I failed to start my instance (through the web browser), it gave me the error:
\"The zone \'projects/XXXXX/zones/europe-west4-b\' does not have enoug
First of all our apologies that you’re experiencing this issue and great to hear that this issue is being resolved for you.
Our goal is to make sure that there are available resources in all zones. This type of issue is rare. When a situation like this occurs, or is about to occur, our team is notified immediately and the issue is investigated.
We recommend deploying and balancing your workload across multiple zones or regions to reduce the likelihood of an outage. Please review our documentation which outlines how to build resilient and scalable architectures on Google Cloud Platform. As you have noticed that trying again in the next few hours fixed your issue, as this is a transient error. It should not last long. Since our system is dynamic and always expanding, in this type of situation I would recommend you to create your instance in a different zone or try later which you have already seen in the error message.
Additionally, I'll also recommend reviewing this link that recommends distributing your instances across zones to increase availability. You can also review this other link, where you will find some best practices for designing robust systems on GCE (Google Compute Engine).