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#Just cause 2 mods error establishing a database connection full
#Just cause 2 mods error establishing a database connection registration
#Just cause 2 mods error establishing a database connection free

The message about FEDERATED disabled is not an error.

Thanks to: Ruben Schade comment Plugin 'FEDERATED' is disabled. The default is yes/1, and is acceptable for production.Īccording to the docs, this command is deprecated, and will be removed in MySQL versions above 5.6 (and I assume MariaDB): This isn’t really an error, just an indication that InnoDB is using the system’s internal memory allocator instead of its own. The "diminishing returns" means that if you need more swap space than twice your RAM size, you'd better add more RAM as Hard Disk Drive (HDD) access is about 10³ slower then RAM access, so something that would take 1 second, suddenly takes more then 15 minutes! And still more then a minute on a fast Solid State Drive (SSD). Note that bigger is not necessarily better! From the Ubuntu guide: In the example above, Swap: 0 indicates no swapfile.

#Just cause 2 mods error establishing a database connection free

You can check to see if you have one configured by running free -m. In my case the underlying issue was that I'd neglected to configure a swapfile. Note: you may have to gunzip and search through archived logs if the error occurred before the logs were rotated by cron. Init: mysql post-start process (21997) terminated with status 1 Init: mysql main process (21996) terminated with status 1 Init: mysql main process ended, respawning Init: mysql main process (15452) killed by KILL signal usr/sbin/mysqld: Shutdown completeĬhecking /var/log/syslog and searching for mysql yields: Out of memory: Kill process 15452 (mysqld) score 93 or sacrifice child mysqld is shutting down, which in this context, really means failing to restart!.Unknown/unsupported storage engine: InnoDB

#Just cause 2 mods error establishing a database connection registration

Plugin 'InnoDB' registration as a STORAGE ENGINE failed.

Plugin 'InnoDB' init function returned error.

InnoDB can't start without enough memory.

InnoDB: Fatal error: cannot allocate memory for the buffer pool My reading of the error (timestamps removed) is: The logs showed the same error that the OP posted. I had exactly this problem on the very first system I set up on EC2, characterised by the wordpress site hosted there going down on occasion with "Error establishing database connection".

mysqld service stops once a day on ec2 server.

Mysql can't restart because it's out of memory, check that you have an appropriate swapfile configured.ĭidn't help? If that's not your issue, more qualified questions to continue research are:

#Just cause 2 mods error establishing a database connection full

Please use the full name instead.ġ40919 10:48:28 Plugin 'FEDERATED' is disabled.ġ40919 10:48:28 InnoDB: The InnoDB memory heap is disabledġ40919 10:48:28 InnoDB: Mutexes and rw_locks use GCC atomic builtinsġ40919 10:48:28 InnoDB: Compressed tables use zlib 1.2.3.4 InnoDB: mmap(137363456 bytes) failed errno 12ġ40919 10:48:28 InnoDB: Completed initialization of buffer poolġ40919 10:48:28 InnoDB: Fatal error: cannot allocate memory for the buffer poolġ40919 10:48:28 Plugin 'InnoDB' init function returned error.ġ40919 10:48:28 Plugin 'InnoDB' registration as a STORAGE ENGINE failed.ġ40919 10:48:28 Unknown/unsupported storage engine: InnoDBġ40919 10:48:28 /usr/sbin/mysqld: Shutdown completeġ40919 10:48:28 Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Please use the full name instead.ġ40919 10:48:27 Plugin 'FEDERATED' is disabled.ġ40919 10:48:27 InnoDB: The InnoDB memory heap is disabledġ40919 10:48:27 InnoDB: Mutexes and rw_locks use GCC atomic builtinsġ40919 10:48:27 InnoDB: Compressed tables use zlib 1.2.3.4ġ40919 10:48:28 InnoDB: Initializing buffer pool, size = 128.0M 140919 10:48:27 Using unique option prefix myisam-recover instead of myisam-recover-options is deprecated and will be removed in a future release. Website works for some time and then I get MySQL shutdown completely after a couple of hours. I have this error log from MySQL, any idea?