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I've been trying to follow the docs for creating a plugin migration (https://craftcms.com/docs/plugins/migrations) but any attempts to run yiic seem to die with:

CDbConnection failed to open the DB connection.

My Google-fu has not come up with any relevant answers. This is with Craft setup in a Vagrant box, if that makes a difference.

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1 Answer 1

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If you're using 'localhost' for the 'server' in craft/config/db.php, try '127.0.0.1' and visa-versa.

For some reason, some environments are picky about that when connecting to MySQL from the CLI.

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    That was it (sort of). I had multiple environments in the config file, but yiic needed something in the default (*) array.
    – jjmartucci
    Feb 12, 2015 at 2:35
  • Ahh, yeah. There is no domain to match, so it needs something for the default. Nice catch.
    – Brad Bell
    Feb 12, 2015 at 3:02
  • I still have this issue, any other ideas to try? Mar 5, 2015 at 11:18
  • @LukeHolder I'm out of ideas. Those are usually the 2 reasons I've seen it happen.
    – Brad Bell
    Mar 5, 2015 at 16:18
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    It seems you need every config line of your local environment in the default '*' => array(. So don't forget user, password and database...
    – luwes
    Jun 15, 2016 at 8:36

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