mysql生产环境安装部署配置（专业版）

vim /etc/systemd/system.conf  centos7调整如下2个值
#DefaultLimitNOFILE=
DefaultLimitNOFILE=655350
#DefaultLimitAS=
#DefaultLimitNPROC=
DefaultLimitNPROC=655350

#少用交换分区
vm.swappiness <= 5
vm.dirty_ratio <= 20
vm.dirty_background_ratio <= 10
net.ipv4.tcp_max_syn_backlog = 819200
net.core.netdev_max_backlog = 400000
net.core.somaxconn = 4096
#解决time_wait过高导致数据库连接不上
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 30

[root@localhost local]# wget https://downloads.mysql.com/archives/get/p/23/file/mysql-8.0.18-linux-glibc2.12-x86_64.tar.xz
比对MD5值和官方是否一直
[root@localhost local]# md5sum mysql-8.0.18-linux-glibc2.12-x86_64.tar.xz 
686b454f7f7f0b0bf4814929fcd0fa81  mysql-8.0.18-linux-glibc2.12-x86_64.tar.xz

创建组
groupadd mysql
创建一个没有shell的帐号
useradd -g mysql -d /usr/local/mysql -s /sbin/nologin -MN mysql

[root@localhost local]# tar -Jxvf mysql-8.0.18-linux-glibc2.12-x86_64.tar.xz
[root@localhost local]# chown mysql:mysql -R /usr/local/mysql-8.0.18-linux-glibc2.12-x86_64

[root@localhost local]# ln -s /usr/local/mysql-8.0.18-linux-glibc2.12-x86_64/ mysql

创建数据目录data日志目录log临时目录tmp
[root@localhost local]# mkdir /data/mysql/mysql3312/{data,log,tmp} -p
这种目录规划有利于后期单机部署多mysql实例
目录权限更改
[root@localhost local]# chown mysql:mysql -R /data/mysql/mysql3312

/usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/mysql3312/my3312.cnf --initialize

/usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/mysql3312/my3312.cnf --user=mysql &

[client]
port	= 3312
socket	= /tmp/mysql3312.sock

[mysql]
prompt="\\u@\\h [\\d]>"
no-auto-rehash

[mysqld]
user	= mysql
port	= 3312
basedir	= /usr/local/mysql
datadir	= /data/mysql/mysql3312/data
socket	= /tmp/mysql3312.sock
server_id = 113312
super_read_only=0
read_only=0
mysqlx_port=33120
character-set-server = utf8
explicit_defaults_for_timestamp = 1
log_timestamps = SYSTEM
default_time_zone = "+8:00"
skip_name_resolve = 1
lower_case_table_names = 1   
default_authentication_plugin=mysql_native_password

secure_file_priv =/tmp/
local_infile=on
show-slave-auth-info = on

open_files_limit    = 65535
back_log = 3000
max_connections = 2048
max_connect_errors = 1000000
table_open_cache = 91920
table_definition_cache = 40960
table_open_cache_instances = 64
max_prepared_stmt_count = 1048576

thread_stack = 512K
external-locking = FALSE
max_allowed_packet = 32M
sort_buffer_size = 1M
join_buffer_size = 1M
thread_cache_size = 768
interactive_timeout = 300
wait_timeout = 300
tmp_table_size = 16M
max_heap_table_size = 16M

#### for slow query log
slow_query_log = 1
slow_query_log_file = slow.log
log-error = error.log
long_query_time = 1
log_queries_not_using_indexes =1
log_throttle_queries_not_using_indexes = 60
min_examined_row_limit = 10000
log_slow_admin_statements = 1
log_slow_slave_statements = 1


###for binlog
log-bin = /data/mysql/mysql3312/logs/mysql-bin
binlog_rows_query_log_events = on
sync_binlog = 1
binlog_cache_size = 4M
max_binlog_cache_size = 6G
max_binlog_size = 1G
binlog_format = row
binlog_expire_logs_seconds = 604800


## for gtid
gtid_mode = on
enforce_gtid_consistency = 1

# master
loose-binlog_transaction_dependency_tracking = WRITESET
loose-transaction_write_set_extraction = XXHASH64
binlog_transaction_dependency_history_size = 25000 #默认

## for replication
master_info_repository = TABLE
relay_log_info_repository = TABLE
log_slave_updates
slave-rows-search-algorithms = 'INDEX_SCAN,HASH_SCAN'
relay_log_recovery = 1
relay-log-purge = 1
relay_log = relay-bin
relay_log_index= /data/mysql/mysql3312/logs/relay-bin
slave_parallel_type                  =logical_clock  
slave_parallel_workers               =32                         
#rpl_semi_sync_master_enabled        =1                        
#rpl_semi_sync_slave_enabled         =1                           
#rpl_semi_sync_master_timeout        =1000                         
#plugin_load_add                     =semisync_master.so  
#plugin_load_add                     =semisync_slave.so            
slave-preserve-commit-order   =ON 

key_buffer_size = 32M
read_buffer_size = 2M
read_rnd_buffer_size = 2M
bulk_insert_buffer_size = 64M
myisam_sort_buffer_size = 32M
myisam_repair_threads = 1
lock_wait_timeout = 3600
innodb_thread_concurrency = 0
innodb_sync_spin_loops = 100
innodb_spin_wait_delay = 30
transaction_isolation = READ-COMMITTED

innodb_buffer_pool_size = 20000M
innodb_buffer_pool_instances = 4
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1
innodb_data_file_path =ibdata1:100M:autoextend
innodb_flush_log_at_trx_commit = 1
innodb_log_buffer_size = 32M
innodb_log_file_size = 1G
innodb_log_files_in_group = 3
innodb_max_undo_log_size = 4G
innodb_undo_directory = undolog
innodb_undo_tablespaces = 95
innodb_io_capacity = 8000
innodb_io_capacity_max = 15000
innodb_flush_sync = 0
innodb_flush_neighbors = 0
innodb_write_io_threads = 8
innodb_read_io_threads = 8
innodb_purge_threads = 4
innodb_page_cleaners = 4
innodb_open_files = 65535
innodb_max_dirty_pages_pct = 50
innodb_flush_method = O_DIRECT
innodb_lru_scan_depth = 4000
innodb_checksum_algorithm = crc32
innodb_lock_wait_timeout = 10
innodb_rollback_on_timeout = 1
innodb_print_all_deadlocks = 1
innodb_file_per_table = 1
innodb_online_alter_log_max_size = 2G
innodb_stats_on_metadata = 0

# some var for MySQL 8
log_error_verbosity = 3
innodb_print_ddl_logs = 1
innodb_status_file = 1
innodb_status_output = 0
innodb_status_output_locks = 0

#performance_schema
performance_schema = 1
performance_schema_instrument = '%memory%=on'
performance_schema_instrument = '%lock%=on'
#innodb monitor
innodb_monitor_enable="module_innodb"
innodb_monitor_enable="module_server"
innodb_monitor_enable="module_dml"
innodb_monitor_enable="module_ddl"
innodb_monitor_enable="module_trx"
innodb_monitor_enable="module_os"
innodb_monitor_enable="module_purge"
innodb_monitor_enable="module_log"
innodb_monitor_enable="module_lock"
innodb_monitor_enable="module_buffer"
innodb_monitor_enable="module_index"
innodb_monitor_enable="module_ibuf_system"
innodb_monitor_enable="module_buffer_page"
innodb_monitor_enable="module_adaptive_hash"

[mysqldump]
quick
max_allowed_packet = 32M