mysql 8.0.18 安装配置方法图文教程(linux)
本文记录了linux mysql 8.0.18 安装配置图文教程，供大家参考，具体内容如下
1、官网安装包下载地址
2、我这里通过xftp将安装包上传至Linux服务器
3.解压
解压命令：tar -xvf mysql-8.0.18-linux-glibc2.12-x86_64.tar
继续解压需要的那一个
命令： tar -xvf mysql-8.0.18-linux-glibc2.12-x86_64.tar.xz
重命名并移动到合适的路径
重命名 ： mv mysql-8.0.18-linux-glibc2.12-x86_64 mysql
移动：
4.在/usr/local/mysql下创建data文件夹
# mkdir data
5.初始化数据库，自动生成密码 需记录 等下要用
# bin/mysqld --initialize --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data
ps：中间遇到一个坑，初始化数据库时候报了错
具体错误为：bin/mysqld: error while loading shared libraries: libaio.so.1: cannot open shared object file: No such file or directory
解决方法为：yum install libaio-devel.x86_64 原因是缺少了libaio这个东西 安装就完事了
再次执行初始化命令
得到初始化密码，需要记下，一会会用到
6.修改/usr/local/mysql 当前目录的用户
# chown -R root:root ./ # chown -R mysql:mysql data
7.复制my-default.cnf这个文件到etc/my.cnf去
具体命令为：
# cd support-files/ # touch my-default.cnf # chmod 777 ./my-default.cnf # cd ../ # cp support-files/my-default.cnf /etc/my.cnf
8.完了之后配置my.cnf
vim /etc/my.cnf
内容：
[mysqld] # 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 # These are commonly set, remove the # and set as required. basedir = /usr/local/mysql datadir = /usr/local/mysql/data socket = /tmp/mysql.sock log-error = /usr/local/mysql/data/error.log pid-file = /usr/local/mysql/data/mysql.pid tmpdir = /tmp port = 5186 #lower_case_table_names = 1 # server_id = ..... # socket = ..... #lower_case_table_names = 1 max_allowed_packet=32M default-authentication-plugin = mysql_native_password #lower_case_file_system = on #lower_case_table_names = 1 log_bin_trust_function_creators = ON # 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 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
如果后期mysql运行报错，可以直接到log-error = /usr/local/mysql/data/error.log目录下直接查看错误日志
命令:cat /usr/local/mysql/data/error.log
9.开机自启，进入/usr/local/mysql/support-files进行设置
# cd support-files/ # cp mysql.server /etc/init.d/mysql # chmod +x /etc/init.d/mysql
10.注册服务
# chkconfig --add mysql
11.查看是否成功
12.etc/ld.so.conf要配置路径，不然报错
# vim /etc/ld.so.conf
添加如下内容:
/usr/local/mysql/lib
13.配置环境变量
# vim /etc/profile # source /etc/profile
添加如下内容：
#MYSQL ENVIRONMENT export PATH=$PATH:/usr/local/mysql/bin:/usr/local/mysql/lib
14.登录 需要用到上面的生成的密码
#启动mysql服务 [root@localhost bin]# service mysql start Starting MySQL.Logging to '/usr/local/mysql/data/error.log'. .. SUCCESS! [root@localhost bin]# #修改mysql密码 mysql> alter user 'root'@'localhost' identified by '123456'; Query OK, 0 rows affected (0.02 sec) mysql>
ps：第二个坑，在启动时出现错误 详情为：
Starting MySQL...The server quit without updating PID file [FAILED]cal/mysql/data/mysql.pid).
该错误翻了一下午，绕了一大圈，最终问题是my.cnf文件配置问题，千万不能以为加了#就是注释掉了，自己检查了n遍，觉得没有错，结果就是不行，没有办法找了一份另一台服务器的my.cnf配置，复制替换稍加修改，解决问题。
大功告成！可以使用可视化工具进行数据库连接了。
安装完成。
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