小编Dav*_*yes的帖子

runtime: nodejs12

instance_class: F2

env_variables:
  HOST: '0.0.0.0'
  NODE_ENV: 'production'
  DATABASE_NAME: 'test'
  DATABASE_USERNAME: '***'
  DATABASE_PASSWORD: '***'
  INSTANCE_CONNECTION_NAME: '***'

beta_settings:
  cloud_sql_instances: '***'

module.exports = ({ env }) => ({
  defaultConnection: 'default',
  connections: {
    default: {
      connector: 'bookshelf',
      settings: {
        client: 'mysql',
        host: `/cloudsql/${env('INSTANCE_CONNECTION_NAME')}`,
        database: env('DATABASE_NAME'),
        username: env('DATABASE_USERNAME'),
        password: env('DATABASE_PASSWORD'),
      },
    },
  },
});