MySQL Does Not Start

MySQL does not start, I get the following error message: Starting MySQL. ERROR! The server quit without updating PID file (/var/lib/mysql/site.mcstartup.net.pid).
This is the output in the .err file in /var/lib/mysql

140917 14:08:41 mysqld_safe mysqld from pid file /var/lib/mysql/site.mcstartup.net.pid ended
140917 14:24:46 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
2014-09-17 14:24:46 0 [Warning] Using unique option prefix key_buffer instead of key_buffer_size is deprecated and will be removed in a future release. Please use the full name instead.
2014-09-17 14:24:46 0 [Warning] Using unique option prefix join_buffer instead of join_buffer_size is deprecated and will be removed in a future release. Please use the full name instead.
2014-09-17 14:24:46 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2014-09-17 14:24:46 16128 [Note] Plugin 'FEDERATED' is disabled.
2014-09-17 14:24:46 16128 [Note] InnoDB: Using atomics to ref count buffer pool pages
2014-09-17 14:24:46 16128 [Note] InnoDB: The InnoDB memory heap is disabled
2014-09-17 14:24:46 16128 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2014-09-17 14:24:46 16128 [Note] InnoDB: Compressed tables use zlib 1.2.3
2014-09-17 14:24:46 16128 [Note] InnoDB: Using Linux native AIO
2014-09-17 14:24:46 16128 [Note] InnoDB: Using CPU crc32 instructions
/usr/sbin/mysqld: Can't create/write to file '/tmp/ibMJAjsh' (Errcode: 28 - No space left on device)
2014-09-17 14:24:46 7f226fb9b720  InnoDB: Error: unable to create temporary file; errno: 28
2014-09-17 14:24:46 16128 [ERROR] Plugin 'InnoDB' init function returned error.
2014-09-17 14:24:46 16128 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
2014-09-17 14:24:46 16128 [ERROR] Unknown/unsupported storage engine: InnoDB
2014-09-17 14:24:46 16128 [ERROR] Aborting

2014-09-17 14:24:46 16128 [Note] Binlog end
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'partition'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'ARCHIVE'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_METRICS'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_CMPMEM'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_CMP'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_LOCKS'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'INNODB_TRX'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'BLACKHOLE'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'MRG_MYISAM'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'CSV'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'MEMORY'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'MyISAM'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'sha256_password'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'mysql_old_password'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'mysql_native_password'
2014-09-17 14:24:46 16128 [Note] Shutting down plugin 'binlog'
2014-09-17 14:24:46 16128 [Note] /usr/sbin/mysqld: Shutdown complete

140917 14:24:46 mysqld_safe mysqld from pid file /var/lib/mysql/site.mcstartup.net.pid ended

cPanelMichael

September 17, 2014 18:38

Hello :) I noticed the following in the output you provided: [QUOTE]/usr/sbin/mysqld: Can't create/write to file '/tmp/ibMJAjsh' (Errcode: 28 - No space left on device)
Please ensure the /tmp partition and any other partition on your system is not at it's disk space limit. Thank you.

jca2

September 17, 2014 18:41

[quote="cPanelMichael, post: 1732141">Hello :) I noticed the following in the output you provided: Please ensure the /tmp partition and any other partition on your system is not at it's disk space limit. Thank you.
/tmp/ and /var/tmp both have 400M space available, is that too little?

triantech

September 17, 2014 18:44

Hey, Are there lots of files in /tmp ? Check if clearing unnecessary files could help this issue ! I have seen a case when there was enough disk space in /tmp yet lotta files in /tmp preventing the startup !

September 17, 2014 18:51

[quote="triantech, post: 1732162">Hey, Are there lots of files in /tmp ? Check if clearing unnecessary files could help this issue ! I have seen a case when there was enough disk space in /tmp yet lotta files in /tmp preventing the startup !
there is several files, though I'm not able to distinguish which ones are important or not. there are several hudnred sess_##### files. [COLOR="silver">- - - Updated - - - I actually deleted all of the sess files and was able to start my database, thanks.

September 17, 2014 19:55

Hey, Yes the sess files can be removed safely. Glad to know that your MySQL is back working :)

arunanson

December 04, 2014 18:43

2014-12-04 18:40:40 9407 [Note] InnoDB: Highest supported file format is Barracuda.
2014-12-04 18:40:40 9407 [Note] InnoDB: The log sequence numbers 6952730092 and 6952730092 in ibdata files do not match the log sequence number 7297651529 in the ib_logfiles!
2014-12-04 18:40:40 9407 [Note] InnoDB: Database was not shutdown normally!
2014-12-04 18:40:40 9407 [Note] InnoDB: Starting crash recovery.
2014-12-04 18:40:40 9407 [Note] InnoDB: Reading tablespace information from the .ibd files...
2014-12-04 18:40:41 9407 [Note] InnoDB: Restoring possible half-written data pages 
2014-12-04 18:40:41 9407 [Note] InnoDB: from the doublewrite buffer...
2014-12-04 18:40:41 9407 [Note] InnoDB: 128 rollback segment(s) are active.
2014-12-04 18:40:41 9407 [Note] InnoDB: Waiting for purge to start
2014-12-04 18:40:41 9407 [Note] InnoDB: 5.6.21 started; log sequence number 7297651529
2014-12-04 18:40:41 9407 [Note] Server hostname (bind-address): '*'; port: 3306
2014-12-04 18:40:41 9407 [Note] IPv6 is available.
2014-12-04 18:40:41 9407 [Note]   - '::' resolves to '::';
2014-12-04 18:40:41 9407 [Note] Server socket created on IP: '::'.
2014-12-04 18:40:41 9407 [ERROR] /usr/sbin/mysqld: Error writing file '/var/lib/mysql/newweb.cloudamaze.com.pid' (Errcode: 28 - No space left on device)
2014-12-04 18:40:41 9407 [ERROR] Can't start server: can't create PID file: No space left on device
141204 18:40:41 mysqld_safe Number of processes running now: 0
141204 18:40:41 mysqld_safe mysqld restarted

My .err shows the above. Also the file is 15MB of size. I cleared the file after downloading it locally. My httpd works only after manually issuing a service httpd restart command.

December 04, 2014 19:00

Hello :) Please check the available space and inodes on your system with commands such as:

df -h
df -i

Thank you.

December 04, 2014 19:57

Filesystem Size Used Avail Use% Mounted on /dev/xvda 94G 93G 0 100% / tmpfs 2.0G 108K 2.0G 1% /dev/shm /usr/tmpDSK 2.6G 5.7M 2.4G 1% /tmp this is the reply. What should i do?

December 04, 2014 20:21

Got it ok. I deleted the 'backups' folder content since i have a backup from my server provider. Now it makes space. :) Had to issue a manual httpd restart. WOrks fine. Thanks for the help anyway.

December 05, 2014 13:46

Yes, MySQL requires free space to operate properly. I am happy to see you were able to resolve the issue. Thank you.

MySQL Does Not Start

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