1、准备工作
代码语言：javascript复制wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz
tar -xzvf mysql-5.7.28-linux-glibc2.12-x86_64.tar.gz -C /app/
cd /app/
mv mysql-5.7.28-linux-glibc2.12-x86_64 mysql
mkdir /app/mysql/{data,logs}
groupadd mysql
useradd -g mysql mysql
chown mysql:mysql /app/mysql -R2、配置文件修改
代码语言：javascript复制[client]
port = 3306
socket = /tmp/mysql.sock
default-character-set = utf8
[mysqld]
port = 3306
socket = /tmp/mysql.sock
basedir = /app/mysql
datadir = /app/mysql/data
pid-file = /app/mysql/mysql.pid
user = mysql
bind-address = 0.0.0.0
server-id = 1
init-connect = 'SET NAMES utf8'
character-set-server = utf8
log_timestamps=SYSTEM
skip-name-resolve
back_log = 300
max_connections = 613
max_connect_errors = 6000
open_files_limit = 65535
table_open_cache = 256
max_allowed_packet = 500M
binlog_cache_size = 1M
max_heap_table_size = 8M
tmp_table_size = 32M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
sort_buffer_size = 8M
join_buffer_size = 8M
key_buffer_size = 16M
thread_cache_size = 16
query_cache_type = 1
query_cache_size = 16M
query_cache_limit = 2M
ft_min_word_len = 4
log_bin = mysql-bin
binlog_format = mixed
expire_logs_days = 7
log_error = /app/mysql/logs/mysql-error.log
slow_query_log = 1
long_query_time = 1
slow_query_log_file = /app/mysql/logs/mysql-slow.log
performance_schema = 0
explicit_defaults_for_timestamp
skip-external-locking
default_storage_engine = InnoDB
innodb_file_per_table = 1
innodb_open_files = 500
innodb_buffer_pool_size = 128M
innodb_write_io_threads = 4
innodb_read_io_threads = 4
innodb_thread_concurrency = 0
innodb_purge_threads = 1
innodb_flush_log_at_trx_commit = 2
innodb_log_buffer_size = 2M
innodb_log_file_size = 32M
innodb_log_files_in_group = 3
innodb_max_dirty_pages_pct = 90
innodb_lock_wait_timeout = 120
bulk_insert_buffer_size = 8M
myisam_sort_buffer_size = 16M
myisam_max_sort_file_size = 10G
myisam_repair_threads = 1
interactive_timeout = 28800
wait_timeout = 28800
[mysqldump]
quick
max_allowed_packet = 500M
[myisamchk]
key_buffer_size = 16M
sort_buffer_size = 8M
read_buffer = 4M
write_buffer = 4M3、数据库初始化
代码语言：javascript复制cd /app/mysql/
bin/mysqld --initialize --user=mysql --basedir=/app/mysql --datadir=/app/mysql/data --innodb_undo_tablespaces=3 --explicit_defaults_for_timestamp
cp -a /app/mysql/support-files/mysql.server /etc/init.d/mysql
echo "export PATH=/app/mysql/bin:$PATH" >> /etc/profile
source /etc/profile
# 启动mysql
/etc/init.d/mysql start
登录的临时密码在error文件中（/app/mysql/logs/mysql-error.log）
egrep root@localhost /app/mysql/logs/mysql-error.log
##
porary password is generated for root@localhost: Jm=%mM7w)UBq
##
# 使用日志中的临时密码（Jm=%mM7w)UBq）登录mysql
mysql -u root -p
# 设置root密码：
mysql>set password for root@localhost = password('root');
# 刷新权限
flush privileges;
