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MariaDB keeps crashing on some wordpress posts

Hi there.

I have a mariadb server with 2 wordpress blogs. Sometimes, when an admin posts something in it, it crashes.

I've updated it, and it still happens.

Not sure what else Should I do.

Here's the log.

http://pastebin.com/Sp6fsN4P

Thanks for the help.

Answer Answered by Guillaume Lefranc in this comment.

For some reason there is no crash trace in your logs, so a possible reason might be that mysqld is killed by the kernel because of Out Of Memory conditions. Check the output of dmesg to see if anything appears. If it is the case try reducing memory usage of mariadb by lowering innodb buffer pool size and key buffer size.

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