centos 7 YUM 在线安装版
1.wget http://repo.mysql.com/mysql57-community-release-el7-10.noarch.rpm 下载
2.rpm -Uvh mysql57-community-release-el7-10.noarch.rpm 安装rpm源
3.yum install -y mysql-community-server 取决于网速
4.systemctl start mysqld.service / service mysqld start 启动mysql
5.service mysqld status 查看启动状态
6.
7.grep 'temporary password' /var/log/mysqld.log 查看mysql临时密码
8.mysql -uroot -p 登录mysql
9.ALTER USER 'root'@'localhost' IDENTIFIED BY 'root';
修改密码-> 提示： ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
10. set global validate_password_policy=0;
11. set global validate_password_length=1; 重复9步骤--->修改密码
12.GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'yourpassword' WITH GRANT OPTION; 开放远程登录
FLUSH PRIVILEGES; 刷新配置
13.关闭防火墙
查看防火墙 systemctl status firewalld.service / service iptables status status/start/restart/stop --option
14.修改配置文件
vi /etc/my.cnf 编辑my.cnf / 没有手动创建文件
正确配置
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html
[mysqld]
character_set_server=utf8
#[client]
#default-character-set=utf8
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove leading # to turn on a very important data integrity option: logging
# changes to the binary log between backups.
# log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
15.systemctl status mysqld.service 查看mysql 状态 status/start/stop/restart -- option
Centos glib版安装
1.tar -zvxf mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz 解压
2.mv mysql-5.7.26-linux-glibc2.12-x86_64/* /usr/local/mysql 移动文件
3.groupadd user 添加用户
4.useradd -r -g mysql mysql 添加用户组
5.rpm -qa | grep libaio 检查libaio
6.yum -y install libaio 安装libaio
7.vi /etc/my.cnf 编辑my.cnf / 没有手动创建文件
[mysql]
# 设置mysql客户端默认字符集
default-character-set=utf8
socket=/var/lib/mysql/mysql.sock
[mysqld]
#skip-name-resolve
#设置3306端口
port = 3306
socket=/var/lib/mysql/mysql.sock
# 设置mysql的安装目录
basedir=/usr/local/mysql
# 设置mysql数据库的数据的存放目录
datadir=/usr/local/mysql/data
# 允许最大连接数
max_connections=200
# 服务端使用的字符集默认为8比特编码的latin1字符集
character-set-server=utf8
# 创建新表时将使用的默认存储引擎
#default-storage-engine=MyIsam
default-storage-engine=INNODB
#lower_case_table_name=1
max_allowed_packet=16M
8.mkdir data 创建目录
9.[root@localhost mysql]# chown -R mysql:mysql ./ 授权目录拥有者
10.[root@localhost mysql]# ./bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/ 初始化
11.成功图示
12.[root@localhost mysql]# cp ./support-files/mysql.server /etc/rc.d/init.d/mysqld
13.增加 mysqld 服务控制脚本执行权限：[root@localhost mysql]# chmod +x /etc/rc.d/init.d/mysqld
14.将 mysqld 服务加入到系统服务：[root@localhost mysql]# chkconfig --add mysqld
15.检查mysqld服务是否已经生效：[root@localhost mysql]# chkconfig --list mysqld
16.[root@localhost mysql]# service mysqld start 启动mysql 提示 err目录 pid不存在
Starting MySQL.Logging to '/usr/local/mysql/data/localhost.localdomain.err'.
2019-07-04T02:40:27.646818Z mysqld_safe Directory '/var/lib/mysql' for UNIX socket file don't exists.
ERROR! The server quit without updating PID file (/usr/local/mysql/data/localhost.localdomain.pid).
17.[root@localhost mysql]# mkdir /var/lib/mysql
[root@localhost mysql]# chown -R mysql /var/lib/mysql
18.再次启动
19.登录 提示command
20.进行软链接
ln -s /usr/local/mysql/bin/mysql /usr/bin
21.
22.先进行密码设置 ，
SET PASSWORD = PASSWORD('123456'); 设置初始密码。 不然操作不了数据库
23.提示 You must reset your password using ALTER USER statement before executing this statement.
24
25.use mysql 切到系统库
26.mysql> grant all privileges on *.* to root@"%" identified by "123456" with grant option; 授权远程登录
Query OK, 0 rows affected, 1 warning (0.00 sec)
27.mysql> flush privileges; 刷新
Query OK, 0 rows affected (0.00 sec)
28. systemctl status mysqld.service mysql 状态
29.systemctl status firewalld.service 关闭防火墙
30.
完毕。整理OK。亲测可用。注意以上安装都没有配置环境变量。虚拟学习而已
补充：
