Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist

[root@localhost download]# service mysqld start

Redirecting to /bin/systemctl start mysqld.service

Job for mysqld.service failed because a timeout was exceeded. See "systemctl status mysqld.service" and "journalctl -xe" for details.

解决了一个安装包的问题，然后安装后mysql起不来啊

more /etc/my.cnf |grep -v ^#

[root@localhost ~]#more /etc/my.cnf |grep -v ^#

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock

symbolic-links=0

sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

配置看起来都正常

systemctl status -l mysqld

找了错误日志/var/log/mysqld.log

CGroup: /system.slice/mysqld.service
├─5472 /bin/sh /usr/bin/mysqld_safe
└─5638 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --log-error=/var/log/mysqld.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sock

Nov 04 17:21:49 localhost.localdomain systemd[1]: mysqld.service holdoff time over, scheduling restart.
Nov 04 17:21:49 localhost.localdomain systemd[1]: Starting MySQL Community Server...
Nov 04 17:21:49 localhost.localdomain mysqld_safe[5472]: 161104 17:21:49 mysqld_safe Logging to '/var/log/mysqld.log'.
Nov 04 17:21:50 localhost.localdomain mysqld_safe[5472]: 161104 17:21:50 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
Nov 04 17:21:50 localhost.localdomain systemd[1]: Started MySQL Community Server.

tail 下日志然后搜索了下这个错误

Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist

使用脚本初始化数据库，无效
scripts/mysql_install_db --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql --ldata=/var/lib/mysql

权限不足，然后加了2个目录的权限

chown -R mysql /var/lib/mysql

chgrp -R mysql /var/lib/mysql

终于进来了

[root@localhost ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.6.34 MySQL Community Server (GPL)

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