PROFESSIONAL-CLOUD-DEVELOPER Question #102: Real Exam Question with Answer & Explanation

Question

You are porting an existing Apache/MySQL/PHP application stack from a single machine to Google Kubernetes Engine. You need to determine how to containerize the application. Your approach should follow Google-recommended best practices for availability. What should you do?

Options

• APackage each component in a separate container. Implement readiness and liveness probes.
• BPackage the application in a single container. Use a process management tool to manage each
• CPackage each component in a separate container. Use a script to orchestrate the launch of the
• DPackage the application in a single container. Use a bash script as an entrypoint to the container,

Explanation

https://cloud.google.com/architecture/best-practices-for-building- containers#package_a_single_app_per_container When you start working with containers, it's a common mistake to treat them as virtual machines that can run many different things simultaneously. A container can work this way, but doing so reduces most of the advantages of the container model. For example, take a classic Apache/MySQL/PHP stack: you might be tempted to run all the components in a single container. However, the best practice is to use two or three different containers: one for Apache, one for MySQL, and potentially one for PHP if you are running PHP-FPM.

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