linux下安装mysql 的问题：不能启动

[鼓手]

按照安装文件中的安装帮助，按步骤执行安装完成后，无法启动：
相应的提示信息如下：

终端显示如下:
[root@localhost ~]# /usr/local/mysql/bin/mysqld_safe &
[1] 4501
[root@localhost ~]# Starting mysqld daemon with databases from /var/lib/mysql
STOPPING server from pid file /var/run/mysqld/mysqld.pid
060706 17:37:03 mysqld ended

[1]+ Done /usr/local/mysql/bin/mysqld_safe


日志 /var/log/mysqld.log 内容如下:
060706 17:37:02 mysqld started
060706 17:37:02 InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
060706 17:37:03 InnoDB: Starting log scan based on checkpoint at
InnoDB: log sequence number 0 43634.
InnoDB: Doing recovery: scanned up to log sequence number 0 43634
060706 17:37:03 InnoDB: Flushing modified pages from the buffer pool...
060706 17:37:03 InnoDB: Started; log sequence number 0 43634
060706 17:37:03 [ERROR] /usr/local/mysql/bin/mysqld: Can't create/write to file '/var/run/mysqld/mysqld.pid' (Errcode: 2)
060706 17:37:03 [ERROR] Can't start server: can't create PID file: No such file or directory
060706 17:37:03 mysqld ended




是怎么回事??

如何解决？

我是新手,第一次装mysql-4.1.20 到linux AS 4 上.

谢谢!

[Dong]

usr/local/bin/safe_mysqld &

[mathematician]

同意楼上，mysql没有linux的权限产生的错误

解决方法：
chown -R root /usr/local/mysql
chown -R mysql /usr/local/mysql/var
chgrp -R mysql /usr/local/mysql
然后启动试试：
/usr/local/mysql/bin/safe_mysqld --user=mysql &

[鼓手]

不行，还是报告一样的错误～

[efanlx]

权限问题
chown mysql:mysql /usr/local/mysql/var/mysql

[kingxianger]

我使用的过程也遇到了类似的问题，是mysql没有授权造成的