错误
2019-01-10T15:03:17.368118Z 0 [ERROR] Fatal error: Please read "Security" section of the manual to find out how to run mysqld as root!
2019-01-10T15:03:17.368146Z 0 [ERROR] Aborting
解决方案
加入启动参数--user=[username]
配置my.cnf，加入user=mysql意思是使用用户名mysql运行mysqld服务器
[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
#
# 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
#default-character-set = utf8
#character-set-server = utf8
port=3406
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/sunpy.err
pid-file=/var/run/mysqld/mysqld.pid
user=mysql
启动mysqld服务器带--user=mysql参数
mysqld --user=mysql --explicit_defaults_for_timestamp
查看下：
service mysqld status
[root@izuf6ea4rfo45y44oj74jhz ~]# service mysqld status
MySQL running (24617) [ OK ]
也可以通过启动日志去查看：tail -f /var/log/sunpy.err
像我启动的时候还报了，sunpy.err文件没有权限，打不开等。
chmod 777 /var/log/sunpy.err
