mysql5.7.21源码安装

1.下载安装包

MySQL 官方下载地址：https://dev.mysql.com/downloads/mysql/ 

MySQL 5.7官方安装文档：https://dev.mysql.com/doc/refman/5.7/en/binary-installation.html

 

2.安装依赖包

MySQL依赖于libaio 库。如果这个库没有在本地安装，数据目录初始化和后续的服务器启动步骤将会失败。请使用适当的软件包管理器进行安装。例如，在基于Yum的系统上：

shell> yum search libaio 

shell> yum install libaio

 

3.创建一个mysql用户和组

shell> groupadd mysql

shell> useradd -r -g mysql -s /bin/false mysql

 

4.解压到指定目录

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

 

5.配置数据库目录

数据目录：/usr/local/mysql/data 

参数文件my.cnf：/usr/local/mysql/etc/my.cnf 

错误日志log-error：/usr/local/mysql/log/mysql_error.log 

二进制日志log-bin：/usr/local/mysql/log/mysql_bin.log 

慢查询日志slow_query_log_file：//usr/local/mysql/log/mysql_slow_query.log 

套接字socket文件：/usr/local/mysql/run/mysql.sock 

pid文件：/usr/local/mysql/run/mysql.pid 

 

shell> mkdir -p /usr/local/mysql/{data,log,etc,run}

shell> chown -R mysql:mysql /usr/local/mysql 

shell> chmod 750 /usr/local/mysql/{data,log,etc,run}

 

6.配置my.cnf文件

在/usr/local/mysql/etc/下创建my.cnf文件，加入如下参数，其他参数根据需要配置

[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

 

7.设置临时密码

grep 'temporary password' /usr/local/mysql/log/mysql_error.log

 

8.初始化

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

 

9.将mysqld设置开启自动启动

 

cp /usr/local/mysql/support-files/mysql.server    /etc/init.d/mysqld

chkconfig --add mysqld

 

10.复制配置文件my.cnf

 

cp /usr/local/mysql/etc/my.cnf    /etc/my.cnf  (提示覆盖就覆盖)

 

11.启动mysql服务

 

 

 

12.进入mysql

cd /usr/local/mysql/bin 

./ mysql -u root -p(临时密码)

 

13.修改密码

重新设置密码

SET PASSWORD FOR'root'@localhost=PASSWORD('admin');   #对应的换成你自己的密码即可

14、开启远程权限

 

grant all privileges on *.* to '新用户名'@'%' identified by '新密码';

flush privileges;

 

15.配置环境变量

 

vim /etc/profile

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

source /etc/profile

 

实战备注：

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

 

报错解决方案

./bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory

yum install -y libaio  //安装后在初始化就OK了

 

cRowiC5?_mo_

linux mysql password

set password for 'root'@'localhost'=password('Jackphp123!')

 

错误提示：

 

[root@localhost support-files]# ./mysql.server start

 

Starting MySQL.2017-07-10T07:02:40.832128Z mysqld_safe error: log-error set to ‘/var/log/mariadb/mariadb.log‘, however file don‘t exists. Create writable for user ‘mysql‘.

 ERROR! The server quit without updating PID file (/var/lib/mysql/localhost.localdomain.pid).

 解决方案：

 

因为前期未创建 /var/log/mariadb/mariadb.log‘ 下面的 mariadb目录 ，mariadb.log 需要手工创建，完成 启动成功。

缺少libtinfo.so.5解决办法

在CentOS下，输入命令

ln -s /usr/lib/libncurses.so.5 /usr/lib/libtinfo.so.5 

ln -s /usr/lib/libncurses.so.5 /lib/libtinfo.so.5  

安装mysql后登录提示：ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password:yes)

解决如下：

1.停止mysql服务

systemctl stop mysqld.service

 

2.修改配置文件无密码登录

vim  /etc/my.cnf

在最后加上

skip-grant-tables

保存

3.启动mysql

systemctl  start  mysqld.service

 

4.登录mysql

mysql -u root

注意这里不要加-p

5.修改密码，mysql5.7用此语法

use mysql;

update mysql.user set authentication_string=password('123456') where user='root' ;  

6.回到第二部把刚加的那句删掉

保存，重启mysql就可以了

 

默认配置文件路径： 

配置文件：/etc/my.cnf 

日志文件：/var/log//var/log/mysqld.log 

服务启动脚本：/usr/lib/systemd/system/mysqld.service 

socket文件：/var/run/mysqld/mysqld.pid

 

错误原因：升级了mysql没有update相应的mysql系统表结构，update完毕后重启既可解决