1、問題：

[[email protected] data]# /etc/init.d/mysql start
Starting MySQL...The server quit without updating PID file (/db/mysql/data/iZ94ax97oadZ.pid).                                                      [FAILED]
[[email protected] data]# /etc/init.d/mysql stop
MySQL server PID file could not be found!                  [FAILED]
 

沒有初始化許可權表

3、解決辦法

#cd /usr/local/mysql（進入mysql安裝目錄）
#chown -R mysql.mysql .
#su - mysql
$cd server
$scripts/mysql_install_db

4、解決問題詳細步驟:

[[email protected] /]# cd /usr/local/mysql
[[email protected] mysql]# chown -R mysql.mysql .
[[email protected] mysql]# su - mysql
[[email protected] ~]$ cd /usr/local/mysql
[
 
[email protected] mysql]$  scripts/mysql_install_db
Installing MySQL system tables...2016-06-16 21:43:31 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
OK

Filling help tables...2016-06-16 21:43:35 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
OK

To start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your system

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:

  ./bin/mysqladmin -u root password 'new-password'
  ./bin/mysqladmin -u root -h iZ94ax97oadZ password 'new-password'

Alternatively you can run:

  ./bin/mysql_secure_installation

which will also give you the option of removing the test
databases and anonymous user created by default.  This is
strongly recommended for production servers.

See the manual for more instructions.

You can start the MySQL daemon with:

  cd . ; ./bin/mysqld_safe &

You can test the MySQL daemon with mysql-test-run.pl

  cd mysql-test ; perl mysql-test-run.pl

Please report any problems at http://bugs.mysql.com/

The latest information about MySQL is available on the web at

  http://www.mysql.com

Support MySQL by buying support/licenses at http://shop.mysql.com

WARNING: Found existing config file ./my.cnf on the system.
Because this file might be in use, it was not replaced,
but was used in bootstrap (unless you used --defaults-file)
and when you later start the server.
The new default config file was created as ./my-new.cnf,
please compare it with your file and take the changes you need.

WARNING: Default config file /etc/my.cnf exists on the system
This file will be read by default by the MySQL server
If you do not want to use this, either remove it, or use the
--defaults-file argument to mysqld_safe when starting the server

[
 
[email protected] mysql]$ /usr/local/mysql/bin/mysqld_safe --user=mysql &
[1] 26320
[[email protected] mysql]$ 160616 21:43:58 mysqld_safe Logging to '/var/log/mysql/error.log'.
160616 21:43:58 mysqld_safe Starting mysqld daemon with databases from /db/mysql/data
rm: cannot remove `/usr/local/mysql/mysql.sock': Is a directory
160616 21:44:00 mysqld_safe mysqld from pid file /db/mysql/data/iZ94ax97oadZ.pid ended

[1]+  Done                    /usr/local/mysql/bin/mysqld_safe --user=mysql
[[email protected] mysql]$ 
[[email protected] mysql]$ /usr/local/mysql/bin/mysqld_safe --user=mysql &
[1] 27160
[[email protected] mysql]$ 160616 21:46:47 mysqld_safe Logging to '/var/log/mysql/error.log'.
160616 21:46:47 mysqld_safe Starting mysqld daemon with databases from /db/mysql/data

[[email protected] mysql]$ /etc/init.d/mysql status
MySQL running (27323)                                      [  OK  ]
[[email protected] mysql]$ /etc/init.d/mysql start
Starting MySQL                                             [  OK  ]
[[email protected] mysql]$