Initialization of the server's UUID failed because it could not be read from the auto.cnf file. If this is a new server, the initialization failed because it was not possible to generate a new UUID.
解决：
mv auto.cnf auto.cnf.back # 备份配置文件
/etc/init.d/mysql start # 重启服务器
问题：
[ERROR] [MY-011011] [Server] Failed to find valid data directory.
2019-01-16T02:03:14.048226Z 0
[ERROR] [MY-010020] [Server] Data Dictionary initialization failed.
解决：
在8.0后 不需要手动创建 data 目录，会自动创建
问题：
[Warning] [MY-010091] [Server] Can't create test file /data/server/mysql-8.0.12/data/localhost.lower-test
[Warning] [MY-010159] [Server] Setting lower_case_table_names=2 because file system for /data/server/mysql-8.0.12/data/ is case insensitive
[ERROR] [MY-010172] [Server] failed to set datadir to /data/server/mysql-8.0.12/data/
[ERROR] [MY-010119] [Server] Aborting
解决：
还好手动敲命令吧，复制命令。。。的坑，好大
错误：
[ERROR] [MY-010457] [Server] --initialize specified but the data directory has files in it. Aborting.
[ERROR] [MY-010119] [Server] Aborting
解决：
数据目录已有文件存在，不能初始化，删除后就好
问题：
mysql> alter user 'yourshadow'@'192.168.56.%' identified with mysql_native_password;
ERROR 1396 (HY000): Operation ALTER USER failed for 'yourshadow'@'192.168.56.%'
解决：
名字与主机名要一致，如果不存在这样的用户，则直接报错
问题：
SQLSTATE[HY000] [2054] The server requested authentication method unknown to the client
分析：这是在8.0版本后，用户的密码加密规则修改了，需要修正，如下方法修改为之前的加密方式
解决：
alter user 'yourshadow'@'%' identified with mysql_native_password by '123456';