Google Cloud is shutting down virtual machines, what the hell?

Question

Google Cloud Platform

There are problems in the operation of VM instances (Compute\Compute Engine\VM instances).
People who have access cannot turn off the machines. The account is in trial mode, for now.
For reasons beyond my control, virtual machines spontaneously shut down. In Google Cloud Monitoring (Google Cloud Monitoring \Infrastructure\Instances\Event Log), state changes are recorded without any logs.
What kind of inexplicable things are going on at Google.
Instance **** changed state running to terminated
In the documentation, everything is as usual incomprehensible, and Google does not answer such questions without paid support
. I dug up only this:
( https://cloud.google.com/compute/docs/troubleshoot...
"Why was my instance terminated with status "Planned termination by system"?
A "Planned termination by system" status means that your instance lived in a zone that was scheduled for maintenance and has been terminated since that maintenance window went into effect."
But the documentation goes on to say that ( https://cloud.google.com/compute/docs/instances/#s...
"By default, Google Compute Engine automatically manages the scheduling decisions for your instances. For example, if your instance is terminated due to a system or hardware failure, Compute Engine automatically restarts that instance. Instance scheduling options let you change this automatic behavior."
Cut from VM settings.
Availability policies
Preemptibility Off (recommended)
Automatic restart On (recommended)
On host maintenance Migrate VM instance (recommended)
If I understand correctly, Google writes: if the server crashes as a result of those works, should it automatically restart it? - but the machines go to bed until you start them manually ..
PS: 100% this is some specific feature of Google like Amazon!

Answer 1

Oops, forgot to post the results. For more than a month now, the machines have been spinning on the prod and do not turn off themselves. This behavior stopped as soon as we started paying money (the trial ended). So, apparently, in order for you not to use the instances to the fullest, Google puts them out at different intervals. I will not confirm, but it seems so.