Unable to connect to mysql database with google app engine

Question

I have a Google App Engine application that is running, database is set up and should be working (works with development server), but cannot connect to the database when the app is deployed. I get the following error:

Warning: PDO::__construct(): MySQL server has gone away in /base/data/home/apps/s~helloworldtmb/1.382580389844400668/guestbook.php on line 26 

Warning: PDO::__construct(): Error while reading greeting packet. PID=-1 in /base/data/home/apps/s~helloworldtmb/1.382580389844400668/guestbook.php on line 26 {"outcome":false,"message":"Unable to connect."}

line 26 is

 $db = new pdo('mysql:unix_socket=/cloudsql/<helloworldtmb>:<helloworldtmb:helloo>;dbname=guestbook', 'root', 'p');

helloworldtmb is the application id and helloworldtmb:helloo is the instance name. any ideas?

Answer 1

从项目ID和Cloud SQL实例名称中删除尖括号

Answer 2

You didn't remove the <angle brackets> when filling in the template from the docs you followed . Usually, when programming, when you see angle-brackets with words inside like "your app id" or "your database name", you'll want to interpret the angle-brackets as defining the start and end of where your string should be. So,

/home/<your username>/.ssh/

Would become

/home/anon/.ssh/

And

curl -X <request method> <url>

Would become

curl -X GET http://v1-dot-api.domain.com/threads/list