Project structure

All Magento Commerce Cloud projects include essential files for credentials and application configuration:

File	Description
`/.magento/routes.yaml`	Configuration file that redirects `www` to the naked domain and `php` application to serve HTTP. See Configure environments.
`/.magento/services.yaml`	Configuration file that defines a MySQL instance, Redis, and ElasticSearch. See Configure environments.
`/app`	The `code` folder is used for custom modules. The `design` folder is used for custom themes. See Install a theme. The `etc` folder contains configuration files for Magento.
`/m2-hotfixes`	Used for custom patches.
`.gitignore`	Specify which files and directories to ignore. See `.gitignore` reference.
`.magento.app.yaml`	Configuration file that defines the properties to build your application. See Configure environments.
`.magento.env.yaml`	Configuration file that defines actions for the build, deploy, and post-deploy phases. The ece-tools package includes a sample of this file with detailed descriptions for the available variables. See Configure environments.
`composer.json`	Fetches the Magento Enterprise Edition and the necessary configuration scripts to prepare your application. See Prepare your Magento install.
`composer.lock`	Stores version dependencies for every package.
`magento-vars.php`	A file used to define multiple stores and sites using Magento variables.

When you push your local environment to the remote server, our deploy script uses the values defined by configuration files in the .magento directory, then the script deletes the directory and its contents. Your local development environment is not affected.

Ignoring files

We include a base .gitignore file with the Magento Commerce Cloud project repository. See .gitignore file. You can add an ignored file when staging a commit by using the -f option:

git add <path/filename> -f

Magento application root directory

The Magento application root directory is located in different locations depending on the environment.

For Starter:

Integration environment—the Magento application is located in the /app directory.
Production environment—the Magento application is located in the /<project code> directory.

For Pro:

Integration environment—the Magento application is located in the /app directory.
Staging environment—the Magento application is located in the /<project code>_stg directory.
Production environment—the Magento application is located in the ` /` directory.

Writable directories

In Integration, Staging, and Production, only the following directories are writable due to security reasons:

var
pub/static
pub/media
app/etc
/tmp

In Production, each node in the three-node cluster has a /tmp directory that is not shared with the other nodes.

Logs

The /var/log directory contains logs for each environment. You can access that directory by opening an SSH tunnel to the environment using the magento-cloud environment:ssh -e <environment id> command.

For Pro, the deployment log for Staging and Production is located in /var/log/platform/<project ID>.

Magento logs are located in the <magento root dir>/var/log directory.

Build logs

After pushing to your environment, you can see the results of the both hooks. Logs from the build hook are redirected to the output stream of git push, so you can observe them in the terminal or capture them (along with error messages) with git push > build.log 2>&1.

Deploy logs

You can review these logs via SSH into the environment. Change to the directories listed below to review the logs.

Logs from the deploy hook are located on the server in the following locations:

Integration: /var/log/deploy.log
Staging: /var/log/platform/<project ID>/deploy.log
Production: /var/log/platform/{1|2|3}.<project ID>/deploy.log

The value of <project ID> depends on the project ID and whether the environment is Staging or Production. For example, with a project ID of yw1unoukjcawe, the Staging environment user is yw1unoukjcawe_stg and the Production environment user is yw1unoukjcawe.

For example, on the Staging environment for project yw1unoukjcawe, the deploy log is located at /var/log/platform/yw1unoukjcawe_stg/deploy.log.

For Production, you have a three node structure. Logs are available with specific information for that node. For example, on the Production environment for project yw1unoukjcawe, the deploy log is located at node 1 /var/log/platform/1.yw1unoukjcawe/deploy.log, node 2 /var/log/platform/2.yw1unoukjcawe/deploy.log, and node 3 /var/log/platform/3.yw1unoukjcawe/deploy.log.

Logs for all deployments that have occurred on this environment are appended to this file. Check the timestamps on log entries to verify and locate the logs you want for a specific deployment.

The actual log output is highly verbose to allow troubleshooting. The following is a condensed example:

[2016-10-11 22:15:38] Starting pre-deploy.
...
[2016-10-11 22:15:39] Pre-deploy complete.
[2016-10-11 22:15:42] Start deploy.
[2016-10-11 22:15:42] Preparing environment specific data.
[2016-10-11 22:15:42] Initializing routes.

... more ...

[2016-10-11 22:15:46] Deployment complete.

The deploy log contains start and stop messages for each of the two hooks: Starting pre-deploy, Pre-deploy complete., Start deploy., and Deployment complete..

Application logs

To review other application logs in Staging or Production, you can access and review those logs in /var/log/platform/ProjectID.

For Pro plan Staging, the project ID has _stg at the end. For example, if you receive 500 errors in Staging and want to review the nginx logs, you can SSH to the Staging environment and locate the logs in /var/log/platform/ProjectID_stg.

For Pro plan Production, you have three nodes to check for logs.

Jan 23rd, 2019