MariaDBプロファイルmy.cnf
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# MariaDB database server configuration file.
#
# You can copy this file to one of:
# - "/etc/mysql/my.cnf" to set global options,
# - "~/.my.cnf" to set user-specific options.
#
# One can use all long options that the program supports.
# Run program with --help to get a list of available options and with
# --print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain "#" chars...
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[client]
port = 3306 #
socket = /var/run/mysqld/mysqld.sock #socket linux/unix ， tcp/ip ， socket
default-character-set = utf8mb4 # ,
# Here is entries for some specific programs
# The following values assume you have at least 32M ram
# This was formally known as [safe_mysqld]. Both versions are currently parsed.
[mysqld_safe]
socket = /var/run/mysqld/mysqld.sock
nice = 0
[mysqld]
#
# * Basic Settings
#
character-set-client-handshake = FALSE
character-set-server = utf8mb4 #
collation-server = utf8mb4_unicode_ci #
init_connect = 'SET NAMES utf8mb4'
user = mysql
pid-file = /var/run/mysqld/mysqld.pid # pid , Mysql , , mysqld , pkill mysql Mysql
socket = /var/run/mysqld/mysqld.sock # , Mysql , , mysqld , pkill mysql Mysql
port = 3306 #Mysql
basedir = /usr #Mysql
datadir = /mnt/data/mysql #Mysql
tmpdir = /tmp #Mysql ， ，
lc_messages_dir = /usr/share/mysql
lc_messages = en_US
skip-external-locking # ， .
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 112.124.37.33 # IP ， IP
#
# * Fine Tuning #
#
# , CPU 2: CPU's*2 for thread_concurrency
#thread_concurrency = 8 # ， MariaDB
max_connections = 5000 # mysql
#connect_timeout = 5
wait_timeout = 600 #SQL
max_allowed_packet = 16M # ， 1M， 1G
thread_cache_size = 256 # threadcache ， 0， ， ， ， ， ， ， 。 ：1G 8,2G 16,4G 64， ， . Connections Threads_created ，
sort_buffer_size = 4M # orderby groupby ， 2M, ， 100 ， 6*100； 6M-8M， ， connection ， + 。 ：500 500*sort_buffer_size(8M)=4G ， 2KB ， mmap() malloc() ， 。 。
bulk_insert_buffer_size = 16M # ， ， 8M
tmp_table_size = 64M # ， ，
max_heap_table_size = 64M
#
# * MyISAM
#
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched. On error, make copy and try a repair.
myisam_recover = BACKUP # MyISAM
key_buffer_size = 256M # ， ， ， 4G 256M 384M
#open-files-limit = 2000 # ， ，
table_open_cache = 400 # 。 ， 。 table_cache max_connections 。 200 # ， 200 × N ， N # 。 ， 。
# Mysql ， ， ； # ， Mysql ， # ； ， ， ， 。 flush tables # 。 ， Open_tables # Opened_tables ， table_cache （ open_tables # ， Opened_tables ）。 open_tables table_cache ， Opened_tables ， # 。 Table_locks_waited ， table_cache。
myisam_sort_buffer_size = 1024M #MyISAM
concurrent_insert = 2
read_buffer_size = 8M # MYISAM ， ，MySql 。read_buffer_size 。 ， ， 。
read_rnd_buffer_size = 8M # （ ） 。 ( ， )， 。 ，MySql ， ， ， ， 。 MySql ， ， 。
#
# * Query Cache Configuration
#
# Cache only tiny result sets, so we can fit more in the query cache.
query_cache_limit = 512K # ，
query_cache_size = 256M # mysql ， select ， ， Qcache_lowmem_prunes ， ， ， 。 ， ， 。 （ -MyISAM）
# for more write intensive setups, set to DEMAND or OFF
#query_cache_type = DEMAND # ，query_cahce ， OFF
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
# Be aware that this log type is a performance killer.
# As of 5.1 you can enable the log at runtime!
#general_log_file = /var/log/mysql/mysql.log
#general_log = 1
#
# Error logging goes to syslog due to /etc/mysql/conf.d/mysqld_safe_syslog.cnf.
#
# we do want to know about network errors and such
log_warnings = 2 # log . MySQL ， log ， 。
#
# Enable the slow query log to see queries with especially long duration
slow_query_log=1 #
#slow_query_log[={0|1}]
slow_query_log_file = /var/log/mysql/mariadb-slow.log #
long_query_time = 1 #
#log_slow_rate_limit = 1000
log_slow_verbosity = query_plan
#log-queries-not-using-indexes
#log_slow_admin_statements
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
# other settings you may need to change.
#server-id = 1 # , 1 2^32-1 ， master slave ， “master-host” , 1, ，MySQL master
#report_host = master1
#auto_increment_increment = 2
#auto_increment_offset = 1
log_bin = /var/log/mysql/mariadb-bin #
log_bin_index = /var/log/mysql/mariadb-bin.index
# not fab for performance, but safer
#sync_binlog = 1
expire_logs_days = 10
max_binlog_size = 100M
# slaves
#relay_log = /var/log/mysql/relay-bin
#relay_log_index = /var/log/mysql/relay-bin.index
#relay_log_info_file = /var/log/mysql/relay-bin.info
#log_slave_updates # (A->B->C)， B 。 ， 。
#read_only # slave . SUPER slave ， slave master 。
#
# If applications support it, this stricter sql_mode prevents some
# mistakes like inserting invalid dates etc.
#sql_mode = NO_ENGINE_SUBSTITUTION,TRADITIONAL
#
# * InnoDB
#
# InnoDB is enabled by default with a 10MB datafile in /var/lib/mysql/.
# Read the manual for more InnoDB related options. There are many!
default_storage_engine = InnoDB #
# you can't just change log file size, requires special procedure
#innodb_log_file_size = 50M
innodb_buffer_pool_size = 256M # Innodb 。Innodb MyISAM 。MyISAM key_buffer_size ， Innodb innodb_buffer_pool_size 。 Innodb ， ， Innodb 70-80% 。 key_buffer — ， ， innodb_buffer_pool_size 。 ， ， 。innodb_buffer_pool_size = 6G
innodb_log_buffer_size = 8M # ， M 。 ， ， , ( )，MySQL 1－8M
innodb_file_per_table = 1
innodb_open_files = 400
innodb_io_capacity = 400
innodb_flush_method = O_DIRECT #InnoDB ， ， “fdatasync”, “O_DSYNC”
#
# * Security Features
#
# Read the manual, too, if you want chroot!
# chroot = /var/lib/mysql/
#
# For generating SSL certificates I recommend the OpenSSL GUI "tinyca".
#
# ssl-ca=/etc/mysql/cacert.pem
# ssl-cert=/etc/mysql/server-cert.pem
# ssl-key=/etc/mysql/server-key.pem
[mysqldump]
quick # .
quote-names
max_allowed_packet = 16M # ， 1M， 1G
[mysql]
#no-auto-rehash # faster start of mysql but no tab completition
default-character-set = utf8mb4
[isamchk]
key_buffer = 16M
#
# * IMPORTANT: Additional settings that can override those from this file!
# The files must end with '.cnf', otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/