CentOS 7 安装 MySQL 无法启动，求指教

以前一直用 Debian 系，照着官方文档一路装过来都没啥问题，最近想换口味装了个 CentOS 7 ，结果一个 MySQL 就搞了一晚上没搞定。。

大致过程，从官网下了个 Yum Repository

# rpm -ivh mysql57-community-release-el7-8.noarch.rpm
# yum update
# yum install mysql-community-server

一路顺利，然后启动

# systemctl start mysqld
Job for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details.

报错，照着提示看了下发现并不能看懂。。对着一些信息搜索也无果，求教是什么原因

# systemctl status mysqld.service
  mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: failed (Result: start-limit) since Tue 2016-05-10 08:03:40 CST; 1min 11s ago
  Process: 5126 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=1/FAILURE)
  Process: 5104 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)

May 10 08:03:40 FVCKGFW systemd[1]: Failed to start MySQL Server.
May 10 08:03:40 FVCKGFW systemd[1]: Unit mysqld.service entered failed state.
May 10 08:03:40 FVCKGFW systemd[1]: mysqld.service failed.
May 10 08:03:40 FVCKGFW systemd[1]: mysqld.service holdoff time over, scheduling restart.
May 10 08:03:40 FVCKGFW systemd[1]: start request repeated too quickly for mysqld.service
May 10 08:03:40 FVCKGFW systemd[1]: Failed to start MySQL Server.
May 10 08:03:40 FVCKGFW systemd[1]: Unit mysqld.service entered failed state.
May 10 08:03:40 FVCKGFW systemd[1]: mysqld.service failed.

# journalctl -xe
-- Subject: Unit mysqld.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has begun starting up.
May 10 08:03:40 FVCKGFW mysqld[5126]: Initialization of mysqld failed: 0
May 10 08:03:40 FVCKGFW systemd[1]: mysqld.service: control process exited, code=exited status=1
May 10 08:03:40 FVCKGFW systemd[1]: Failed to start MySQL Server.
-- Subject: Unit mysqld.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has failed.
--
-- The result is failed.
May 10 08:03:40 FVCKGFW systemd[1]: Unit mysqld.service entered failed state.
May 10 08:03:40 FVCKGFW systemd[1]: mysqld.service failed.
May 10 08:03:40 FVCKGFW systemd[1]: mysqld.service holdoff time over, scheduling restart.
May 10 08:03:40 FVCKGFW systemd[1]: start request repeated too quickly for mysqld.service
May 10 08:03:40 FVCKGFW systemd[1]: Failed to start MySQL Server.
-- Subject: Unit mysqld.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit mysqld.service has failed.
--
-- The result is failed.
May 10 08:03:40 FVCKGFW systemd[1]: Unit mysqld.service entered failed state.
May 10 08:03:40 FVCKGFW systemd[1]: mysqld.service failed.