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In the operations history of my compute engine project, my machines all have an operation listed as "Automatically migrate an instance (compute.instances.automaticRestart)". They are all on the same zone, using the same debian template.
I suppose that their was some maintenance on the plateform, which is fine for me if the OS doesn't reboot.
Unfortunately two machines suffered a reboot. The operations history listed the operation as "compute.instances.hostError an instance" (compute.instances.hostError). In addition Syslog doesn't suggest a clean shutdown.
Is there anything I should/can do to prevent such problem?
edit : We are europe-west1-b and all servers have the setting : On host maintenance to Migrate VM instance
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A compute instance is a fully managed cloud-based workstation optimized for your machine learning development environment.
An Amazon EC2 instance is a virtual server in Amazon's Elastic Compute Cloud (EC2) for running applications on the Amazon Web Services (AWS) infrastructure.
To stop a VM, use the Google Cloud console, the gcloud CLI, or the Compute Engine API. In the Google Cloud console, go to the VM instances page. Select one or more VMs that you want to stop. Click Stop.
Doesn't look like this was ever answered.
compute.instances.hostError means there was a hardware or software failure on the physical machine that was hosting your VM.
The FAQ has a description -- https://cloud.google.com/compute/docs/faq#hosterror
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