mysql 5.7官方安裝文件：
mysql依賴於libaio 庫。如果這個庫沒有在本地安裝，資料目錄初始化和後續的伺服器啟動步驟將會失敗。請使用適當的軟體包管理器進行安裝。例如，在基於yum的系統上：
shell> yum search libaio
shell> yum install libaio
shell> groupadd mysql
shell> useradd -r -g mysql -s /bin/false mysql
shell> tar -zxvf mysql-5.7.21-linux-glibc2.12-x86_64.tar.gz -c /usr/local
shell> cd /usr/local
shell> mv mysql-5.7.21-linux-glibc2.12-x86_64 mysql
資料目錄：/usr/local/mysql/data
引數檔案my.cnf：/usr/local/mysql/etc/my.cnf
錯誤日誌log-error：/usr/local/mysql/log/mysql_error.log
二進位制日誌log-bin：/usr/local/mysql/log/mysql_bin.log
慢查詢日誌slow_query_log_file：//usr/local/mysql/log/mysql_slow_query.log
套接字socket檔案：/usr/local/mysql/run/mysql.sock
pid檔案：/usr/local/mysql/run/mysql.pid
shell> mkdir -p /usr/local/mysql/
shell> chown -r mysql:mysql /usr/local/mysql
shell> chmod 750 /usr/local/mysql/
在/usr/local/mysql/etc/下建立my.cnf檔案，加入如下引數，其他引數根據需要配置
[client]
port = 3306
socket = /usr/local/mysql/run/mysql.sock
[mysqld]
port = 3306
socket = /usr/local/mysql/run/mysql.sock
pid_file = /usr/local/mysql/run/mysql.pid
datadir = /usr/local/mysql/data
default_storage_engine = innodb
max_allowed_packet = 128m
max_connections = 2048
open_files_limit = 65535
skip-name-resolve
lower_case_table_names=1
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init_connect='set names utf8mb4'
innodb_buffer_pool_size = 128m
innodb_log_file_size = 128m
innodb_file_per_table = 1
innodb_flush_log_at_trx_commit = 0
key_buffer_size = 16m
log-error = /usr/local/mysql/log/mysql_error.log
log-bin = /usr/local/mysql/log/mysql_bin.log
slow_query_log = 1
slow_query_log_file = /usr/local/mysql/log/mysql_slow_query.log
long_query_time = 5
tmp_table_size = 16m
max_heap_table_size = 16m
query_cache_type = 0
query_cache_size = 0
server-id=1
grep 'temporary password' /usr/local/mysql/log/mysql_error.log
/usr/local/mysql/bin/mysqld --user=mysql --basedir=/usr/local/mysql--datadir=/usr/local/mysql/data --initialize
9.將mysqld設定開啟自動啟動
cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
chkconfig --add mysqld
10.複製配置檔案my.cnf
cp /usr/local/mysql/etc/my.cnf /etc/my.cnf (提示覆蓋就覆蓋)
11.啟動mysql服務
service mysql start
12.進入mysql
cd /usr/local/mysql/bin
./ mysql -u root -p(臨時密碼)
13.修改密碼
重新設定密碼
set password for'root'@localhost=password('admin'); #對應的換成你自己的密碼即可
14、開啟遠端許可權
grant all privileges on *.* to '新使用者名稱'@'%' identified by '新密碼';
flush privileges;
15.配置環境變數
vim /etc/profile
export path=/usr/local/mysql/bin:$path
source /etc/profile
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