我刚刚升级了我的系统，但Mysql没有启动：
120319 15:20:39 [Note] Plugin 'FEDERATED' is disabled.
mysqld: Table 'mysql.plugin' doesn't exist
120319 15:20:39 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
120319 15:20:39 InnoDB: Initializing buffer pool, size = 8.0M
120319 15:20:39 InnoDB: Completed initialization of buffer pool
120319 15:20:39 InnoDB: Started; log sequence number 0 43665
120319 15:20:39 [ERROR] Can't start server : Bind on unix socket: No such file or directory
120319 15:20:39 [ERROR] Do you already have another mysqld server running on socket: /var/run/mysqld/mysqld.sock ?
120319 15:20:39 [ERROR] Aborting
所以我被要求运行myslq_upgrade，但系统上没有...
任何帮助？
答案 0 :(得分：0)
最后，我不得不手动删除一些软件包，重命名旧的数据库和配置文件，重新安装并运行，但仍然没有mysql_upgrade ......
无论如何，谢谢你的帮助
答案 1 :(得分：0)
我发现在Amazon Linux 1 AMI上已安装它，但不在PATH中。我做了一个sudo find / -type f -name mysql_upgrade，它在/usr/libexec/mysql55/mysql_upgrade中。