MySQL 5.5.9无法启动

Question

I installed mysql version 5.5.9 on my mac and I tried to start it using this command :

sudo /usr/local/mysql/support-files/mysql.server start

mysql didn't start with this command. I checked the localhost.err file in data directory and it was like this :

110227 22:51:14 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
110227 22:51:14 [Warning] Setting lower_case_table_names=2 because file system for /usr/local/mysql/data/ is case insensitive
110227 22:51:14 [Note] Plugin 'FEDERATED' is disabled.
/usr/local/mysql/bin/mysqld: Table 'mysql.plugin' doesn't exist
110227 22:51:14 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
110227 22:51:14 InnoDB: The InnoDB memory heap is disabled
110227 22:51:14 InnoDB: Mutexes and rw_locks use GCC atomic builtins
110227 22:51:14 InnoDB: Compressed tables use zlib 1.2.3
110227 22:51:14 InnoDB: Initializing buffer pool, size = 128.0M
110227 22:51:14 InnoDB: Completed initialization of buffer pool
110227 22:51:14  InnoDB: Log file ./ib_logfile0 did not exist: new to be created
InnoDB: Setting log file ./ib_logfile0 size to 5 MB
InnoDB: Database physically writes the file full: wait...
110227 22:51:14  InnoDB: Log file ./ib_logfile1 did not exist: new to be created
InnoDB: Setting log file ./ib_logfile1 size to 5 MB
InnoDB: Database physically writes the file full: wait...
110227 22:51:15 InnoDB: highest supported file format is Barracuda.
InnoDB: The log sequence number in ibdata files does not match
InnoDB: the log sequence number in the ib_logfiles!
110227 22:51:15  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...
110227 22:51:15  InnoDB: Waiting for the background threads to start
110227 22:51:16 InnoDB: 1.1.5 started; log sequence number 1595916
110227 22:51:16 [ERROR] /usr/local/mysql/bin/mysqld: unknown option '--skip-locking'
110227 22:51:16 [ERROR] Aborting

110227 22:51:16  InnoDB: Starting shutdown...
110227 22:51:16  InnoDB: Shutdown completed; log sequence number 1595916
110227 22:51:16 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete

110227 22:51:16 mysqld_safe mysqld from pid file /usr/local/mysql/data/localhost.pid ended

I deleted the two ib_log files, I changed my.cnf file and I got nothing.

Answer 1

I had this same issue on mac, I have other MySQL instances installed from MAMP and XAMP.

Do a locate in terminal: locate my.cnf

Take note of any other my.cnf files not located in your AMPPS directory.

I found that when i removed /private/etc/my.cnf , MySQL started with no issues.

sudo mv /private/etc/my.cnf /private/etc/my-old.cnf

Answer 2

--skip-locking was removed in MySQL 5.5. See here .

Edit your my.cnf file and change "skip-locking" to "skip-external-locking".

Answer 3

1 ) in the terminal , launch command : mysql_upgrade ( to create the tables that are non existent )

2 ) edit /etc/my.cnf , comment out the --skip-locking statement

that's all , happy SQLing