General SQL Error

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Problem

I receive one of the following errors when I attempt to view a build:

1	PDOException: SQLSTATE[HY000] [2002] No such file or directory in lock_may_be_available().

Somtimes, especially on Drupal builds, you will get what is affectionately called the “White Screen of Death (WSOD)” - or "The website encountered an unexpected error. Try again later." message. You may also get a seemingly random message about port connection failures.

This typically means the web server on your build has started faster than the database. While we’re working to mitigate these issues and it is a known issue, the root cause is usually a large or complex database bootstrap or cache warming on databases that have had their caches rebuilt as part of the build process. All Drupal sites have slow cache warming issues absent varnish or content delivery networks - something that Probo.CI does not leverage purposefully.

Solution

This typically resolves after a few moments but in rare situations with large databases, it can take 10-15 seconds. Try re-loading the page after several seconds to get the build going. Again, this usually happens on a first page load and subsequent pages are faster and do not time out.

This is an issue we’re working to alleviate and if the problem continues, please reach out to our Support Team for additiional assistance.