size=0
query_cache_type=0

# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
# 
#skip-networking

# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin

# binary logging format - mixed recommended
binlog_format=mixed

# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id   = 1

#loose-innodb-trx=0 
#loose-innodb-locks=0 
#loose-innodb-lock-waits=0 
#loose-innodb-cmp=0 
#loose-innodb-cmp-per-index=0
#loose-innodb-cmp-per-index-reset=0
#loose-innodb-cmp-reset=0 
#loose-innodb-cmpmem=0 
#loose-innodb-cmpmem-reset=0 
#loose-innodb-buffer-page=0 
#loose-innodb-buffer-page-lru=0 
#loose-innodb-buffer-pool-stats=0 
#loose-innodb-metrics=0 
#loose-innodb-ft-default-stopword=0 
#loose-innodb-ft-inserted=0 
#loose-innodb-ft-deleted=0 
#loose-innodb-ft-being-deleted=0 
#loose-innodb-ft-config=0 
#loose-innodb-ft-index-cache=0 
#loose-innodb-ft-index-table=0 
#loose-innodb-sys-tables=0 
#loose-innodb-sys-tablestats=0 
#loose-innodb-sys-indexes=0 
#loose-innodb-sys-columns=0 
#loose-innodb-sys-fields=0 
#loose-innodb-sys-foreign=0 
#loose-innodb-sys-foreign-cols=0

# Uncomment the following if you are using InnoDB tables
innodb_data_home_dir = /usr/local/mysql/var
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = /usr/local/mysql/var
# You can set .._buffer_pool_size up to 50 - 80 %
# of RAM but beware of setting memory usage too high
innodb_buffer_pool_size = 16M
innodb_additional_mem_pool_size = 2M
# Set .._log_file_size to 25 % of buffer pool size
innodb_log_file_size = 5M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50

[mysqldump]
quick
max_allowed_packet = 16M

[mysql]
default-character-set = utf8mb4
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates

[myisamchk]
key_buffer_size = 20M
sort_buffer_size = 20M
read_buffer = 2M
write_buffer = 2M

[mysqlhotcopy]
interactive-timeout

expire_logs_days = 10