An App Engine app is configured using an app.yaml
file, that contains CPU, memory, network and disk resources, scaling, and other
general settings including environment variables.
About app.yaml
files
You can specify the runtime configuration for your PHP app,
including versions and URLs, in the app.yaml
file. This file acts as a deployment descriptor of a specific
service
version.
You must first create the app.yaml
file for the default
service of your app
before you can create and deploy app.yaml
files for additional services.
For PHP version 7.4 and later, you must include the runtime_config
and
operating_system
settings in your app.yaml
to specify an operating system.
You can optionally specify a runtime version by including the runtime_version
setting in your app.yaml
. By default, the latest PHP version is used if the
runtime_version
setting is not specified.
v7.4 and later
runtime: php
env: flex
runtime_config:
operating_system: "ubuntu22"
document_root: .
v7.3 and earlier
app.yaml
file. The following example
demonstrates what a simple PHP app might require in the
flexible environment:
You can specify a unique name for your app.yaml
files, but then you must
specify the file name with the deployment
command
as well. For example, if you name your app.yaml
file service-name-app.yaml
or app.flexible.yaml
, then you must deploy your app using either:
gcloud app deploy service-name-app.yaml
gcloud app deploy app.flexible.yaml
To learn more about structuring multiple services and app.yaml
files in your
app, see Structuring web services.
All configuration elements
For a complete list of all the supported elements in this configuration file,
see the
app.yaml
reference.