I am running NodeJs services on a Google Kubernetes Cluster with Preemptible VM instances.
Before such a VM shuts down a "preemption notice"
is sent. (as described in the docs)
Compute Engine sends a preemption notice to the instance in the form of an ACPI G2 Soft Off signal
I want to know how to handle this signal from inside my NodeJs service?
Is it enough to do it like this?
process.on('SIGTERM', () => {
// do stuff to prepare service for shutdown
});
I'm afraid it's not enough, to make it works you need to add a shutdown script to your container.
In alternative you can install acpid
in your container and listen its events through node-acpi.
Hope this helps.