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First of all this setup is for a proof of concept. The existing disk is ext4 formatted. A total of 4 instance groups created to troubleshoot. The status of 3/4 instance groups has been "Group is Resizing," some for over 4 hours. A minimum-2 and max-5 instances set between all groups for consistency. Only stateless Instance group 3 works, see below for further group details.

Edit: Each instance group is based on an instance template

Stateless Instance group 1:

f1-micro -> Ubuntu 18.04 -> 10GB Boot -> with Startup script -> Attached Existing Disk (20GB) SSD Persistent Disk

Stateless Instance group 2:

f1-micro -> Ubuntu 18.04 -> 10GB Boot -> noStartup script -> Attached Existing Disk (20GB) SSD Persistent Disk

Stateless Instance group 3: Only one that works

f1-micro -> Ubuntu 18.04 -> 10GB Boot -> noStartup script -> No Additional Disks

Stateful Instance group 1:

f1-micro -> Ubuntu 18.04 -> 10GB Boot -> noStartup script -> (Stateful) Existing Disk (20GB) SSD Persistent Disk

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  • What do the logs tell you? – John Hanley Oct 30 '21 at 17:24
  • What errors do you see? We are not able to help you without more detail. – Grzenio Nov 12 '21 at 08:11
  • After looking through this a number of times, it seems to be linked to attaching a (single) disk into multiple VMs. Without using instance groups, the 2nd option was to simply create 2 similar VMs with Zonal persistent Disks (1 R+W) and (1 R) on the 2nd VM, however cloud console will not allow this configuration. – BrandonOS Nov 14 '21 at 14:00

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