I can't get my Symfony 3 project on Google App Engine Flexible to connect to Google Cloud SQL (MySQL, 2. Generation).
Starting off with these examples
https://github.com/GoogleCloudPlatform/php-docs-samples/tree/master/appengine/flexible/symfony
I created a Google App Engine and a Google Cloud SQL (MySQL, 2. Generation), both at europe-west3. I tested out these examples on my GAE and both run fine.
Then I went on and created a new, very simple Symfony 3.3 project from scratch. After creation (with only the welcome screen and "Your application is now ready. You can start working on it at: /app/") I deployed that to my GAEflex and it works fine.
After that I added one simple entity and an extra controller for that. This works fine, as it should, when starting Googles cloud_sql_proxy and the Symfony built-in webserver "php bin/console server:run". It reads and writes from and to the Cloud SQL, all easy peasy.
But, no matter what I tried I always get a "Connection Refused" on one (or the other, depending of my state of experimentation) of the commands from "symfony-scripts" "post-install-cmd" in my composer.json.
"$ gcloud beta app deploy" output (excerpt)
...
Step #1: Install PHP extensions...
Step #1: Running composer...
Step #1: Loading composer repositories with package information
...
Step #1: [Doctrine\DBAL\Exception\ConnectionException]
Step #1: An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused
Step #1:
Step #1:
Step #1: [Doctrine\DBAL\Driver\PDOException]
Step #1: SQLSTATE[HY000] [2002] Connection refused
Step #1:
Step #1:
Step #1: [PDOException]
Step #1: SQLSTATE[HY000] [2002] Connection refused
...
parameters.yml (excerpt)
parameters:
database_host: 127.0.0.1
database_port: 3306
database_name: gae-test-project
database_user: root
database_password: secretpassword
config.yml (excerpt)
doctrine:
dbal:
driver: pdo_mysql
host: '%database_host%'
port: '%database_port%'
unix_socket: '/cloudsql/restof:europe-west3:connectionname'
dbname: '%database_name%'
user: '%database_user%'
password: '%database_password%'
charset: utf8mb4
default_table_options:
charset: utf8mb4
collate: utf8mb4_unicode_ci
composer.json (excerpt)
"require": {
"php": "^7.1",
"doctrine/doctrine-bundle": "^1.6",
"doctrine/orm": "^2.5",
"incenteev/composer-parameter-handler": "^2.0",
"sensio/distribution-bundle": "^5.0.19",
"sensio/framework-extra-bundle": "^3.0.2",
"sensio/generator-bundle": "^3.0",
"symfony/monolog-bundle": "^3.1.0",
"symfony/polyfill-apcu": "^1.0",
"symfony/swiftmailer-bundle": "^2.3.10",
"symfony/symfony": "3.3.*",
"twig/twig": "^1.0||^2.0"
},
"require-dev": {
"symfony/phpunit-bridge": "^3.0"
},
"scripts": {
"symfony-scripts": [
"Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget"
],
"post-install-cmd": [
"chmod -R ug+w $APP_DIR/var",
"@symfony-scripts"
],
"post-update-cmd": [
"@symfony-scripts"
]
},
app.yml (complete)
service: default
runtime: php
env: flex
runtime_config:
document_root: web
env_variables:
SYMFONY_ENV: prod
MYSQL_USER: root
MYSQL_PASSWORD: secretpassword
MYSQL_DSN: mysql:unix_socket=/cloudsql/restof:europe-west3:connectionname;dbname=gae-test-project
WHITELIST_FUNCTIONS: libxml_disable_entity_loader
#[START cloudsql_settings]
# Use the connection name obtained when configuring your Cloud SQL instance.
beta_settings:
cloud_sql_instances: "restof:europe-west3:connectionname"
#[END cloudsql_settings]
Keep in mind that I added or altered only lines which examples and documentation advised me to.
What Do I do wrong? The examples both work fine, a Symfony project connecting to the DB through a running cloud_sql_proxy works fine, when I try to get doctrine to connect to a CloudSQL from within an GAEflex I get no connection.
Can anyone spot the rookies mistake I might have made? Has anyone had this problem and maybe I forgot one or the other setting with the GAE or CloudSQL? Can anyone point me to a repository of a working Symfony3/Doctrine project that uses GAEFlex and CloudSQL?
I am stuck as I can't find any uptodate documentation about how to get this, rather obvious, combination to run. Any help is greatly appreciated!
Cheers /Carsten
