Checking for corrupt, not cleanly closed and upgrade needing tables.
这个信息是一个提示，并非是错误信息。意思是“检查错误的数据表、没正确关闭的数据表以及需要升级的数据表”。 出现 php无法连接或其他各种问题，应该大体上与这个提示是没有关系的。
关于这个提示更多的一些说明：
# The following commands should be run when the server is up but in background
# where they do not block the server start and in one shell instance so that
# they run sequentially. They are supposed not to echo anything to stdout.
# If you want to disable the check for crashed tables comment "mycheck" out.
# (There may be no output to stdout inside the background process!)
在上述说明后，随即屏显：
Checking for corrupt, not cleanly closed and upgrade needing tables.
具体参考：/etc/mysql/debian-start
本文是中文版关于该信息的唯一正解，转载请保留出处网址连接。