MySQL守护程序问题

我的MySQL守护程序似乎有问题，一个世界可写配置文件被忽略：S

以下是我作为用户mysql运行mysqld时的输出：

bash-4.2$ mysqld
Warning: World-writable config file '/etc/mysql/my.cnf' is ignored
120730 17:57:34 [Note] Plugin 'FEDERATED' is disabled.
120730 17:57:34 InnoDB: The InnoDB memory heap is disabled
120730 17:57:34 InnoDB: Mutexes and rw_locks use GCC atomic builtins
120730 17:57:34 InnoDB: Compressed tables use zlib 1.2.5
120730 17:57:34 InnoDB: Using Linux native AIO
120730 17:57:34 InnoDB: Initializing buffer pool, size = 128.0M
120730 17:57:34 InnoDB: Completed initialization of buffer pool
InnoDB: Unable to lock ./ibdata1, error: 11

以下是我的“my.cnf”文件内容：

[client]
port            = 3306
socket          = /var/run/mysqld/mysqld.sock

[mysqld_safe]
socket          = /var/run/mysqld/mysqld.sock

[mysqld]

user        = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
datadir         = /var/mysql
tmpdir          = /tmp

key_buffer              = 16M
thread_stack            = 128K
thread_cache_size   = 8
#max_connections        = 100
#table_cache            = 64
#thread_concurrency     = 10
query_cache_limit   = 1M
query_cache_size        = 1024M
sort_buffer=512M
thread_concurrency=32
query_cache_type=2
tmp_table_size=1G

#log            = /var/log/mysql/mysql.log
#log_slow_queries   = /var/log/mysql/mysql-slow.log
#long_query_time = 2
#log-queries-not-using-indexes
#server-id              = 1
#log_bin                        = /var/log/mysql/mysql-bin.log
expire_logs_days        = 10
max_binlog_size         = 100M
#binlog_do_db           = include_database_name
#binlog_ignore_db   = include_database_name
#skip-innodb
# chroot = /var/lib/mysql/
[mysqldump]
quick
quote-names
max_allowed_packet  = 16M

[mysql]
#no-auto-rehash # faster start of mysql but no tab completition

[isamchk]
key_buffer              = 16M

真的不知道该去哪里，有人知道如何用mysqld输出详细的错误吗？或者更好地解决这个问题？有什么想法吗？谢谢大家：）

好的，世界可写配置文件已解决，我现在需要这些错误的帮助：

bash-4.2$ mysqld
120730 18:18:23 [Warning] Can't create test file /var/mysql/ks23085.lower-test
120730 18:18:23 [Warning] Can't create test file /var/mysql/ks23085.lower-test
120730 18:18:23 [Note] Plugin 'FEDERATED' is disabled.
mysqld: Table 'mysql.plugin' doesn't exist
120730 18:18:23 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
120730 18:18:23 InnoDB: The InnoDB memory heap is disabled
120730 18:18:23 InnoDB: Mutexes and rw_locks use GCC atomic builtins
120730 18:18:23 InnoDB: Compressed tables use zlib 1.2.5
120730 18:18:23 InnoDB: Using Linux native AIO
120730 18:18:23 InnoDB: Initializing buffer pool, size = 128.0M
120730 18:18:24 InnoDB: Completed initialization of buffer pool
120730 18:18:24  InnoDB: Operating system error number 13 in a file operation.
InnoDB: The error means mysqld does not have the access rights to
InnoDB: the directory.
InnoDB: File name ./ibdata1
InnoDB: File operation call: 'create'.
InnoDB: Cannot continue operation.

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我不知道这是否与目录未被正确允许或其他原因有关，还是与上次的问题相同S

my.cnf不应具有全局可写（即*6或**7）权限

这是一个安全漏洞。MySQL将忽略具有此权限设置的文件