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Deployment/gcp: use hyperdisk-balanced boot disk for C4 and N4 VMs #968

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Merged
phbnf merged 2 commits into from
Oct 20, 2026
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Deployment/gcp: use hyperdisk-balanced boot disk for C4 and N4 VMs #968

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deployment/gcp: select compatible boot disk type by machine generation
phbnf Oct 20, 2026
7606da4
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phbnf Oct 20, 2026
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5 changes: 5 additions & 0 deletions deployment/modules/gcp/gce/tesseract/main.tf
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Expand Up @@ -198,6 +198,11 @@ resource "google_compute_region_instance_template" "tesseract" {
source_image = data.google_compute_image.cos.self_link
auto_delete = true
boot = true
// Gen 4+ machine series require hyperdisk-balanced; Gen 3 (plus t2a/g2) require pd-balanced;
// Gen 1/2 default to pd-standard.
disk_type = can(regex("(?i)^[a-z]+[4-9][a-z]*-", var.machine_type)) ? "hyperdisk-balanced" : (
can(regex("(?i)^([a-z]+3[a-z]*|t2a|g2)-", var.machine_type)) ? "pd-balanced" : "pd-standard"
)
}

network_interface {
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