Shutdown of node : how VM is shutdown ?

[Ernie95]

Hi All,

If we shutdown the pve node which contains containers and VMs, which command is done for shutdown containers and VM ?

Is it shutdown -p now ?

Thanks

 

[Daniel-Doggy]

You can just use the shutdown or reboot command. (Or do it via the GUI in the node summary.)

It does not matter.
Proxmox VE will shutdown all VM and containers as configured in the vm/node settings before it shutdown itself.

 

[fba]

For a VM PVE tries to use the qemu-guest-agent if available to initiate a shutdown. Otherwise it uses an ACPI command. If this doesn't work, the vm is terminated after set timeout, usually 180 seconds.

For LXC it is different, as described here: https://forum.proxmox.com/threads/proxmox-ve-shutdown-does-not-poweroff-machine.118497/post-514629

For LXC containers, shutdown sends a SIGPWR signal to the init process of the container

 

[Ernie95]

Thanks. But I would like to know the command that proxmox send to the container and VM for shutdown the container and VM.

Edit : thanks croit for LXC.

 

[leesteken]

For VMs it depends on whether QEMU Guest Agent setting is enabled. If so then a shutdown signal is send to the Guest Agent inside the VM (which better be running otherwise nothing happens, or the VM is killed hard eventually). Otherwise, an ACPI event is send (and you need to have booted an operating system that responds to them, or the VM is killed hard eventually).