下载地址： https://dev.mysql.com/downloads/mysql/
1.解压mysql 文件包，解压路径/home/mysql
tar -zxvf mysql-8.0.31-linux-glibc2.12-x86_64.tar
2.编写配置
[client]
#password = your_password
port = 3306
socket = /home/mysql/tmp/mysql.sock
[mysqld]
port = 3306
socket = /home/mysql/tmp/mysql.sock
basedir= /home/mysql
datadir = /home/mysql/data
default_storage_engine = InnoDB
performance_schema_max_table_instances = 400
table_definition_cache = 400
skip-external-locking
key_buffer_size = 128M
max_allowed_packet = 100G
table_open_cache = 512
sort_buffer_size = 2M
net_buffer_length = 4K
read_buffer_size = 2M
read_rnd_buffer_size = 256K
myisam_sort_buffer_size = 32M
thread_cache_size = 64
query_cache_size = 64M
tmp_table_size = 64M
sql-mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
explicit_defaults_for_timestamp = true
#skip-name-resolve
max_connections = 500
max_connect_errors = 100
open_files_limit = 65535
log-bin=mysql-bin
binlog_format=mixed
server-id = 1
expire_logs_days = 10
slow_query_log=1
slow-query-log-file=/home/mysql/data/mysql-slow.log
long_query_time=3
#log_queries_not_using_indexes=on
early-plugin-load = ""
innodb_data_home_dir = /home/mysql/data
innodb_data_file_path = ibdata1:10M:autoextend
innodb_log_group_home_dir = /home/mysql/data
innodb_buffer_pool_size = 512M
innodb_log_file_size = 256M
innodb_log_buffer_size = 64M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50
innodb_max_dirty_pages_pct = 90
innodb_read_io_threads = 4
innodb_write_io_threads = 4
[mysqldump]
quick
max_allowed_packet = 500M
[mysql]
no-auto-rehash
[myisamchk]
key_buffer_size = 128M
sort_buffer_size = 2M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
3.新增mysql用户及用户组
groupadd mysql & useradd -r -g mysql mysql
4.初始化数据库
/home/mysql/bin/mysqld --defaults-file=/home/mysql/my.cnf --datadir = /home/mysql/data --user=mysql
5.启动数据库
/home/mysql/bin/mysqld_safe --defaults-file=/home/mysql/my.cnf --datadir = /home/mysql/data --user=mysql
6.访问数据库
/home/mysql/bin/mysql -S /home/mysql/tmp/mysql.sock -u root -p
