linux mysql 5.7的安装配置

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1、添加mysq组和用户

groupadd mysql

useradd -r -g mysql mysql

2、解压mysql安装包（mysql-5.7.18-linux-glibc2.5-x86_64.tar）

tar -xvf mysql-5.7.18-linux-glibc2.5-x86_64.tar

tar -zxvf mysql-5.7.18-linux-glibc2.5-x86_64.tar.gz

3、重命名

mv mysql-5.7.18-linux-glibc2.5-x86_64 mysql

4、更改mysql文件夹所属的组合用户

chown -R mysql /usr/local/mysql/

chgrp -R mysql /usr/local/mysql/

5、进入mysql目录初始化mysql

bin/mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/

6、配置mysql

vi /etc/my.cnf

将附件里的内容复制粘贴进去

附件内容如下：

[mysqld]sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES basedir = /usr/local/mysqldatadir = /usr/local/mysql/dataport = 3306socket = /tmp/mysql.sockcharacter-set-server=utf8skip-grant-tablesback_log = 300max_connections = 3000max_connect_errors = 50table_open_cache = 4096max_allowed_packet = 32M#binlog_cache_size = 4Mmax_heap_table_size = 128Mread_rnd_buffer_size = 16Msort_buffer_size = 16Mjoin_buffer_size = 16Mthread_cache_size = 16query_cache_size = 128Mquery_cache_limit = 4Mft_min_word_len = 8thread_stack = 512Ktransaction_isolation = REPEATABLE-READtmp_table_size = 128M#log-bin=mysql-binlong_query_time = 6server_id=1innodb_buffer_pool_size = 1Ginnodb_thread_concurrency = 16innodb_log_buffer_size = 16Minnodb_log_file_size = 512Minnodb_log_files_in_group = 3innodb_max_dirty_pages_pct = 90innodb_lock_wait_timeout = 120innodb_file_per_table = on[mysqldump]quickmax_allowed_packet = 32M[mysql]no-auto-rehashdefault-character-set=utf8safe-updates[myisamchk]key_buffer = 16Msort_buffer_size = 16Mread_buffer = 8Mwrite_buffer = 8M[mysqlhotcopy]interactive-timeout[mysqld_safe]open-files-limit = 8192

注意事项：

basedir = /usr/local/mysqldatadir = /usr/local/mysql/datasocket = /tmp/mysql.sock

这几个目录或文件如果不存在，你需要主动创建好，否则会报错。

这个配置文件中有这么一句话skip-grant-tables 是跳过权限和密码验证的；等后面修改完root密码时，需要把这句话注释掉。

7、mysql命令

cp -a /usr/local/mysql/suport-files/mysql.server /etc/init.d/mysql

service mysql start 启动服务

service mysql status 查看mysql状态

service mysql stop 停止服务

service mysql restart 重启服务

8、启动服务登入系统

./usr/local/mysql/bin/mysql -uroot -p

9、修改root用户密码

//查看所有用户 use mysql; select * from user \G;

UPDATE mysql.user SET authentication_string = PASSWORD('mypassword') WHERE User = 'root' AND Host = 'localhost';

FLUSH PRIVILEGES;

10、退出mysql

exit

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