Scaling up and down

[Gandalf Corvotempesta]

Is possible to scale, on the fly, an instance from a smaller one to a bigger one and viceversa?

should I reboot or is it transparent ?

[Scott Van Woudenberg]

Hi Gandalf,

If you are OK with a short amount of downtime (around a minute for most Linux VMs, a little longer for Windows VMs), you can stop your VM, change the machine type (presumably to something larger) and start it back up. Here is the docs page with Console, CLI, and API instructions.

If downtime is not OK, things get more complicated because GCE doesn't support "hot resize" for VMs at this time. At a high level, this typically involves snapshotting disks, creating a 2nd VMs, then using DNS or reserved IP tricks to transfer traffic to the new VM.

HTH,

-ScottVW

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Scott Van Woudenberg
Product Manager

Google Compute Engine

On Sat, Dec 3, 2016 at 6:15 AM, Gandalf Corvotempesta <gandalf.co...@gmail.com> wrote:

Is possible to scale, on the fly, an instance from a smaller one to a bigger one and viceversa?

should I reboot or is it transparent ?

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[Gandalf Corvotempesta]

Il giorno sabato 3 dicembre 2016 17:39:09 UTC+1, Scott Van Woudenberg ha scritto:

Hi Gandalf,

If you are OK with a short amount of downtime (around a minute for most Linux VMs, a little longer for Windows VMs), you can stop your VM, change the machine type (presumably to something larger) and start it back up. Here is the docs page with Console, CLI, and API instructions.

Currently, the small downtime for poweroff/poweron is OK.

If downtime is not OK, things get more complicated because GCE doesn't support "hot resize" for VMs at this time. At a high level, this typically involves snapshotting disks, creating a 2nd VMs, then using DNS or reserved IP tricks to transfer traffic to the new VM.

Any ETA for hot resize? 

[Scott Van Woudenberg]

Sorry, no ETA I can share for hot resize. Feel free to add your vote and a comment with use case details to the FR.

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