Linux 安装 MySQL 最新版本 8.0.25

1 下载 MySQL

cd /usr/src
wget https://mirrors.cloud.tencent.com/mysql/downloads/MySQL-8.0/mysql-8.0.25-linux-glibc2.12-x86_64.tar.xz

2 解压 MySQL 压缩包

xz -d mysql-8.0.25-linux-glibc2.12-x86_64.tar.xz
tar xvf mysql-8.0.25-linux-glibc2.12-x86_64.tar
mv mysql-8.0.25-linux-glibc2.12-x86_64 usr/local/mysql

3 创建 MySQL 相关目录

mkdir data/mysql/ -p
mkdir data/mysql/{binlog,data,log,tmpdir,conf} -p

4 创建 MySQL 用户

groupadd mysql
useradd -r -g mysql -s bin/false mysql

5 修改权限

chown -R mysql:mysql data/mysql/
chown -R mysql:mysql usr/local/mysql

6 增加配置文件

vim data/mysql/conf/my.cnf

[client]
port        = 3306
socket      = tmp/mysql.sock


[mysqld]
port    = 3306
socket  = tmp/mysql.sock


##  dir set
datadir           = data/mysql/data
innodb_data_home_dir   = data/mysql/data
innodb_log_group_home_dir = data/mysql/data
log-bin           = data/mysql/binlog/mysql-bin
log_bin_index             = data/mysql/binlog/mysql-bin.index  
relay-log         = data/mysql/binlog/mysql-relay-bin
tmpdir            = data/mysql/tmpdir
slow_query_log_file   = data/mysql/log/mysql-slow.log
general_log_file   = data/mysql/log/mysql-general.log
log-error         = data/mysql/log/mysql.err


## slave and binlog
server-id = 6666            #   
skip-slave-start = 0        #
read_only = 0           #
binlog_format = row             
log-slave-updates = 1
master_info_repository = table
relay_log_info_repository = table
relay_log_purge = 1
relay_log_recovery = 1
sync_binlog = 100                   # !!!


binlog_cache_size = 1M
expire_logs_days = 30
log_bin_trust_function_creators = 1         
slave_net_timeout=60                
#binlog_error_action="IGNORE_ERROR"     


innodb_autoinc_lock_mode=1          


## 
back_log = 200
bulk_insert_buffer_size = 8M            
#character-set-server = utf8
lower_case_table_names = 1              #  1：不区分


## 基线
local-infile = off
skip-networking = off
skip-name-resolve = on 


## connect
max_allowed_packet = 32M
max_connect_errors = 1000
max_connections = 3000
wait_timeout = 3600             # 关闭 非交互 连接之前等待活动的秒数 default:8h
interactive_timeout = 3600          # 关闭 交互式 连接之前等待活动的秒数 default:8h


table_open_cache = 4096
thread_cache_size =  64
thread_stack = 192K
transaction-isolation = REPEATABLE-READ     # 
pid-file = mysql.pid


## slow
slow_query_log = 1              
long_query_time = 1
log-slow-admin-statements
log_queries_not_using_indexes = 0
slow_launch_time = 1
read_buffer_size = 4M               
read_rnd_buffer_size = 8M           
sort_buffer_size = 8M
join_buffer_size = 32M
tmp_table_size = 128M
max_heap_table_size = 128M


default-storage-engine = innodb
explicit_defaults_for_timestamp = on           


## innodb
innodb_buffer_pool_size = 1G                    
innodb_max_dirty_pages_pct = 80         
innodb_thread_concurrency = 8           
innodb_buffer_pool_instances = 1        
innodb_flush_log_at_trx_commit = 2      
innodb_read_io_threads = 8          
innodb_write_io_threads = 4         
innodb_io_capacity = 1000
innodb_io_capacity_max = 2000
innodb_lru_scan_depth = 1024
innodb_use_native_aio = 1
innodb_flush_neighbors = 1
innodb_buffer_pool_load_at_startup = 1
innodb_buffer_pool_dump_at_shutdown = 1


innodb_data_file_path=ibdata:1G:autoextend
innodb_log_files_in_group = 3
innodb_log_file_size = 2G
innodb_file_per_table = 1 


innodb_flush_method = O_DIRECT
innodb_strict_mode = 1
innodb_lock_wait_timeout = 30
innodb_log_buffer_size = 16M
innodb_adaptive_flushing = 1
innodb_change_buffering = all
innodb_purge_threads = 4            
innodb_purge_batch_size = 300           


innodb_old_blocks_time = 1
innodb_fast_shutdown = 0
performance_schema = 1
innodb_print_all_deadlocks = 1
innodb_sort_buffer_size = 4M 


innodb_page_size = 16k
gtid_mode=on
enforce_gtid_consistency=on     


table_open_cache_instances=16
binlog_rows_query_log_events=1      


slave_parallel_workers = 0          # 多线程复制线程数
#slave_parallel_type=LOGICAL_CLOCK      
#binlog_group_commit_sync_delay = 500000  
#binlog_group_commit_sync_no_delay_count =12  


## pasword
default_password_lifetime=0                     # 0密码永不过期，N n天过期


[mysqldump]
quick
max_allowed_packet = 32M


[mysql]
no-auto-rehash
prompt=\p@\d>\_


[mysqld_safe]
open-files-limit = 28192


[mysqlhotcopy]
interactive-timeout

7 初始化

/usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/conf/my.cnf --user=mysql --initialize

8 获取临时密码

grep "password" /data/mysql/log/mysql.err

注意：

如果这里获取不到密码行，请检查 /data/mysql/log/mysql.err，确认是否是初始化异常。

9 启动 MySQL

nohup /usr/local/mysql/bin/mysqld --defaults-file=/data/mysql/conf/my.cnf --user=mysql &

10 增加环境变量

MYSQL_HOME=/usr/local/mysql
PATH=$PATH:$MYSQL_HOME/bin
export PATH MYSQL_HOME

source /etc/profile

11 登录 MySQL

mysql -uroot -p'j#D_tdy.p0tT'

12 修改密码

alter user user() identified by 'martin';

13 再次登录 MySQL

mysql -uroot -p'martin'

14 关闭 MySQL

mysqladmin -S /tmp/mysql.sock -p shutdown