The server quit without updating pid file
It's confused into thinkig it should be referring to a PID file which didn't exist, and because it's crashed, it's refusing to restart. Ensure that /etc/contains: And restart the server as this will overstep the problem above, and also recover the databases; error recovery levels of 1 or 2 are likely to let you recover (almost) everything we're told, and I have the previous good backup anyway, so I can restore if I need to.And it's not got any process to tidy us if I try to run server stop scripts. Then stop the server once it's forced the recovery, remove the innodb_force_recovery assignment, and restart it. I'm monitoring carefully, and posting this to my blog partly as a test and partly in the hope it may provide a helpful clue to others in the future.
Several referred to "Google Hell" on this subject, so let me add my own 2 cents worth in case you've arrived here from Google Hell!
It appears that what's happened is that the My SQL daemon has stopped catastrophically for some reason.
Answers that don't include explanations may be removed.
For conventional installations, without brew, like mine, the solutions above doesn't worked.
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Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price. - (2010-10-23)  What Linux run level am I in?- (2009-05-15)  Using the internet to remotely check for power failure at home (PHP) - (2009-04-29)  daemons - what is running on my Linux server?Inno DB: The error means mysqld does not have the access rights to Inno DB: the directory.Inno DB: File name ./ibdata1 Inno DB: File operation call: 'open'. 120314 mysqld_safe mysqld from pid file /usr/local/var/mysql/janmoesen.ended November, 2014: If you're getting this error on My SQL 5.6.x on Mac OS X Mavericks or Yosemite and want to use My SQL with PHP locally (/tmp/is where PHP PDO expects to find the sock file), here is what fixed it for me: 1) Uncomment the default homebrew config file lines and edit as below Network as the unique id for your computer on the network.Run below command [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/user=mysql # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 [mysqld_safe] log-error=/var/log/pid-file=/var/run/mysqld/), that it is the actual one that mysql is using when it runs, and that it has the correct configuration for the installation you created.