mysql数据库新安装无法启动

MySQL数据库源码编译之后，启动失败具体报错日志如下:

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2018-04-13 23:45:46 67547 [Note] Plugin 'FEDERATED' is disabled.
/usr/local/mysql/bin/mysqld: Table 'mysql.plugin' doesn't exist
2018-04-13 23:45:46 67547 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
2018-04-13 23:45:46 67547 [Note] InnoDB: Using atomics to ref count buffer pool pages
2018-04-13 23:45:46 67547 [Note] InnoDB: The InnoDB memory heap is disabled
2018-04-13 23:45:46 67547 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2018-04-13 23:45:46 67547 [Note] InnoDB: Memory barrier is not used
2018-04-13 23:45:46 67547 [Note] InnoDB: Compressed tables use zlib 1.2.3
2018-04-13 23:45:46 67547 [Note] InnoDB: Using CPU crc32 instructions
2018-04-13 23:45:46 67547 [Note] InnoDB: Initializing buffer pool, size = 128.0M
2018-04-13 23:45:46 67547 [Note] InnoDB: Completed initialization of buffer pool
2018-04-13 23:45:46 67547 [Note] InnoDB: Highest supported file format is Barracuda.
2018-04-13 23:45:46 67547 [Note] InnoDB: Log scan progressed past the checkpoint lsn 49463
2018-04-13 23:45:46 67547 [Note] InnoDB: Database was not shutdown normally!
2018-04-13 23:45:46 67547 [Note] InnoDB: Starting crash recovery.
2018-04-13 23:45:46 67547 [Note] InnoDB: Reading tablespace information from the .ibd files...
2018-04-13 23:45:46 67547 [Note] InnoDB: Restoring possible half-written data pages 
2018-04-13 23:45:46 67547 [Note] InnoDB: from the doublewrite buffer...
InnoDB: Doing recovery: scanned up to log sequence number 1600607
2018-04-13 23:45:46 67547 [Note] InnoDB: Starting an apply batch of log records to the database...
InnoDB: Progress in percent: 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 
InnoDB: Apply batch completed
2018-04-13 23:45:46 67547 [Note] InnoDB: 128 rollback segment(s) are active.
2018-04-13 23:45:46 67547 [Note] InnoDB: Waiting for purge to start
2018-04-13 23:45:46 67547 [Note] InnoDB: 5.6.39 started; log sequence number 1600607
2018-04-13 23:45:46 67547 [Note] Server hostname (bind-address): '*'; port: 3306
2018-04-13 23:45:46 67547 [Note] IPv6 is available.
2018-04-13 23:45:46 67547 [Note]   - '::' resolves to '::';
2018-04-13 23:45:46 67547 [Note] Server socket created on IP: '::'.
2018-04-13 23:45:46 67547 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.user' doesn't exist

解决方法：
重新初始化数据库即可
shell> /usr/local/mysql/scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data`
之后数据库启动成功
shell> /etc/init.d/mysqld start
Starting MySQL. SUCCESS!

设置root用户登陆密码：
shell> mysqladmin -uroot -p password '123456'
Enter password:【默认密码为空直接回车即可】
Warning: Using a password on the command line interface can be insecur

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